Enhancing strength-ductility synergy in high-Mn steel by tuning stacking fault energy via precipitation

被引：15

作者：

Cheng, Hao ^{[1
]}

Sun, Lixin ^{[1
]}

Li, Wentao ^{[1
]}

Zhang, Yang ^{[1
]}

Cui, Ye ^{[1
]}

Chen, Dan ^{[1
]}

Zhang, Zhongwu ^{[1
]}

机构：

[1] Harbin Engn Univ, Coll Mat Sci & Chem Engn, Key Lab Superlight Mat & Surface Technol, Minist Educ, Harbin 150001, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2024年 / 187卷

关键词：

Precipitation; Stacking fault energy; High manganese steel; Work hardening; V-carbides; INDUCED PLASTICITY STEELS; MECHANICAL-PROPERTIES; AUSTENITIC STEEL; GRAIN-SIZE; MICROSTRUCTURE; BEHAVIOR; TRIP; TRANSFORMATION; EVOLUTION; THICKNESS;

D O I：

10.1016/j.jmst.2023.11.032

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Deformation-induced twinning or martensitic transformation can improve the work-hardening capability of alloys with face-centered cubic (FCC) structures and suppress strain localization. The stacking fault energy (SFE) of alloys plays a key role in determining deformation mechanisms and mechanical properties. This study developed V-bearing high -Mn steel with a tensile strength of 1288 MPa and uniform elongation of 36 % by tactfully designing the composition. Precipitation of V-carbides was selected to strengthen the steel and tune the global SFE of the matrix by settling carbon. Stronger work-hardening capability due to lower SFE and finer twin/matrix lamellae provided the steel with good ductility, while precipitation strengthened it. (c) 2024 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.

引用

页码：240 / 247

页数：8

共 56 条

[1] A REVISED EXPRESSION FOR THE DIFFUSIVITY OF CARBON IN BINARY FE-C AUSTENITE [J].