About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Mechanical Behavior of Nuclear Reactor Materials and Components III
|
Presentation Title |
The Origin of Superior IASCC Resistance of Additively Manufactured 316L Stainless Steel after Hot Isostatic Pressing in Oxygenated BWR Water |
Author(s) |
Jingfan Yang, Laura Hawkins, Lingfeng He, Miao Song, Yu Lu, Gary Was, Xiaoyuan Lou |
On-Site Speaker (Planned) |
Jingfan Yang |
Abstract Scope |
Recent report (M. Song, et al. Journal of Nuclear Materials 513, 33-44, 2019) showed additively manufactured (AM) 316L stainless steel (SS) after hot isostatic pressing (HIP) exhibited superior resistance to IASCC in oxygenated BWR water, as compared to 316L stainless steel in other forms. While this result caught attention from both research and regulatory communities, the mechanistic explanation to this unusual IASCC response was still not clear. Extensive investigation has been carried out to reveal the unique radiation-induced microstructural and mechanical changes that might lead to the IASCC immunity in HIP AM316L SS. The overall radiation hardening is not an accurate measure of IASCC susceptibility. A decreased strain localization along grain boundaries, caused by dislocation channel broadening, was identified as the main reason to suppress IASCC susceptibility. The root cause of channel broadening in an irradiated AM 316L SS will be discussed. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Mechanical Properties, Environmental Effects |