MSE Colloquium: Dallas Trinkle, Deformation in magnesium from first-principles
All dates for this event occur in the past.
264 MacQuigg Labs
105 W. Woodruff Ave.
Columbus, OH 43210
United States
Abstract
Predictive modeling of strength from first-principles electronic structure methods offers great promise to inform Mg alloy design. Simulating the mechanical behavior for new alloys requires an understanding of mechanisms for deformation at atomic-length scales, with accurate chemistry, extended to larger length- and time-scales. Modern computational approaches can now investigate dislocations from first-principles, and compute interactions with solutes across the periodic table. We can predict metallurgical trends with changes in size and chemical misfits, and connect those to predictions of mechanical behavior through predictive models, including solute strengthening and thermally-activated cross-slip. Comparing alkali, alkali earth, and transition metals with rare earth solutes provides new connections between electronic structure and mechanical behavior. Moreover, the computational approach provides a blueprint for attacking new challenges in deformation behavior beyond solute strengthening and softening.
Bio
Dallas Trinkle is an associate professor in Materials Science and Engineering at Univ. Illinois, Urbana-Champaign. He received his B.S. in Physics and Mathematics at Xavier University in 1996 and his Ph.D. in Physics from Ohio State University in 2003. He worked as a graduate research assistant at Los Alamos National Laboratory from 1998 to 2000. Following his time as a National Research Council postdoctoral researcher at the Air Force Research Laboratory, he joined the faculty of the Department of Materials Science and Engineering at Univ. Illinois, Urbana-Champaign in 2006. He was a TMS Young Leader International Scholar in 2008, received the NSF/CAREER award in 2009, the Xerox Award for Faculty Research at Illinois in 2011, and co-chaired the 2011 Physical Metallurgy Gordon Research conference.