Sudarsanam Babu
Professor, Materials Science Engineering
130 Edison Joining Technology Ctr
1248 Adams Drive
Columbus, OH 43221
614-247-0001
Research Area:
Computational modeling, Energy applications, Metallurgy, Welding / Joining
Honors
2012
- College of Engineering – Lumley Interdisciplinary Award (May 2012), College of Engineering
- AWS Adams Memorial, American Welding Society
- ASM International Fellow, ASM International
2011
- High Performance Computing Innovation Excellence Award by IDC, IDC
- Co-recipient of AWS Warren Savage Memorial Award (2011)
- William Spraragen Award, William Spraragen Foundation
- William Irrgang Memorial Award, Lincoln Electric Company
2009
- Co-recipient of Mc-Kay Helm Award from American Welding Society
2007
- One the 20 Nominees for TopCat innovation award related to leading atechnology team
2006
- Class of Fellows for the American Welding Society
2005
- Co-recipient of William Spraragen award by the American Welding Society forthe research paper published in the Welding Journal during the 2004 year
2003
- One of the ten excellent reviewers, Board of Governors of Acta Materialia Inc.
- Lidstone Medal 2002 awarded by The Welding Institute and donated by ESABUK
2002
- 3rd Place in in International Metallographic Contest, “Nonequilibrium solidification in Fe-C-Al-Mn steel welds,�
- 2nd Place in International Metallographic Contest, “Modification of Dendriticmicrostructures in a nickel base superalloy weld,�
- Honorable mention, International Metallographic Contest on color metallography
- Co-recipient of Mc-Kay Helm Award from American Welding Society
- Co-recipient of AWS-W. F. Savage Award for the paper which was judged the greatest contribution to the welding metallurgy published in the welding journal
2001
- Inclusion formation inself shielded flux-cored arc welds, McKay-Heml award from American Welding Society
- Warren F. Savage memorial award, American Welding Society
2000
- UT-Battelle Significant Research & Development Accomplishment Award
1998
- Professor Masubuchi / MIT Award from American Welding Society for advancing science and technology of materials joining through research anddevelopment
- Co-recipient of Warren F. Savage Memorial Award for the paper which was judged the greatest contribution to the welding metallurgy published in the welding journal
1997
- ASM-IIM India Visiting Lecture Award
- Warren F. Savage memorial award, American Welding Society
1991
- Pfeil Medal for the research paper of in physical metallurgy by the Institute of Metals, London, UK
1990
- Pfeil Medal for the research paper of in physical metallurgy, Institute of Metals, London, UK
1988
- Certificate of academic distinction (Sudarshan Bhat Memorial award) for the bestacademic record during the Master of Technology degree at IIT Madras, INDIA
- Cambridge Commonwealth Trust–India Scholarship for doctoral study and Overseas Research Student award (ORS) for the doctoral study in the United Kingdom, Council of Vice Chancellors and Principals of the Universities in the UK
1987
- Special scholarship by KCP Industries for the best academic achievement
1986
- Best project award during Bachelor of Engineering degree, sanctioned by the Director of Technical Education, Madras, INDIA
- Academic proficiency award during the Bachelor of Engineering degree
Chapters in Books
2012
- "Application of synchrotron and neutron scattering techniques for tracking phase transformations in steels" In steels, modelling and advanced analytical techniques. Edited by Pereloma and Edmonds. LONDON: WOODHEAD PUBLISHING. 2012.
2011
- "Introduction to Integrated Weld Modeling" In ASM HANDBOOK - VOL 22B. Edited by D. U. Furrer and S. L. Semiatin. MATERIALS PARK, OHIO: ASM INTERNATIONAL. 2011.
2007
- "Classification and mechanisms of steel transformation" In Steel Heat Treatment Handbook, Second Edition - 2 Volume Set. Edited by G. E. Totten. New York: Taylor & Francis. 2007.
2000
- "Microstructure modeling of heat-affected-zone and Fusion zone in welds" In McGraw Hill Encyclopedia of Science and Technology. New York: McGrawhill. 2000.
Edited Books
2011
- ASM Handbook, Vol. 6A. MATERIALS PARK, OHIO: ASM INTERNATIONAL. 2011.
2010
- In-situ Studies with Photons, Neutrons, and Electrons Scattering. Berlin: Springer-Verlag Berlin Heidelberg, Germany. 2010.
Journal Articles
2012
- "Continuous Cooling Transformation Behavior in the CGHAZ of Naval Steels." WELDING JOURNAL 91 3 67S-75S
- "Thermal Transients During Processing of 3003 Al-H18 Multilayer Build by Very High-Power Ultrasonic Additive Manufacturing." METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE 43 1 133-144
- "Optimizing Ultrasonic Additive Manufactured Al 3003 Properties With Statistical Modeling." JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY-TRANSACTIONS OF THE ASME 134 1
- "In-Situ Observations of Martensitic Transformation in Blast-Resistant Steel." METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE 43A 5 1538-1546
- "Comment on 'Development of rapid heating and cooling ( flash processing) process to produce advanced high strength steel microstructures' by Lolla et al., with a response from the authors Response." MATERIALS SCIENCE AND TECHNOLOGY 28 1 126-127
2011
- "Transient thermal response in ultrasonic additive manufacturing of aluminum 3003." RAPID PROTOTYPING JOURNAL 17 5 369-379
- "Collision Welding of Sheet Metals: A Practical and 'Green' Technology." WELDING JOURNAL 90 5 46-51
- "Application of high velocity impact welding at varied different length scales." JOURNAL OF MATERIALS PROCESSING TECHNOLOGY 211 5 944-952
- "Strength Recovery in a High-Strength Steel During Multiple Weld Thermal Simulations." METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE 42A 12 3669-3679
- "Multiscale characterisation of weldments." SCIENCE AND TECHNOLOGY OF WELDING AND JOINING 16 1 3-11
- "Advanced characterisation techniques to understand welded structures." SCIENCE AND TECHNOLOGY OF WELDING AND JOINING 16 1 1-2
- "Thermal transients during processing of materials by very high power ultrasonic additive manufacturing." JOURNAL OF MATERIALS PROCESSING TECHNOLOGY 211 10 1650-1657
- "Characterization of microstructural strengthening in the heat-affected-zone of a blast-resistant naval steel (vol 58, pg 5596, 2010)." ACTA MATERIALIA 59 6 2564-2564
- "Quantitative Evaluation of Bulk and Interface Microstructures in Al-3003 Alloy Builds Made by Very High Power Ultrasonic Additive Manufacturing." METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE 42A 13 4045-4055
- "Effect of grain size refinement and precipitation reactions on strengthening in friction stir processed Al-Cu alloys." SCRIPTA MATERIALIA 65 12 1057-1060
- "Thermal transients during processing of materials by very high power ultrasonic additive manufacturing." Journal of Materials Processing and Technology 211 1650-1657
- "Multiscale characterization of weldments." Science and Technology of Welding and Joining 16 3-11
- "Collision Welding of Sheet Metals: A Practical and Green Technology." Welding Journal 90 5 49-51
- "In pursuit of optimum welding system design for steels." Science and Technology of Welding and Joining 16 306-312
- "Ex-situ and In-situ Techniques for Visualization of Weld Microstructure." Journal of the Japan Welding Society 80 1 64-69
- "Neutron depth profiling technique for studying aging in Li-ion batteries." Electrochimica Acta 56 4735-4743
- "Development of rapid heating and cooling (flash processing) process to produce advanced high strength steel microstructures." MATERIALS SCIENCE AND TECHNOLOGY 27 5 863-875
- "Welding-Induced Microstructure Evolution of a Cu-Bearing High-Strength Blast-Resistant Steel." METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE 42A 13 4015-4031
- "Local electronic structure of LiFePO4 nanoparticles in aged Li-ion batteries." ACTA MATERIALIA 59 18 6917-6926
- "Surface potential measurement of aged Li-ion batteries using Kelvin probe microscopy." JOURNAL OF POWER SOURCES 196 3 1508-1512
- "Neutron depth profiling technique for studying aging in Li-ion batteries." ELECTROCHIMICA ACTA 56 13 4735-4743
- "In pursuit of optimum welding system design for steels." SCIENCE AND TECHNOLOGY OF WELDING AND JOINING 16 4 306-312
2010
- "How can Computational Weld Mechanics Help Industry." Welding Journal 89 40-45
- "Bonding Characteristics during Very High Power Ultrasonic Additive Manufacturing of Copper." Scripta Materialia 62 560-563
- "Microstructural characterization of binding interfaces in Aluminum 3003 Blocks Fabricated by Ultrasonic Additive Manufacturing." Welding Journal 89 5 105s-115s
- "Effect of Continuous Cooling Transformation Variations on Numerical Calculation of Welding-Induced Residual Stresses." WELDING JOURNAL 89 7 151S-160S
- "Characterization of interfacial microstructures in 3003 aluminum alloy blocks fabricated by ultrasonic additive manufacturing." ACTA MATERIALIA 58 13 4305-4315
- "Tool Degradation Characterization in the Friction Stir Welding of Hard Metals." WELDING JOURNAL 89 12 256S-261S
- "AN INTEGRATED MODEL TO SIMULATE LASER CLADDING MANUFACTURING PROCESS FOR ENGINE REPAIR APPLICATIONS." WELDING IN THE WORLD 54 9-10 R298-R307
