Simultaneous enhancement in strength and ductility of Fe50Mn30Co10Cr10 high-entropy alloy via nitrogen alloying

Yu Han ¹Huabing Li ²Hao Feng ¹Kemei Li ¹Yanzhong Tian ³Zhouhua Jiang²

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作者信息

1. School of Metallurgy, Northeastern University,Shenyang 110819, China
2. School of Metallurgy, Northeastern University,Shenyang 110819, China;State Key Laboratory of Rolling and Automation,Northeastern University, Shenyang 110819, China
3. School of Materials Science and Engineering,Northeastern University, Shenyang 110819, China
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Abstract

The effect of nitrogen on microstructural evolution and tensile properties of transformation-induced plasticity (TRIP) Fe50Mn30Co10Cr10 HEAs was investigated.Nitrogen was fully introduced in solid solution by pressure-induced melting technique.Nitrogen addition turned the TRIP alloy to a twinning-induced plasticity (TWlP) alloy,and simultaneously improved the strength and elongation.For the nitrogen-doped HEA,the high yield strength is mainly resulted from the friction stress via interstitial strengthening effect,and the high ductility is originated from retained high strain-hardening capability via the successive onset of dislocation accumulation and deformation twinning.The strain-hardening behavior and microstructural evolution at specified strains were revealed.

Key words

High-entropy alloy (HEA)/Transformation-induced plasticity (TRIP)/Twinning-induced plasticity (TWIP)/Strength/Ductility

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基金项目

出版年

2021

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)

CSTPCDCSCDSCI

影响因子：0.657

ISSN：1005-0302

参考文献量37

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