|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Advanced High-Strength Steels
||High Speed Tensile Test with Infrared Thermography and Microstructure Analysis on a High Mn TWIP Steel
||Sebastian Wesselmecking, Harald Hofmann, Thorsten Beier, Thorsten Rösler, Maximillian Nagel, Klaus Unruh, Wolfgang Bleck
|On-Site Speaker (Planned)
Due to the increasing demand for lightweight design in the automotive industry, twinning induced plasticity (TWIP) steels are receiving extended attention, as they combine high strength with outstanding plasticity. Especially crash relevant material parameters like strain rate sensitivity and the influence of adiabatic deformation conditions on the strain hardening behavior are of great importance for design proposes. In the presented study, high strain rate as well as isothermal tensile tests were conducted on a 0.4C-19Mn-2Cr-1Al-V TWIP steel. Adiabatic heating is quantified with high speed infrared thermography and correlated with the mechanical properties as well as the microstructure. It can be pointed out that the dynamic temperature change with increasing strain leads a decrease of strain hardening potential. Besides a thermal softening effect, it is found that the dynamic change of the stacking fault energy affects also the twinning behavior of the steel, also decreasing the materials strength.
||Planned: Supplemental Proceedings volume