- "Characterization of microstructural strengthening in the heat-affected zone of a blast-resistant naval steel." ACTA MATERIALIA 58 17 5596-5609
- "Effect of magnetic stirring on grain structure refinement: Part 2: Nickel alloy weld overlays." Science and Technology of Welding and Joining 15 7 583-589
- "Effect of magnetic stirring on grain structure refinement: Part 1: autogenous nickel alloy welds." Science and Technology of Welding and Joining 15 5 400-406
- "Surface Potential Measurement of aged Li-ion batteries using Kelvin probe microscopy." J. Power Sources doi:10.1016/j.jpowsour
- "Effect of Continuous Cooling Transformation Variations on Numerical Calculation of Welding Induced Residual Stresses." Welding Journal 89 7 151s-160s
- "A New methodfor the design of welding consumables." Welding Journal 89 10 201s-209s
- "Interfacial ultrafine grained structures onaluminum alloy 6061 joint and copper alloy 110 joint fabricated by magnetic pulse welding." Journal of Materials Science 45 17 4645-4651
- "Application of High Velocity Impact Welding at Varied Different Length Scales." J. Mater. Process. Tech
- "An integrated model to simulate laser cladding manufacturing process for engine repair applications." Welding in the World 54 R298-R307
- "Tool degradation characterization in the friction stir welding of hard metals." Welding Journal 89 256s-261s
- "Thermal diffusivity study of aged Li-ion batteries using Flash Method." Journalof Power Sources 195 872-876
- "Characterization of Interfacial Microstructures in 3003 aluminum alloys blocks fabricated by ultrasonic additive manufacturing." Acta Materialia 58 13 4305-4315
2009
- "Scanning spreading resistance characterization of aged Li-ion Batteries using Atomic force Microscopy." Scripta Materialia 60 933-936
- "Development of Rapid Heating and Cooling (Flash Processing) process to produce Advanced High Strength Steel Microstructures." Materials Science and Technology
- "Thermodynamic and Kinetics Models for Describing Microstructure Evolution during Joining of Advanced Materials." International Materials Reviews 54 333-367
- "Scanning spreading resistance characterization of aged Li-ion batteries using atomic force microscopy." SCRIPTA MATERIALIA 60 11 933-936
2008
- "Microstructure characterization of magnetic-pulse welded AA 6061-T6 by electron backscattered diffraction." Science and Technology of Welding and Joining 13 467-471
- "An Integrated Computational Model to Predict the Mechanical Behavior of Spot Weld." Science and Technology of Welding and Joining 13 232-239
- "Effect of GMAW Process and Material Conditions on DP 780 and TRIP 780 Welds." Welding Journal 87 135-149
- "Redistribution of alloying elements during tempering of a nanocrystalline steel." Acta Materialia 56 188-199
- "Synchrotron X-ray studies of austenite and bainitic ferrite." PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES 464 2092 1009-1027
2007
- "Optimization of Weld Conditions and Alloy Compositions for Welding of Single-Crystal Nickel-Based Superalloys." Materials Science Forum 539-543 3082-3087
- "Atomic scale observations of bainite transformation in a high carbon high silicon steel." Acta Materialia 55 1 381-390
- "Stability of !’ precipitates in a PWA1480 alloy." Intermetallics 15 757-766
2006
- "Reactive gas shielding during laser surface alloying for production of hard coatings." Surface Coating and Technology 200 8 2663-2671
- "Microstructural effects on the spring back of advanced high-strength steel." Metall. Materials Transactions A 37A 11 3221-3231
2005
- "In-situ observations of oxidation and phase stability in cast nickel base intermetallic alloys." Metal. Mater. Trans. A 37A 195-205
- "Effect of 30 tesla magnetic field on phase transformations in a bainitic high-strength steel." Scripta Materialia 52 461-466
- "Fusion and Friction Stir Welding of Aluminum Metal Matrix Composites." Metal. Mater. Trans. A. 36A 3237-3247
- "In-situ Observations of Lattice Parameter Fluctuations in Austenite and Transformation to Bainite”." Metal. Mater. Trans. A 36A 3281-3289
- "Low Temperature Relaxation of Residual Stress in Ti-6Al-4V." Scripta Materialia 52 1051-1056
- "“In-situ observations of lattice expansion and transformation rates of ! and " phases in Ti-6Al-4V." Materials Science and Engineering A 391 1-2 104-113
- "Friction skew-stir welding of lap joints in 5083-O aluminum." Science and Technology of Welding and Joining 10 268-280
- "Effect of 30 T magnetic field on transfomations in a novel bainitic steel." SCRIPTA MATERIALIA 52 6 461-466
2004
- "In-situ Xray diffraction Observations of Austenite, Bainite and Martensite formation during arc welding of 1045 steel." welding Journal 83 244s-253s
- "The Mechanism of acicular ferrite in weld deposits." Current Opinions in Solid State and Materials Science 8 3-4 267-278
