About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
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Symposium
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Mechanical Response of Materials Investigated Through Novel In-Situ Experiments and Modeling
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Presentation Title |
Deformation Behavior Identification of a Friction Stir Welded 304L Austenitic Stainless-steel Using In-situ EBSD |
Author(s) |
Nitish Bibhanshu, Maxim N. Gussev, Wei Tang |
On-Site Speaker (Planned) |
Nitish Bibhanshu |
Abstract Scope |
Friction stir welding (FSW) is a solid-phase joining technique that may join irradiated materials without helium-induced cracking due to its low heat generation capabilities along with low mechanical induced thermal strain gradient. In this work, we present microstructural evolution after friction stir welding (FSW) of 304L austenitic stainless-steel that shows the distribution of the Helium (He) bubbles in the stir zone (SZ) as well as in the thermomechanical affected zone (TMAZ) with an amount of ~5.2 appm. The investigations were carried out on three tensile miniature samples picked from the SZ, TMAZ, and base metal (BM). The FSW causes a gradient in the microstructural features like grain size, grain boundary character and their percentage from the BM to the SZ. With three different microstructural features, deformation responses were investigated. Results reveal that the change of the grain boundary character occurred during the deformation and it also influences the hardening response. |
Proceedings Inclusion? |
Planned: |
Keywords |
Nuclear Materials, Iron and Steel, Joining |