About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Grain Boundaries, Interfaces, and Surfaces: Fundamental Structure-Property-Performance Relationships
|
| Presentation Title |
An analysis of intergranular fracture in binary refractory alloys and the influence of segregation |
| Author(s) |
Samuel Wagers, Adib Samin |
| On-Site Speaker (Planned) |
Samuel Wagers |
| Abstract Scope |
Refractory alloys are increasingly studied for high temperature applications due to their promising properties. In this work, we report on utilizing atomistic simulations to explore the mechanical performance of four binary refractory alloys W-M (M = V, Mo, Ta, Re) and their dependence on crystallographic orientation, composition, and grain boundary (GB) structure, focusing on six distinct low-sigma grain boundary structures. The tendency toward segregation of each metal is monitored and a local phase diagram is constructed by monitoring segregation as a function of temperature. The effects of segregation, orientations, and grain boundary structure on crack propagation are investigated and compared to single crystal simulations. |