| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced High Strength Steels IV
|
| Presentation Title |
An Energy Absorbing Medium Mn Steel for Industry |
| Author(s) |
Thomas Wei Jie Kwok, Xin Xu, David Dye |
| On-Site Speaker (Planned) |
Thomas Wei Jie Kwok |
| Abstract Scope |
Medium Mn steels have been of large research interest recently due to their high energy absorbed upon deformation. We present a new medium Mn steel with 8 wt% Mn and a microalloy content of <0.1 wt% V. The steel is designed to be processed on existing machinery that manufactures dual phase steels and is more cost-effective than DP800 which is currently used in automotive crash assemblies. In the annealed condition, it was found that the steel deforms via the TWIP+TRIP mechanism. When cold rolled, the TWIP effect can be selectively consumed to provide a large increment in strength while the TRIP effect can still be triggered to provide ductility and strain hardening during deformation. SEM and EBSD were used to elucidate the change in microstructure between annealed and cold rolled conditions. TEM was used to characterise the V precipitates which contribute to the strengthening of the steel. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |