|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Accident Tolerant Fuels for Light Water Reactor
||Thermal Aging Embrittlement in a Friction Stir Processed Al-bearing, High-Cr Stainless Steel
||Anumat Sittiho, Vedavyas Tungala, Aniket Dutt, Peyman Samimi, Somayeh Pasebani, Indrajit Charit, Rajiv S. Mishra
|On-Site Speaker (Planned)
Kanthal APMT, an Al-bearing, high-Cr ferritic stainless steel, has potential as an accident-tolerant cladding material for advanced light water reactors. However, high-Cr ferritic steels suffer from thermal aging embrittlement. In this study, friction stir processing (FSP) was applied to a hot-rolled APMT plate. Isothermal aging of both the parent and the FSPed specimens were carried out at 748 K for 2-1500 hours to study the associated mechanical and microstructural changes due to aging. The microstructural characteristics of APMT steel both before and after thermal aging were examined by different analytical characterization tools including high resolution transmission electron microscopy and atom probe tomography. Mechanical properties of the specimens were evaluated by Vickers microhardness and tensile testing. The response to thermal aging embrittlement effect in the FSPed material is found to be slower than that of the parent material because of the difference in the size and morphology of alpha-prime phases formed.
||Planned: Supplemental Proceedings volume