|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Environmentally Assisted Cracking: Theory and Practice
||Fundamental Mechanisms of Mitigating Stress Corrosion Cracking of Austenitic Stainless Steels by Laser Shock Peening
||Bai Cui, Fei Wang, Xiaoxing Qiu, Chenfei Zhang, Yongfeng Lu, Michael Nastasi
|On-Site Speaker (Planned)
Austenitic stainless steels are susceptible to stress corrosion cracking (SCC) in hot and corrosive water environments, which has become a significant limit for the lifetime of these alloys in petroleum, chemical, and nuclear industries. The existing methods for controlling SCC have many limitations and problems. A laser shock peening (LSP) process has been identified as a new approach that can effectively mitigate SCC of austenitic stainless steels. However, the fundamental mechanisms by which this occurs remain poorly understood. In the LSP process, laser-driven shock waves are generated which can penetrate to a depth of more than 1 mm from the surface, inducing significant compressive residual stresses and plastic deformation in the sub-surface. This research will use experimental approaches to understand the microstructural evolution generated by LSP, determine the processing-microstructure-property relationship in the LSP process, and elucidate the mechanisms that enable LSP to mitigate SCC of austenitic stainless steels.
||Planned: Supplemental Proceedings volume