About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Accelerated Discovery and Qualification of Nuclear Materials for Energy Applications
|
Presentation Title |
Proton Irradiation Induced Microstructural Evolution in Compositionally Graded Type 316L Stainless Steel |
Author(s) |
Xiang Liu, Jingfan Yang, Miao Song, Xiaoyuan Lou, Yongfeng Zhang, Lingfeng He, Daniel Schwen |
On-Site Speaker (Planned) |
Xiang Liu |
Abstract Scope |
Hf was introduced into type 316L as a minor element that can potentially mitigate materials degradation due to radiation and/or corrosion. Compositionally graded type 316L stainless steel was fabricated through additive manufacturing. The specimen has 6 different levels of Hf concentration (0, 0.2 wt.%, 0.4 wt.%, 0.6 wt.%, 0.8 wt.%, and 1.0 wt.%) to demonstrate the viability of accelerated irradiation testing of gradient alloys. In this study, the graded specimen was proton irradiated up to 2.5 dpa at 360 ºC. The microstructural evolution behavior at different regions in the gradient sample was investigated using transmission electron microscopy and atom probe tomography techniques. Radiation-induced dislocation loops, voids, and segregation behavior in six different regions were compared to understand the effects of Hf concentration and grain size on the radiation resistance. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Characterization, Nuclear Materials |