| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Friction Stir Welding and Processing XI
|
| Presentation Title |
Study of Residual Stress and Microstructure Changes in Friction Stir Processed Dual Phase 980 Grade Steel |
| Author(s) |
Koichi Taniguchi, Yong Chae Lim, Jeffery Bunn, Zhili Feng |
| On-Site Speaker (Planned) |
Koichi Taniguchi |
| Abstract Scope |
Friction stir processing is a unique solid-state process to change microstructures and their mechanical properties by extensive shear and plastic deformation. The complex microstructure evolutions, such as texture changes, dynamic recrystallization and grain refinement, transiently occur due to the compressive and shear loading in elevated temperature during the process. In present work, we employed a pin-less friction stir processing on advance high strength steel (i.e., dual phase 980MPa grade steel) with different processing conditions. Different peak temperatures under different processing conditions were measured by thermocouples and infrared camera. Friction stir processed steel samples were characterized by optical and electron microscopies, microhardness measurement, and residual stress measured by neutron beam at Oak Ridge National Laboratory to study quantitative stress state and correlation to microstructure evolutions under various processing conditions. |
| Proceedings Inclusion? |
Planned: |