Associate Professor and ORNL Senior Research Staff
Dr. Morris earned his bachelor’s degree with distinction in Physics from Colorado State University in 1987, and his Ph.D. in Physics at Cornell University in 1992. He worked at Ames Laboratory and Iowa State University, associated with the Materials & Engineering Physics program, working in simulations of defects in materials, martensitic phase transformations, solidification, and liquid metals and alloys. He is currently joint between Oak Ridge National Laboratory and the University of Tennessee. His primary interest is computational & theoretical materials science, particularly molecular dynamics simulations of materials.
- Crystal nucleation and interfacial free energies.
- Metallic glasses.
- Defect structures & material behavior.
- Ductility of B2 compounds
- Martensitic transformations & shape-memory materials
- Grain boundary structure and behavior
- Large-scale molecular dynamics simulations
Ph.D., Physics, Cornell University: Theoretical modeling and computational simulations of materials at small length scales, including: atomistic studies of defect structure, mechanical properties, phase stability, solid-liquid interfaces, undercooled liquid and glass behavior, and atomic/molecular adsorption.
- Scientific Review Panel, Department of Energy Basic Research for the Hydrogen Fuel Initiative, March 2007.
- Visiting associate professor, CNRS, Ecole des Mines, Nancy Cedex, France (June 2005).
- Scientific Review Panel, DOE INCITE award for large-scale computation (2005).
- Chair, Chemistry and Physics of Materials Committee, TMS Society (2005-present).
- Member, Journal of Phase Equilibria and Diffusion Editorial Committee (2004-present).
- Co-organizer (with R. E. Napolitano) “Frontiers in Solidification Science,” TMS Annual Meeting, 2005.
- Co-organizer (with Mike Manley) “Fundamentals of Shape Memory and Related Transitions,” TMS Annual Meeting, February 2007.
- Co-organizer (with C. Battaille, M. Asta and Y. Wang) “Computational Thermodynamics and Phase Transformations,” TMS Annual Meeting, February 2007
J. J. Hoyt et al., “Crystal-Melt Interfaces and Solidification Morphologies in Metals and Alloys,” MRS Bulletin 29, 935(2005).
J. Wang, S. Yoo, J. Bai, J. R. Morris and X. C. Zeng, “Melting Temperature of Ice Ih calculated from coexisting solid-liquid phases,” J. Chem. Phys. 123, 036101 (2005).
R. S. Aga, J. R. Morris, J. J. Hoyt and M. I. Mendelev, “A quantitative parameter-free prediction of simulated crystal nucleation time,” Phys. Rev. Letters 96, 245701 (2006).
R. L. Davidchack, J. R. Morris and B. B. Laird, “The anisotropic hard sphere crystal-melt interfacial free energy from fluctuations,” J. Chem. Phys. 125, 094710 (2006).
J. R. Morris, F. Jiang, P. Liaw, “A simple model for examining composition effects in eutectic nucleation,” Mater. Trans. (JIM) 48, 1675-1679 (2007).