- "Identification of the partitioning characteristics of ruthenium in single crystal superalloys with atom probe tomography." Scripta Materialia 51 327-331
- "Observations of ferrite/austenite transformation in the heat-affected zone of 2205 duplex stainless steel spot welds using time-resolved X-ray diffraction." Materials Science and Engineering A374 307-321
- "Phase Transformation Dynamics during welding of Ti-6Al-4V." J. App. Physics 95 8327-8339
- "Stay grain formation, thermomechanical stress and solidification cracking in single crystal nickel base superalloy welds." Science and Technology of Welding and Joining 9 472-482
- "Three-Dimensional Atom Probe Analysis of Carbon Distribution in Low-Temperature Bainite." Scripta Materialia 50 1277-1281
- "Optimization of Shielded Metal Arc Weldmetal for charpy toughness." Welding Journal 83 267s-276s
- "Evolution of dislocation structure in the HAZ of a nickel based single crystal." J. App. Physics 96 3673-3679
- "Joining of nickel basesuperalloy single crystals." Science and Technology of Welding and Joining 9 1-12
2003
- "In-situ observations of weld pool solidification using transparent metal analog systems." Journal of Applied Physics 93 8 4885-4895
- "Overview – Welding: Solidification and Microstructure." JOM-J MIN MET MAT 55 14-20
- "Stray grain formation in single crystal Ni-base superalloy welds." Journal of Applied Physics 94 4203-4209
- "Deformation in the heat-affected-zone during spot welding of a nickel-based single crystal." Journal of Applied Physics 94 1 738-742
- "Microstructure development in single crystal welds." THERMEC'2003, PTS 1-5 Materials Science Forum 426 4 4123-4128
- "Science based design of weld metal microstructure." Transactions of Japanese Welding Research Institute 32 97-105
2002
- "Synchrotron radiation analyzes steel welds." Advanced Materials and Processes 160 23-26
- "In-situ observations of nonequilibrium austenite formation during weld solidification of Fe-C-Al-Mn low alloy steel." Journal of Proceedings of Royal Society (Mathematical and PhysicalSciences) A 458 811-821
- "Toward prediction of microstructure evolution during laser surface alloying." Metallurgical and Materials Transactions A 33A 1189-1200
- "Inclusion formation and microstructure evolution inlow alloy steel welds." ISIJ International 42 1344-1353
- "Effect of stress relief temperature and cooling rate on pressure vessel steel welds." Materials Science and Engineering A327 76-79
- "Comparison of phase composition in alloy 718 measured by atom probe tomography and predicted by thermodynamic calculations." Materials Science and Engineering A A327 84-88
- "Time-resolved X-ray diffraction investigation of primary weld solidification in Fe-C-Al-Mn steel welds." Acta Materialia 50 4763-4781
- "Investigation of boron distribution in martensitic 9% Cr creep resistant steel." ISIJ International 42 S62-S66
2001
- "Effect of thermal cycling on friction stir welds of 2195 aluminum alloy." Welding Journal 80 71s-79s
- "Inclusion formation in self shielded flux-cored arc welds." Welding journal 80 98s-105s
- "Recent advances in modeling and characterization of weld microstructures." Science and Technology of Welding and Joining 6 341-346
- "Modeling of resistance spot welds: Process and Performance." Welding in the World 45 18-24
- "In-situ Characterization of g/g´ lattice stability in a nickel base superalloy by neutron diffraction." Metallurgical and Materials Transactions A 32A 1551-1552
- "Solidification and microstructure modeling of welds in aluminum alloys 5754 and 6111." Science and Technology of Welding and Joining 6 31-40
- "Modeling microstructure evolution in self-shielded flux cored arc welds." Welding journal 80 91s-97s
- "An empirical model of the effects of pressure and temperature on the electrical contact resistance of metals." Science and Technology of Welding and Joining 6 126-132
- "Characterization of the microstructure evolution in a nickel base superalloy during continuous cooling." Acta Materialia 49 4149-4160
2000
- "Modeling of Inclusion Growth and Dissolution in the Weld Pool." Metallurgical Transactions B. 31B 161-169
- "Atom Probe Field Ion Microscopy Investigation of Boron Containing Martensitic 9% Chromium Steel." Metallurgical and Materials Transactions A 31A 975-984
- "Application of atom probe microanalysis for understanding microstructure evolution in nickel base superalloy welds." Microscopy and Microanalysis 6 350-351
1999
- "Intragranular precipitation in Alloy 718." Materials Science and Engineering A A270 14-18
- "A model for inclusion formation in low alloy steel welds." Science and Technology of Welding and Joining 4 276-284
- "Effect of high-energy-density welding processes on inclusion and microstructure formation in steel welds." Science and Technology of Welding and Joining 4 63-73
