Development of 1.2 GPa Ferrite-based Lightweight Steels via Low-temperature Tempering
저온 템퍼링을 이용한 1.2 GPa급 페라이트계 경량철강 개발
Hyo Ju Bae, Kwang Kyu Ko, Hyoung Seok Park, Jae Seok Jeong, Jung Gi Kim, Hyokyung Sung, Jae Bok Seol배효주, 고광규, 박형석, 정재석, 김정기, 성효경, 설재복
Korean J. Met. Mater.
2021;59(10):683-691. Published online 2021 Sep 6
Previously reported low-Mn ferritic-based lightweight steels are potential candidates for industrial applications, however, they typically exhibit lower strength, with < 1 GPa and lower strength-ductility balance, than medium- and high-Mn austenitic lightweight steels. Herein, we introduce a low-temperature tempering-induced partitioning (LTP) treatment that avoids the strength-ductility dilemma of low-Mn ferriticbased..... More