About this Abstract |
| Meeting |
MS&T26: Materials Science & Technology
|
| Symposium
|
Advances in Refractory High Entropy Alloys and Ceramics
|
| Presentation Title |
A Multiscale Modeling Study of the Mechanical Response of W-Mo Alloys |
| Author(s) |
Mark Mysonhimer, Adib Samin |
| On-Site Speaker (Planned) |
Mark Mysonhimer |
| Abstract Scope |
Atomistic models of pure tungsten and W-Mo solid solutions are subjected to controlled deformation at varying stresses and temperatures. The atomistic simulation can extract the dislocation velocity for edge and screw dislocations in WMo. This information is then used to calculate the dislocation mobility. The addition of molybdenum, even in small amounts, alters dislocation mobility and energy storage mechanisms of the metal, leading to measurable deviations from pure tungsten behavior. The goal of this work is to examine edge to screw strengthening mechanisms and create an atomically-informed mesoscale simulations.
After performing the MD analysis, inputs are provided to run a Discrete Dislocation Dynamics (DDD) simulation, which then goes on to produce parameters for hardening laws to be used in continuum crystal plasticity models which are also performed and discussed. |