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

被引：0
|
作者：
ChunHui Li
MingLiang Wang
HuanZhi Zhang
GuoJia Zhang
TianXin Li
YiPing Lu
TingJu Li
机构：
[1] Dalian University of Technology,Key Laboratory of Solidification Control and Digital Preparation Technology (Liaoning Province), School of Materials Science and Engineering
来源：
Science China Technological Sciences | 2021年 / 64卷
关键词：
high-entropy alloy; microstructure; mechanical properties; precipitation strengthening;
D O I：
暂无
中图分类号：
学科分类号：
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.
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页码：1920 / 1926
页数：6
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