Al<sub>x</sub>CoCrCuFeNi多主元高熵合金的组织与力学性能

温丽华; 寇宏超; 王一川; 常辉; 李金山; 胡锐; 周廉

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Al_xCoCrCuFeNi多主元高熵合金的组织与力学性能
Microstructure and Mechanical Properties of AlxCoCrCuFeNi Multi-element High Entropy Alloy
2009年29卷第6期页码：579-581
纸质出版日期： 2009 ，
DOI：

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[1]温丽华,寇宏超,王一川,常辉,李金山,胡锐,周廉.Al_xCoCrCuFeNi多主元高熵合金的组织与力学性能[J].特种铸造及有色合金,2009,29(06):579-581+490.

Wen Lihua, Kou Hongchao, Wang Yichuan, et al. Microstructure and Mechanical Properties of AlxCoCrCuFeNi Multi-element High Entropy Alloy[J]. Special Casting & Nonferrous Alloys, 2009,29(6):579-581.
[1]温丽华,寇宏超,王一川,常辉,李金山,胡锐,周廉.Al_xCoCrCuFeNi多主元高熵合金的组织与力学性能[J].特种铸造及有色合金,2009,29(06):579-581+490. DOI：

Wen Lihua, Kou Hongchao, Wang Yichuan, et al. Microstructure and Mechanical Properties of AlxCoCrCuFeNi Multi-element High Entropy Alloy[J]. Special Casting & Nonferrous Alloys, 2009,29(6):579-581. DOI：

摘要

采用X射线衍射、扫描电镜和压缩试验等手段

研究了不同条件下AlxCoCrCuFeNi多主元高熵合金的组织与力学性能。结果表明

铸态合金为典型的树枝晶组织

枝晶间存在明显的Cu富集;随着Al含量的增多

FCC相含量减少

BCC相含量增多

从而导致AlxCoCrCuFeNi具有较高的屈服强度

而且塑性应变量超过5.8%。

Abstract

Effects of Al content on microstructure and mechanical properties of AlxCoCrCuFeNi multi-element high entropy alloy were investigated by XRD（X-ray diffraction）

SEM（scanning electron microscope）and compressive testing.The results verify that microstructure of the as-cast alloy exhibits typically dendrite in which there exists distinctly Cu-enrichment.With increasing in Al content

FCC content is decreased and BCC phase content is increased

which results in the high yield strength and plastic strain more than 5.8% in AlCoCrCuFeNi alloy.