1998
- "Effect of boron on the microstructure of low-carbon steel resistance-seam welds." Welding Journal 77 249s-253s
- "High resolution analysis of elemental partitioning in nickel-base superalloy welds using atom probe field ion microscopy." Microscopy and Microanalysis 4 94-95
1997
- "Welding of Nickel-base Superalloys Single-crystals." Science and Technology of Welding and Joining 2 79-88
- "A new model for prediction of ferrite number of stainless steel welds." Science and Technology of Welding and Joining 2 279-285
- "Weld metal microstructure calculations from fundamentals of transport phenomena in the arc welding of low alloy steels." Welding Journal 76 163s-171s
- "Modeling microstructure development in weld metals." Transactions of the Indian Institute of Metals 50 591-602
1996
- "Calculation of inclusion formation in low alloy steel welds." Materials Science and Engineering, A215 84-91
- "Phase stability and atom probe field ion microscopy of Type 308 CRE stainless steel weld metal." Metall. & Mater. Trans. A. 27A 763-774
- "Atom Probe Field Ion Microscopy Investigation of CMSX-4 Ni-base Superalloy Laser Beam Welds." J. de Physique IV 6 C5-253
- "Microstructural development in PWA1480 electron beam welds - An atom probe field ion microscopy study." Applied Surface Science 94/95 280-287
- "Coarsening of oxide inclusions in low alloy steel welds." Science and Technology of Welding and Joining 1 17-27
- "Trends in Microstructure Modeling in Weld Metals." Trans. JWRI 25 127-143
1995
- "Development of macro – and microstructures of C–Mn low alloy steel welds –Inclusion Formation." Materials Science and Technology 11 186-199
- "Processing of Fe3Al and FeAl alloys by reaction synthesis." Intermetallics 3 467-481
- "Diffusion of carbon in substitutionally alloyed austenite." Journal of Materials Science Letters 14 314-316
- "Stress and the acicular ferrite transformation." Materials Science and Engineering A156 1-9
- "Atom probe field ion microscopy of type 308 CRE stainless steel welds." Applied Surface Science 87/88 207-215
1994
- "Compositional inhomogeneities in sputtered Co–Cr magnetic thin films studied by atom probe filed ion microscopy." Journal of Applied Physics 76 8025-8031
- "APFIM study of the partitioning of substitutional elements during tempering of a low alloy steel martensite." Metall. Trans. A. 25A 499-508
1993
- "Atom probe study of the precipitation process in Al–Cu–Mg–Ag alloy." Acta. Metall. Mater. 41 829-838
- "Atom probe compositional analysis of Co–Cr sputtered magnetic thin films." Appl. Phys. Lett 62 2504-2506
- "APFIM studies on some aluminum alloys." Applied Surface Science 67 361-367
- "APFIM studies on martensite tempering of Fe–C–Si–Mn low alloy steel." Applied Surface Science 67 321-327
- "Atom probe analysis of nanocrystalline Fe–C–Ta sputtered soft magnetic thin film." Applied Surface Science 67 391-397
1992
- "Early stage phase decomposition of Al–7.8 at.% Li alloy studied by APFIM." Acta. Metall. Mater. 40 3027-3034
1991
- "Crystallographic texture and the austenite grain structure of low–alloy steel weld deposits." Journal of Materials Science Letters 10 142-144
- "A direct study of grain boundary allotriomorphic ferrite crystallography." Materials Science and Engineering A142 209-219
- "Mechanism of the transition from bainite to acicular ferrite." Materials Transactions, Japan Institute of Metals, (special issue on Bainite) 32 8 679-688
1990
- "Transition from bainite to acicular ferrite in reheated Fe-Cr-C weld deposits." Materials Science and Technology 6 1005-1020
Papers in Proceedings
2011
- "Investigation of Weld Crack Mitigation Techniques with Advanced Numerical Modeling and Experiment - Summary." 3rd Workshop on Hot Cracking Phenomena Welds 2011.
2010
- "Ex-situ and In-situ Techniques for Comprehensive Visualization of Welds." Proceedings of an International Conference on Visual-JW 2010, JWRI, Osaka University, Osaka 2010.
- "Interfacial ultrafine-grained structures on aluminum alloy 6061 joint and copper alloy 110 joint fabricated by magnetic pulse welding." 6th International Symposium on Ultrafine Grained Materials 2010.
- "Weld metal toughness – Sourcesof Variation." Proceedings of the 8th International Pipeline Conference, IPC 2010 2010.
2009
- "Crack Mitigation in Buttering and Cladding Processes for a Nuclear Application." 8th International Conference on Trends in Welding Research 2009.
- "An Integrated Model to Simulate Laser Cladding Manufacturing Process for Engine Repair Applications." IIW Document 212-1140-09, X11-1974-09, IV-988-09 2009.
- "Experimental Study and Numerical Simulation on Magnetic Pulse Welding for Pre-Flanged AA6061-T6 and Cu101 Sheets." 8th International Conference on Trends in Welding Research 2009.
