About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmentally Assisted Cracking: Theory and Practice
|
| Presentation Title |
Synthesis as Environment: Insights into Oxidation and Cracking Through Hot Isostatic Pressing |
| Author(s) |
Janelle P. Wharry, Ronit Roy, Khaled ElToukhy, Zijun Su, Caleb P Massey, David Hoelzer, R. Edwin García, Maria A Okuniewski |
| On-Site Speaker (Planned) |
Janelle P. Wharry |
| Abstract Scope |
This talk will provide insight into oxidation and intergranular cracking of Al-bearing steels using hot isostatic pressing (HIP). FeCrAl and alumina-forming austenitic (AFA) steels are leading candidates for advanced nuclear cladding and structural components, as their Al content provides high temperature oxidation resistance. The nuclear industry has growing interest in synthesizing these alloys by HIP, which offers near-net shape manufacturing amongst other advantages. However, during HIP, imperfect degassing can create retained porosity as metal powders are compacted. HIP temperatures accelerate reaction kinetics between trapped gases and metal powders. Consequently, HIP can serve as a proxy for high temperature oxidation, and the fracture of HIP materials can shed light on intergranular cracking of oxidized materials. This talk will highlight parallels and contrasts between HIP and oxidation microstructures in FeCrAl and AFA steels. Work will reveal new insights into how alloy synthesis can simultaneously be a form of environmental degradation. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Powder Materials, Environmental Effects |