| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Performance Steels
|
| Presentation Title |
Deformation and Damage Evolution of AHSS in Uniaxial Tension and Plane Strain Bending |
| Author(s) |
Nizia Mendes Fonseca, David Wilkinson, Jidong Kang |
| On-Site Speaker (Planned) |
Nizia Mendes Fonseca |
| Abstract Scope |
AHSS show reduced ductility during local formability operations such as tight-radius bending and edge stretching, which is not predicted by the tensile elongation. Therefore, it is crucial to understand how the microstructure of AHSS affects their behaviour in tension and tight-radius bending. A DP and a Q&P steel were investigated in this project. The strain distribution at the sub-grain level and the damage micromechanisms were assessed through quasi in-situ SEM tensile and bend testing. X-ray computed micro-tomography (µ-XCT) was employed to measure the three-dimensional damage development quantitatively. Results show that damage nucleation and evolution are delayed in the Q&P steel compared to the DP steel. The improved behaviour of the Q&P980 steel can be attributed to the TRIP effect and the mechanical compatibility between the microstructural constituents. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Mechanical Properties, |