About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Hume-Rothery Symposium: Interface Structure and Properties: Impact on Microstructure Evolution
|
| Presentation Title |
Atomistic insights into the limits of metal plasticity and metal hardening. |
| Author(s) |
Luis Zepeda-Ruiz |
| On-Site Speaker (Planned) |
Luis Zepeda-Ruiz |
| Abstract Scope |
The strength and plasticity properties of metals are defined by the presence and motion of dislocations. Understanding how they interact when the metal is mechanically deformed is essential to designing and optimizing metallic systems for many applications. Here I present fully dynamic atomistic simulations on sufficiently large samples that are statistically representative of macroscopic crystal plasticity behavior in body- and face-centered-cubic metals. The simulations are fully resolved and accurately capture every possible mechanism of material response, showing every “jiggle and wiggle” of atomic motion. This presentation will focus on the response of the metal when the limits of dislocation-mediated plasticity are exceeded, the state of plastic flow below this limit in which the flow stress and dislocation density remain constant as long as the conditions of straining thereafter remain unchanged, and on the origins of metal hardening at its most fundamental level of atomic motion. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, Modeling and Simulation, Mechanical Properties |