Lightweight Co-free eutectic high-entropy alloy with high strength and ductility by casting

被引：5

作者：

Feng, Shuai ^{[1
]}

Guan, Shuai ^{[2
]}

Liu, Xiangkui ^{[1
]}

Peng, Siyuan ^{[3
]}

Dong, Kewei ^{[1
]}

Yang, Yang ^{[1
]}

Chen, Xinsheng ^{[1
]}

Liang, Yuzheng ^{[1
]}

Wang, Qipeng ^{[1
]}

Liu, Yanfang ^{[1
]}

Peng, Yong ^{[1
]}

Wang, Kehong ^{[1
]}

Chen, Wen ^{[2
]}

Kong, Jian ^{[1
]}

机构：

[1] Nanjing Univ Sci & Technol, Sch Mat Sci & Engn, Nanjing 210094, Peoples R China

[2] Univ Massachusetts, Dept Mech & Ind Engn, Amherst, MA 01003 USA

[3] Xiamen Univ Technol, Sch Mat Sci & Engn, Fujian Key Lab Funct Mat & Applicat, Xiamen, Peoples R China

来源：

MATERIALS RESEARCH LETTERS | 2024年 / 12卷 / 01期

关键词：

Eutectic high-entropy alloy; Lamellar structure; mechanical properties; strengthening mechanism; martensitic transformation; MECHANICAL-PROPERTIES; DEFORMATION-BEHAVIOR; PHASE-TRANSFORMATION; DESIGN;

D O I：

10.1080/21663831.2023.2284328

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report a cast light-weight dual-phase eutectic high-entropy alloy (EHEA) of Ni49Fe28Al17V6 that comprises of alternating FCC and ordered B2 lamellae. Such lamellar EHEA exhibits a superior tensile strength of similar to 1.3 GPa in combination with a large uniform elongation of similar to 26%, well surpassing those of other state-of-the-art cast EHEAs. The high strength-ductility synergy originates largely from the extensive dislocation activities in both FCC and B2 lamellae. In addition, the martensitic transformation of the B2 lamellae during deformation further promotes the work hardening capability to enhance the tensile strength and ductility.

引用

页码：26 / 33

页数：8

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