- "ONLINE SOFTWARE TOOL FOR PREDICTING WELD RESIDUAL STRESS AND DISTORTION." Pressure Vessels and Piping Conference of the American-Society-of-Mechanical-Engineers 2009.
2008
- "Cracking mitigation during buttering and cladding of a low alloy steel pipe." Proceedings of Trends in Welding Research, Pine Mountain, ASM International 2008.
- "Microstructure evolution in structural alloy welds: Role of In-situ Characterization tools and Computational Modeling." Proceedings of IIW International Congress, 2nd Latin American Welding Congress 2008.
- "Elemental partitioning characteristics across transformation interfaces during thermo-mechanical-magnetic processing: challenges and future directions." Proceedings of 155th ISIJ meeting 2008.
- "Computational optimization of weld metal composition for maximizing acicular ferrite." Proceedings of Trends in Welding Research, Pine Mountain, ASM International 2008.
2007
- "Optimization of weld conditions and alloy composition for welding of single-crystal nickel-based superalloys." 5th International Conference on Processing and Manufacturing of Advanced Materials 2007.
- "Stability of gamma ' precipitates in a PWA1480 alloy." 6th International Workshop on Advanced Intermetallic and Metallic Materials 2007.
- "Time resolved X-ray diffraction investigation of austenite and transformation to bainite." Proceedings of 1st international symposium on steel science(IS3 2007), The Iron and Steel Institute of Japan 2007.
2006
- "Development of an Integrated Computational Model to predict the Performance of AHSS spot welds: Methodology and Challenges." Proceedings of Sheet Metal Welding Conferences, Session 8 – Modeling and Control 2006.
- "Microstructural Characteristics and Mechanical Properties of Friction Skew-Stir Welded Lap Joints in 5083-0 Aluminium." 7th International Conference on Trends in Welding Research 2006.
- "Recent Advances in Modeling of Solidification Behavior." 7th International Conference on Trends in Welding Research 2006.
- "Cracking Behavior in Nickel-Based Single Crystal Superalloy Welds." 7th International Conference on Trends in Welding Research 2006.
- "Welding of Single-Crystal Nickel-Based Superalloys: How to Avoid Stray Grains and Why." 7th International Conference on Trends in Welding Research 2006.
- "A Microstructure Model for Laser Processing of Ti-6Al-4V." 7th International Conference on Trends in Welding Research 2006.
- "Direct Observations of Sigma Phase Growth and Dissolution in 2205 Duplex Stainless Steel." 7th International Conference on Trends in Welding Research 2006.
- "Thermomechanical Behavior of Nickel Base Single Crystal Superalloy Towards Understanding of Weld Hot Cracking." 7th International Conference on Trends in Welding Research 2006.
- "Design of Process-Material-Shielding Combinations for Hard Coatings Using Laser Surface Alloying." 7th International Conference on Trends in Welding Research 2006.
2005
- "Cracking behavior in nickel-based single crystal superalloy welds." Proc. of international conference on “Trends in Welding Research� 2005.
- "Welding of Single-crystal Nickel-based superalloys." Mathematical Modeling of Weld Phenomena 7 2005.
- "Low temperature bainite: An analysis at atomic level." Proc. Of International Conference on Solid – Solid Phase Transformations 2005.
- "Direct observations of sigma phase growth and dissolution in 2205 duplex stainless steel." Proc. of international conference on “Trends in Welding Research" 2005.
- "A microstructure model for laser processing of Ti-6Al-4V." Proc. of international conference on “Trends inWelding Research" 2005.
- "Investigation of austenite decomposition in high-carbon high-strength Fe-C-Si-Mn steel under 30 Tesla magnetic field." Proc. Of International Conference on Solid – Solid Phase Transformations 2005.
- "Fine scale precipitation in Haynes 214 alloy." Proc. Of International Conference on Solid – Solid Phase Transformations 2005.
- "Phase selection phenomena during low-alloy steel weld solidification." Proc. of internationalconference on “Trends in Welding Research� 2005.
- "Thermomechanical behavior of nickel based single crystal superalloy – Towards understanding of weld hot cracking." Proc. of international conference on “Trends in Welding Research" 2005.
- "Measurement of phase transformation kinetics during repeated thermal cycling of Ti6Al4V using time resolvedX-ray diffraction technique." Proc. Of International Conference on Solid – SolidPhase Transformations 2005.
- "Design of process material-shielding combinations for hard coatings using laser surface alloying." Proc. of international conference on “Trends in Welding Research" 2005.
- "Application of in-situ diffraction experiments to understand nonequilibrium phase transformations in structural alloys." Invited paper for Proc. Of International Conference on Solid – Solid Phase Transformations 2005.
- "Modeling and characterization of nonequilibrium weld microstructure evolution." Mathematical Modeling of Weld Phenomena 7 2005.
