材料科学技术(英文版)2024,Vol.187Issue(20) :240-247.DOI:10.1016/j.jmst.2023.11.032

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

Hao Cheng Lixin Sun Wentao Li Yang Zhang Ye Cui Dan Chen Zhongwu Zhang
材料科学技术(英文版)2024,Vol.187Issue(20) :240-247.DOI:10.1016/j.jmst.2023.11.032

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

Hao Cheng 1Lixin Sun 1Wentao Li 1Yang Zhang 1Ye Cui 1Dan Chen 1Zhongwu Zhang1
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作者信息

  • 1. Key Laboratory of Superlight Materials and Surface Technology,Ministry of Education,College of Materials Science and Chemical Engineering,Harbin Engineering University,Harbin 150001,China
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Abstract

Deformation-induced twinning or martensitic transformation can improve the work-hardening capabil-ity 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 prop-erties.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.

Key words

Precipitation/Stacking fault energy/High manganese steel/Work hardening/V-carbides

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基金项目

Natural Science Foundation of China(52171111)

Natural Science Foundation of China(U2141207)

Natural Science Foundation of China(52001083)

Youth Talent Project of China National Nuclear Corporation(CNNC2021Y-TEP-HEU01)

China Postdoctoral Science Foundation(2020M681077)

Natural Science Foundation of Heilongjiang(LH2019E030)

Heilongjiang Postdoctoral Science Foundation(LBH-Z19125)

Heilongjiang Touyan Innovation Team Program()

出版年

2024
材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCDCSCD
影响因子:0.657
ISSN:1005-0302
参考文献量56
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