About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanics at the Extremes: Bridging Length-Scales From Nanoscale to Bulk
|
| Presentation Title |
Multiscale Modeling of Mechanical Behavior in Refractory Alloys |
| Author(s) |
Christian Robinette, Mark Mysonhimer, Adib Samin |
| On-Site Speaker (Planned) |
Adib Samin |
| Abstract Scope |
Refractory alloys exhibit favorable mechanical properties and are candidate structural materials for operation in the extreme environments of aerospace industries and nuclear reactors including high temperatures and large stresses. However, the quantitative contribution of microstructure to the strength and deformation mechanisms remains challenging. It is known that the local atomic environment surrounding defects in the material can be significantly different from the bulk and this can lead to unique behavior. In this work, we seek to examine the effects of alloying and segregation on the deformation mechanisms using atomistic simulations. The parameterized mobility law then provides input to a discrete dislocation dynamics simulations. This then provides the hardening parameters for a crystal plasticity model. This integrated computational framework will help elucidate the stress strain behavior in these refractory alloys and provide insight into the physical mechanisms involved. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Mechanical Properties, High-Temperature Materials |