About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
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Symposium
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Heterostructured and Gradient Materials (HGM IV): Tailoring Heterogeneity for Superior Properties
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Presentation Title |
Work Hardening of Gradient FeCrAl Alloy: An In- situ Micropillar Compression Study |
Author(s) |
Tianyi Sun, Zhongxia Shang, Jaehun Cho, Jie Ding, Yifan Zhang, Tongjun Niu, Bo Yang, Dongyue Xie, Jian Wang, Haiyan Wang, Xinghang Zhang |
On-Site Speaker (Planned) |
Tianyi Sun |
Abstract Scope |
FeCrAl alloy is a promising cladding material for next generation nuclear reactor as it has excellent high temperature oxidation resistance necessary for accident scenarios. In this study, a model FeCrAl alloy, C35M, was processed by surface mechanical grinding treatment. Microscopy studies show the formation of gradient microstructures, and the outermost layer contains nanolaminates with less than 100 nm in thickness. In situ micropillar compression studies were performed at various treated regions and showed the treated FeCrAl alloy has good work hardening ability. Furthermore, the work hardening ability appears to be grain size dependent. A modified Kocks-Mecking model was utilized to explain the grain size-dependent work hardening behavior. This study sheds lights on the design of gradient steels with high-strength and good work hardening ability for future nuclear reactor applications. |
Proceedings Inclusion? |
Planned: |