|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Advanced High-strength Steels
||Tensile Properties of Tempered-martensitic Medium Mn Lightweight Steel
||Sukjin Lee, Seok-Hyeon Kang, Jae-Hoon Nam, Sang-Min Lee, Young-Kook Lee
|On-Site Speaker (Planned)
The weight reduction of vehicles has become a key issue for the better environment and energy saving. This social demand made many researches focused on developing a new steel grade with both high strength and low density, which is so-called high strength lightweight steel. The lightweight steels commonly contain high Al concentrations above 5 wt. % and their microstructure is mixed with a matrix of δ-ferrite and/or γ-austenite and κ-carbide. However, up to date there is no report on the medium Mn lightweight steel with a matrix of α'-martensite. Recently, some of present authors have reported the precipitation of κ-carbide inside α'-martensite during tempering of a medium Mn lightweight steel. Accordingly, in the present study we investigated the microstructural evolution of a medium Mn lightweight steel as a function of tempering temperature and its effect on tensile properties to develop a new high strength medium Mn lightweight steel.
||Planned: Supplemental Proceedings volume