- Assistant Professor, Materials Science Engineering
1248 Arthur Adams Dr.
EJTC, Room 132
Columbus, OH 43221
Research interests include:
- Welding metallurgy of AHHS steels, stainless steels and Ni-Base alloys
- Materials degradation and cracking phenomena
- Challenges associated with dissimilar metal welding
- Development of weldability testing procedures
- Advanced microstructural characterization of welds
- Microstructures associated with additive manufacturing
- Filler metal development
Weldability is a key factor for manufacturing of advanced materials for structural components in energy production, chemical processing and lightweight vehicles. Advanced materials in such applications have specifically tailored properties that are attained by complex thermo-mechanical processing and carefully controlled alloying additions. Due to metallurgical changes and thermo-mechanical effects that occur during the welding process, weld failures and loss of properties are frequently experienced. This can be highly deleterious to fabrication and service-performance of welded metals and alloy components, limiting the implementation of advanced materials. My research focuses on materials degradation and weld cracking in different advanced material systems. Each of these phenomena is a result of metallurgical as well as thermo-mechanical aspects influenced by material properties, welding processing and structural design. Using a variety of materials characterization and experimental and modeling techniques, my research aims to achieve a fundamental understanding of the metallurgical processes, material properties and failure mechanisms in welds. Current research efforts focus on 1) filler metal development to mitigate cracking in repair and structural welding of nuclear power systems, 2) the effect of interstitials and minor element additions on weld cracking susceptibility, 3) identifying potential weldability issues in structural high entropy alloy development, and 4) liquid metal induced embrittlement in dissimilar welds on advanced high strength steels in automotive industry.
Carolin Fink is an Assistant Professor in the Department of Materials Science and Engineering and the Welding Engineering Program at the Ohio State University. Her research interests include weld cracking and materials degradation phenomena, in particular elevated temperature cracking and liquid metal embrittlement, welding metallurgy and weldability of nickel-base alloys, welding of dissimilar materials and weldability testing. Carolin joined Ohio State in 2015 as a Postdoctoral Researcher in the Welding Engineering Group. In 2016, she was awarded the Henry Granjon Prize of the International Institute of Welding (IIW) in recognition of her Ph.D. research on ductility-dip cracking in nickel-base alloys. Carolin received her Ph.D. in Mechanical Engineering from the Otto-von-Guericke University Magdeburg in Germany. She is also a certified International Welding Engineer (IWE).
- Fink,Carolin; Zinke,Manuela; Juettner,Sven, 2016, "An investigation of ductility-dip cracking in the base metal heat-affected zone of wrought nickel base alloys-part II: correlation of PVR and STF results." WELDING IN THE WORLD 60, no. 5, 951 - 961.
- Fink,Carolin, 2016, "An investigation on ductility-dip cracking in the base metal heat-affected zone of wrought nickel base alloys-part I: metallurgical effects and cracking mechanism." WELDING IN THE WORLD 60, no. 5, 939 - 950.
- Fink,Carolin; Zinke,Manuela, 2013, "Welding of nickel-based alloy 617 using modified dip arc processes." WELDING IN THE WORLD 57, no. 3, 323 - 333.
- Fink,C; Keil,D; Zinke,M, 2012, "EVALUATION OF HOT CRACKING SUSCEPTIBILITY OF NICKEL-BASED ALLOYS BY THE PVR TEST." WELDING IN THE WORLD 56, no. 7-8, 37 - 43.