| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Deformation and Transitions at Grain Boundaries VII
|
| Presentation Title |
Microstructural Predictions of Thermo-mechanical Fracture of Hydrided HCP Alloys |
| Author(s) |
T. Hassan, I. Mohamed, Mohammed A. Zikry |
| On-Site Speaker (Planned) |
T. Hassan |
| Abstract Scope |
A dislocation-density based multiple slip crystalline plasticity formulation and a new computational fracture approach have been used to investigate and predict thermo-mechanical fracture in hexagonal close packed (h.c.p.) materials with a focus on h.c.p. alloys with hydrides that have different crystalline structures than that of the matrix. This predictive framework has been used to understand and predict the interrelated effects of dislocation-density interactions, generation, and recovery on the competition between intergranular and transgranular crack nucleation and propagation The validated predictions indicate that transgranular fracture is dominated by dislocation-density interactions with hydrides and intergranular fracture is dominated by GB misorientations. The proposed modeling framework can provide guidelines for a fundamental understanding of materials subjected to thermo-mechanical loading conditions, such that failure resistant material systems can be attained. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |