文献类型：期刊文献

英文题名：Extraordinary yield strength-ductility synergy by designing layered austenitic stainless and medium Mn steel sheets

作者：Huang, Minghao[1];Yang, Xin[1];Yuan, Jiahua[2];Xi, Xiaohui[3];Xu, Shenghang[1]

机构：[1]Hangzhou City Univ, Adv Mat Addit Mfg Innovat Res Ctr, Hangzhou 310015, Peoples R China;[2]Northeastern Univ, State Key Lab Digital Steel, Shenyang 110819, Peoples R China;[3]Guangdong Ocean Univ, Sch Mech & Power Engn, Zhanjiang 524000, Peoples R China

年份：2025

卷号：48

外文期刊名：MATERIALS TODAY COMMUNICATIONS

收录：SCI-EXPANDED(收录号：WOS:001541292100005)、、EI(收录号：20253018864886)、Scopus(收录号：2-s2.0-105011586249)、WOS

基金：The research was financially supported by the Zhejiang Provincial Natural Science Foundation of China (No. LQ24E040003) , and Hang-zhou City University (No. 204000-581896) .

语种：英文

外文关键词：316 L; Medium-Mn steel; Deformation twinning; Strain hardening; Laminates steel sheets; Back stress hardening

外文摘要：Fabricating multi-material metal sheets through heterostructural design has gained significant attention for achieving multi-objective performance optimization. Present fabricated tri-layered steel (TLS) sheets with a 316 L/medium-Mn steel/316 L configuration through hot rolling methods. The TLS exhibits a strength-ductility synergy with a yield strength of 619 MPa and a ductility of 38 %. The good mechanical performance is primarily attributed to the strong interfacial bonding and the pronounced strain hardening effects induced by the heterointerface. The geometrically necessary dislocations (GNDs) accumulate near the medium-Mn steel/316 L interface and accommodate interlayer strain incompatibility, contributing to the back stress hardening effect. Furthermore, localized twinning-induced plasticity (TWIP) effects occurred in the 316 L layer, particularly in austenitic grains adjacent to the interface, driven by stress gradients. The TWIP effects further enhance strain hardening, thereby improving the tensile strength of the sample. These findings provide valuable insights into the design of cost-effective and high-strength, laminated steels for advanced engineering applications.