Ultrahigh strength triggered by BCC and B2 eutectic-phase interfaces in a novel FeCrVNiAl high-entropy alloy

被引：2

作者：

Wang, M. Z. ^{[1
]}

Shen, Y. F. ^{[1
]}

Jia, N. ^{[1
]}

Xue, W. Y. ^{[2
]}

Wang, Z. D. ^{[2
]}

机构：

[1] Northeastern Univ, Minist Educ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat, Shenyang 110819, Peoples R China

[2] Northeastern Univ, State Key Lab Rolling & Automat, Shenyang, Peoples R China

来源：

MATERIALS RESEARCH LETTERS | 2024年 / 12卷 / 10期

基金：

国家重点研发计划;

关键词：

Coherent eutectic high-entropy alloy; alloy design; coherent interface; mechanical properties; MECHANICAL-PROPERTIES; LAVES PHASE; MICROSTRUCTURE; DESIGN; PLASTICITY; DUCTILITY; CAST;

D O I：

10.1080/21663831.2024.2383352

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The strength-ductility tradeoff and composition homogeneity have been the obstacles to obtaining advanced structural alloys. To overcome the limitations, we develop a novel coherently eutectic high-entropy alloy, i.e. Fe30Cr15V15Ni20Al20. By introducing a BCC phase with a low lattice misfit (0.13%) and constructing the BCC/B2 eutectic-phase interfaces, the alloy shows high mechanical stability. The low lattice mismatch contributes to the good stability of the phase interfaces and inhibits crack initiation. Thus, the as-cast Fe30Cr15V15Ni20Al20 alloy shows an excellent tensile yield strength of 929 MPa and a high yield compressive strength of 2423 MPa. In addition, it shows an excellent compressive strain of 22.3%. [GRAPHICS]

引用

页码：745 / 755

页数：11

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