文献类型：期刊文献

英文题名：Physical metallurgy of medium-Mn advanced high-strength steels

作者：Sun, Binhan[1,2,5,6];Kwiatkowski da Silva, Alisson[2];Wu, Yuxiang[2];Ma, Yan[2];Chen, Hao[3,7];Scott, Colin[4];Ponge, Dirk[2];Raabe, Dierk[2,6]

机构：[1]East China Univ Sci & Technol, Shanghai, Peoples R China;[2]Max Planck Inst Eisenforschung, Dusseldorf, Germany;[3]Tsinghua Univ, Beijing, Peoples R China;[4]CanmetMat Nat Resources Canada, Hamilton, ON, Canada;[5]East China Univ Sci & Technol, Sch Mech & Power Engn, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai 200237, Peoples R China;[6]Max Planck Inst Eisenforschung, D-40237 Dusseldorf, Germany;[7]Tsinghua Univ, Sch Mat Sci & Engn, Key Lab Adv Mat Minist Educ, Beijing 100084, Peoples R China

年份：2023

卷号：68

期号：7

起止页码：786

外文期刊名：INTERNATIONAL MATERIALS REVIEWS

收录：;EI(收录号：20230413443282);WOS:【SCI-EXPANDED(收录号:WOS:000911405200001)】；

基金：Binhan Sun acknowledges the ?nancial support from the National Natural Science Foundation of China [grant number 52275147]. Hao Chen acknowledges the financial support from National Key R&D program of China (Grant 2022YFE0110800 and 2022YFB3705203) and the National Natural Science Foundation of China (grants 51922054 and U1808208).

语种：英文

外文关键词：Medium-Mn steels; advanced high-strength steels; microstructure; mechanical properties; phase transformation; damage

摘要：Steels with medium manganese (Mn) content (3 similar to 12 wt-%) have emerged as a new alloy class and received considerable attention during the last decade. The microstructure and mechanical response of such alloys show significant differences from those of established steel grades, especially pertaining to the microstructural variety that can be tuned and the associated micromechanisms activated during deformation. The interplay and tuning opportunities between composition and the many microstructural features allow to trigger almost all known strengthening and strain-hardening mechanisms, enabling excellent strength-ductility synergy, at relatively lean alloy content. Previous investigations have revealed a high degree of microstructure and deformation complexity in such steels, but the underlying mechanisms are not adequately discussed and acknowledged. This encourages us to critically review and discuss these materials, focusing on the progress in fundamental research, with the aim to obtain better understanding and enable further progress in this field. The review addresses the main phase transformation phenomena in these steels and their mechanical behaviour, covering the whole inelastic deformation regime including yielding, strain hardening, plastic instability and damage. Based on these insights, the relationships between processing, microstructure and mechanical properties are critically assessed and rationalized. Open questions and challenges with respect to both, fundamental studies and industrial production are also identified and discussed to guide future research efforts.