About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Accelerated Discovery and Qualification of Nuclear Materials for Energy Applications
|
Presentation Title |
A Superb Void Swelling Resistant Type 316L Stainless Steel Developed by Additive Manufacturing Enabled High Throughput Microalloying |
Author(s) |
Miao Song, Jingfan Yang, Xiang Liu, Xiaoyuan Lou, Yongfeng Zhang, Lingfeng He, Daniel Schwen |
On-Site Speaker (Planned) |
Miao Song |
Abstract Scope |
Additive manufacturing (AM) has drawn increasing attention in the nuclear industry. However, data are still limited relevant to radiation damage in AM alloys. Previous results indicate that the void swelling resistance of AM 316L stainless steel (SS) was inferior compared to hot-isotropic pressing counterparts in high-temperature self-ion irradiation. Here, we show that the swelling resistance of AM alloys can be significantly improved by microalloying. Gradient 316L SS with 5 different Hf concentrations was printed in a small volume and then irradiated with 5 MeV Fe2+ ions under identical conditions to 50 dpa at 500-600℃. Void swelling decreases monotonously as the concentration of Hf increases to 1 wt.% at all three temperatures. With 1wt.% Hf, the void swelling of microalloyed AM 316L was one-two orders of magnitude lower compared to undoped AM 316L. This investigation demonstrates that the AM enabled high throughput microalloying is promising for nuclear materials development. |
Proceedings Inclusion? |
Planned: |