About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Thermo-Mechanical Processing of Refractory Alloys
|
| Presentation Title |
Phase Field Modeling of {110} and {112} Slip in W-Re Alloys |
| Author(s) |
Patrick McNutt, Pulkit Garg, Justin Mayer, Tresa Pollock, Irene Beyerlein |
| On-Site Speaker (Planned) |
Patrick McNutt |
| Abstract Scope |
Tungsten (W) is a bcc metal known for its high-temperature strength and melting point, but its limited ductility above room temperature restricts its formability and its range of applications. Alloying with Rhenium (Re) improves ductility, although the underlying mechanisms remain debated. Two proposed factors are (i) solid solution softening, which enhances screw dislocation mobility, and (ii) a shift in slip activity from predominantly {110} slip to a combination with {112} slip. This talk explores these mechanisms in W-Re alloys using the mesoscale Phase Field Dislocation Dynamics (PFDD) model. PFDD examines dislocation core structures and Peierls stresses as a function of Re content and temperature and is advanced to simulate both {110} and {112} slip. This extension enables study of dislocation behavior in W-Re alloys across multiple slip planes and over extended time and length scales, offering guidance for alloy and processing design aimed at improving ductility in refractory metals. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Mechanical Properties, Computational Materials Science & Engineering |