- "In-situ observations of phase transformations in the fusion of Ti-6Al-4V alloy transient welds using synchrotron radiation." Mathematical Modeling of Weld Phenomena 7 2005.
2004
- "Joining of nickel base superalloy single crystals." Conference on Microstructure and Performance of Joints in High Temperature Alloys 2004.
- "The use of reactive gas shielding for production of hard coatings by laser surface alloying (Paper 606)." Proceedings of 23rd International conference on Applications of Lasers and Electro-Optics 2004.
- "Analysis of Stray Grain Formation in Single-Crystal Nickel-Based Superalloy Welds." Superalloys 2004 2004.
- "Atomic Partitioning of Ruthenium in Ni-based Superalloys." Superalloys 2004, Proc.10th International Symposium on Superalloys 2004.
- "“Stray grain formation in nickel based superalloys single crystal weld." Proceedings of the Solidification Processes and Microstructures, A symposium in honor of Prof. W. Kurz 2004.
- "Nonequilibrium phase selection during weld solidification of Fe-C-Mn-Al steels." Proceedings of the Solidification Processes and Microstructures, A symposium in honor of Prof. W. Kurz 2004.
- "Development of advanced coatings for laser modifications through process and materials simulation." 8th International Conference on Numerical Methods in Industrial Forming Processes 2004.
- "A coupled thermal and microstructure model for laser metal deposition of Ti-6Al-4V." Proceedings of the Cost-Affordable Titanium symposium dedicated to Prof. Harvey Flower: Breakthrough Technologies 2004.
- "Modeling Resistance Spot Welding Electrode Life." Proc. Of Sheet Metal Welding Conference XI 2004.
2003
- "Investigation of the Kinetics of the Ferrite/Austenite Phase Transformation in the HAZ of a 2205 Duplex Stainless Steel Weldment." 6th International Trends in Welding Research Conference Proceedings, 15-19 April 2002 2003.
- "Characterization of low temperature ferrite/austenite transformations in the heat-affected zone of 2205 duplex stainless steel arc welds." Proceedings of the Austenite Formation and Decomposition Symposium 2003.
- "Characterization and Prediction of Austenite Formation and Decomposition in Steel Welds." Proceedings of the Austenite Formation and Decomposition Symposium 2003.
- "Nonequilibrium solidification in Fe-C-Al-Mn steel welds." 6th International Trends in Welding Research Conference Proceedings, 15-19 April 2002 2003.
- "Advanced Characterization Techniques for Weld Microstructures." 6th International Trends in Welding Research Conference Proceedings, 15-19 April 2002 2003.
- "A study of the transition kinetics from Para-Equilibrium to Ortho-Equilibrium." Proceedings of the Austenite Formation and Decomposition Symposium 2003.
- "In-situ characterization of austenite to martensite decomposition in 9Cr-1Mo-V steels welds." Proceedings of the Austenite Formation and Decomposition Symposium 2003.
2002
- "Experimental investigation and simulation of nonequilibrium solidification." 6th International Seminar on Numerical Analysis of Weldability 2002.
- "Applications of computational thermodynamics to welding." Symposium on Calphad and Alloy Thermodynamics held at the 2002 TMS Annual Meeting 2002.
- "Effect of stress relief temperature and cooling rate on pressure vessel steel welds." 46th International Field Emission Symposium 2002.
- "Comparison of the phase compositions in Alloy 718 measured by atom probe tomography and predicted by thermodynamic calculations." 46th International Field Emission Symposium 2002.
2001
- "Atomic Level Characterization of Precipitation in Alloy 718." Superalloys 718, 625, 706 and Various Derivatives 2001.
- "Inclusion formation in self-shielded flux cored arc welds." 80th Annual Meeting of the American-Welding-Society 2001.
- "IN-939 based superalloys with improved weldability." Proceedings of BALTICA V 2001.
- "Recent advances in modelling and characterisation of weld microstructures." 5th Ultra-Steel Workshop 2001.
2000
- "Analysis of hard particle retention in laser melt pools." Proceedings of the International Congress on Applications of Lasers and Electro-Optics 2000.
- "Prediction of heat treatment effects using computational thermodynamic and kinetic models." Heat Treating Including Advances in Surface Engineering: An International Symposium in Honor of Professor Tom Bell and Professor Jerome N. Cohen Memorial Symposium on Residual Stresses in the Heat Treatment Industry Proceedings of the 20th Conference 2000.
- "Precipitation of γ' from γ during the weld thermal cycle: Recent results of APFIM characterization and modeling." Proc. Of Advanced Technologies for Superalloy Affordability 2000.
- "Phase composition in Alloy 718: A Comparison between APT/APFI measurements and thermodynamic predictions." Proc. Of Advanced Technologies for Superalloy Affordability 2000.
- "Welding of nickel base superalloy single crystals." proceedings of "Welding and Repair - Technology for power Plants" 2000.
