A cobalt-rich eutectic high-entropy alloy in the system Al-Co-Cr-Fe-Ni

被引：31
作者：
Shafiei, Ali [1 ]
Rajabi, Samin [1 ]
机构：
[1] NRI, Met Grp, Tehran 14665517, Iran
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2019年 / 125卷 / 11期
关键词：
SIGMA-PHASE FORMATION; MECHANICAL-PROPERTIES; MICROSTRUCTURE; THERMODYNAMICS; SUPERALLOYS; EXPLORATION; COMPOSITES; CRITERION; STRATEGY; PATH;
D O I：
10.1007/s00339-019-3084-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
By using the well-established CALPHAD methodology, a cobalt-rich eutectic high-entropy alloy is designed and made for the system Al-Co-Cr-Fe-Ni. Microstructural studies show that the designed alloy has a dual FCC/BCC phase structure and is composed of nanostructured lamellar-irregular regions. The mechanical properties of the alloy are investigated by compression test. The ultimate strength and the ductility of the alloy are measured to be 2150 MPa and 40%, respectively. The effect of Al concentration on the microstructure and mechanical properties of the alloy is investigated.
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页数：11
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