|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Advanced High-strength Steels
||Effect of Strain Rate on Mechanical Properties of a 1 GPa-grade TRIP-aided Multi-microstructure Steel
||Noriyuki Tsuchida, Satoshi Ohkura, Takaaki Tanaka, Yuki Toji
|On-Site Speaker (Planned)
Effect of strain rate on TRIP effect and high-speed deformation behavior of a 1 GPa-grade TRIP-aided multi microstructure (TRIP) steel were studied. The strain rate range in this study was between 3.3 ×10-6 and 103 /s, and the effect of retained austenite (γR) shapes on TRIP effect in the 1 GPa-grade TRIP steel was also focused on. The effects of strain rate on tensile strength and flow stress in the TRIP steels were small whereas that on uniform elongation was large. The strain rate dependences on tensile strength and uniform elongation in the TRIP steels were more closely to those of the metastable austenitic stainless steels than the conventional TRIP and dual-phase steels. In the present strain rate range, the 1 GPa-grade TRIP steel with the γR shape of needle-like showed better tensile properties and absorbed energy.
||Planned: Supplemental Proceedings volume