1999
- "An incrementally coupled electrical-thermal-mechanical model for resistance spot welding." Proc. Intl. Conference on Trends in Welding Research 1999.
- "Microstructure development in resistance-spot steel welds." Proc. Intl. Conference on Trends in Welding Research 1999.
- "Effect of fluid flow on inclusion coarsening in low-alloy steels welds." Proceedings on Fluid Flow Phenomena in Metals Processing 1999.
- "Intragranular precipitation in alloy 718." 45th International Field Emission Symposium - Field Emission 98 1999.
- "Characterization and Modeling of Microstructure Development in Nickel-base Superalloy Welds." Proc of second International conference on Joining of Advanced and Specialty Materials 1999.
- "Neural net model for predicting ferrite number in austenitic stainless steel welds." Proc. Intl. Conference on Trends in Welding Research 1999.
- "Effects of interactive particles on steel weldability." Proc. Intl. Conference on Trends in Welding Research 1999.
- "Atom probe field-ion microscopy investigation of Ni-base superalloy welds." Proc. Intl. Conference on Trends in Welding Research 1999.
- "Inclusion formation in low-alloy steel welds." Proc. Intl. Conference on Trends in Welding Research 1999.
- "Thermo-Chemical-Mechanical Effects on Microstructure Development in Low Alloy Steel Welds." Proc. of an International Conference on “Solid to Solid Phase Transformations 99 1999.
1998
- "Modeling of Resistance Spot Welding." Proceedings of Taiwan International Welding Conference ‘98 1998.
- "Integrated thermal microstructuremodel to predict the property gradients in resistance spot steel welds." Proc. of Sheet Metal Welding Conference VIII, Paper #5-2 1998.
1997
- "Weldability and microstructure development in nickel-base superalloys." Proc. Intl. Conference on Numerical Analysis of Weldability - V 1997.
- "Modeling microstructure development in weld metals." International Symposium on Fifty Years of Metallurgy - Retrospect and Prospect 1997.
1996
- "Microstructural development in PWA-1480 electron beam welds - An atom probe field ion microscopy study." 42nd International Field Emission Symposium 1996.
1995
- "Modeling the formation of non-metallic oxide inclusions in low alloy steel fusion welds." Proc. 4th Intl. Conf. on “Trends in Welding Research" 1995.
- "Phase Transformations and Microstructure Development in low alloy steel welds." Proceedings of an International Symposium on Phase Transformations during the Thermal / Mechanical Processing of Steel 1995.
- "Effect of oxide inclusions on the solid state transformations in low alloy steel fusion welds." Proc. of 4th Intl. Conf. on “Trends in Welding Research" 1995.
- "ATOM-PROBE FIELD-ION MICROSCOPY OF TYPE-308 CRE STAINLESS-STEEL WELDS." 41st International Field Emission Symposium (IFES 94) 1995.
- "Microstructure evolution in low alloy steel weld metal from convective heat transfer calculations in three dimensions." Proc. of 4th Intl. Conf. on “Trends in Welding Research" 1995.
- "Towards predicting weld metal microstructure from fundamentals of transport phenomena." Proc. International Conference in Modeling of Casting, Welding and Advanced Solidification Processes VII 1995.
- "Microstructure modeling in weld metal." Proc. International Conference on Numerical Analysis of Weldability IV 1995.
- "Advances in Welding Science and Technology." Proceedings of the International workshop on recent trends in welding 1995.
1994
- "Advances in Welding Science - A Perspective." Proc. of 42nd National Welding Conference, Melbourne, Australia, Vol. 2, Welding Technology Institute of Australia, Silverwater, New South Wales, Australia 1994.
- "The effect of oxide inclusions on kinetics of austenite to ferrite transformation in low alloy steel weld metal." Proc. International Conference on Solid –>Solid phase transformations in inorganic materials 1994.
1993
- "ATOM-PROBE ANALYSIS OF A NANOCRYSTALLINE FE-C-TA SPUTTERED SOFT MAGNETIC THIN-FILM." 39TH INTERNATIONAL FIELD EMISSION SYMP 1993.
- "APFIM STUDIES ON MARTENSITE TEMPERING OF FE-C-SI-MN LOW-ALLOY STEEL." 39TH INTERNATIONAL FIELD EMISSION SYMP 1993.
- "APFIM STUDIES OF SOME ALUMINUM-ALLOYS." 39TH INTERNATIONAL FIELD EMISSION SYMP 1993.
1988
- "Studies on improving aluminum zinc magnesium alloy weld metal properties." international conference on Welding technology in developing countries – presentstatus and future needs, Organized by University of Roorkee, India 1988.
Patents
2006
- Remote supercomputing materials joining modeling system and method. Filed Dec 2006
2002
- Improved Steel Surface Hardness through Laser Deposition Coupled with Active Gas Shielding. Filed Dec 2002