| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Deformation-induced Manipulation of Defect Structures and Hierarchical Microstructures
|
| Presentation Title |
Phase Stability in Alloys during Severe Plastic Deformation in the High Strain Limit |
| Author(s) |
Pascal M. Bellon, Robert Averback, Yinon Ashkhenazy |
| On-Site Speaker (Planned) |
Pascal M. Bellon |
| Abstract Scope |
Mechanical alloying has become a valuable processing scheme, much studied since the seminal work of JS Benjamin over 50 years ago. Yet, no general model describes how alloy phases evolve during severe plastic deformation, whether unique steady states stabilize at high strain, and if so whether it is independent of the initial state of the system. An attractive model for describing such a driven alloy system is the effective temperature model proposed by Martin as it builds an effective potential that acts like a free energy in system driven from equilibrium. In this presentation we use computer simulation and SPD experiments on model alloys to highlight the successes and weakness of this model. We focus particular attention on the use of ternary additions to systematically vary alloy properties such as heat of mixing, shear modulus, and interphase energies. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Phase Transformations, Modeling and Simulation, |