A novel as-cast precipitation-strengthened Al0.5V0.1FeCrMnNi0.9 high-entropy alloy with high strength and plasticity

被引：5

作者：

Li ChunHui ^{[1
]}

Wang MingLiang ^{[1
]}

Zhang HuanZhi ^{[1
]}

Zhang GuoJia ^{[1
]}

Li TianXin ^{[1
]}

Lu YiPing ^{[1
]}

Li TingJu ^{[1
]}

机构：

[1] Dalian Univ Technol, Sch Mat Sci & Engn, Key Lab Solidificat Control & Digital Preparat Te, Dalian 116024, Peoples R China

来源：

SCIENCE CHINA-TECHNOLOGICAL SCIENCES | 2021年 / 64卷 / 09期

基金：

中国博士后科学基金;

关键词：

high-entropy alloy; microstructure; mechanical properties; precipitation strengthening; MECHANICAL-PROPERTIES; TENSILE PROPERTIES; CORROSION-RESISTANCE; MICROSTRUCTURE; BEHAVIOR; DESIGN;

D O I：

10.1007/s11431-021-1866-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A novel Al0.5V0.1FeCrMnNi0.9 high-entropy alloy was designed to achieve enhanced strength and plasticity. The as-cast Al0.5V0.1FeCrMnNi0.9 alloy shows a typical dendritic microstructure consisting of a body-centered cubic-structured matrix phase and a B2-structured nanoprecipitate phase. Nanoprecipitates are homogeneous and dispersed in the matrix. The as-cast Al0.5V0.1FeCrMnNi0.9 alloy exhibits a compressive yield strength of 1.104 GPa, a fracture strength of 2.926 GPa, and a fracture strain of 45.7%. The product of strength and plasticity of this alloy is 133.72 GPa%, which is superior to that of most of the reported high-entropy alloys. The strengthening mechanisms were evaluated in detail, which indicates that the coherent precipitation enhancement contributes to the unusually high strength and plasticity.

引用

页码：1920 / 1926

页数：7

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