Microstructure and properties of AlCrxFeNi1.2Cu0.8 high-entropy alloys at high temperature

被引：1
作者：
Li, Chunyan [1 ,2 ,3 ]
Tang, Zihui [2 ]
Lu, Yu [2 ]
Tian, Lin [2 ]
Zhai, Jianshu [2 ]
Li, Xiaocheng [1 ,2 ]
Kou, Shengzhong [1 ,2 ,3 ]
机构：
[1] Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou, Peoples R China
[2] Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou, Peoples R China
[3] Lanzhou Univ Technol, Wenzhou Engn Inst Pump & Valve, Wenzhou, Peoples R China
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 2023年 / 39卷 / 18期
基金：
中国国家自然科学基金; 浙江省自然科学基金;
关键词：
High-entropy alloys; High temperature; Microstructure; Mechanical properties; Corrosion resistance;
D O I：
10.1080/02670836.2023.2240590
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
With the development of space technology, high-temperature resistant materials have become one of the hot spots in space research. The research of new high-temperature materials has become the key to breakthrough in aviation field. Research on microstructure and properties of AlCrxFeNi1.2Cu0.8 high-entropy alloys at high temperature (900, 1000 and 1100 & DEG;C) were studied in this paper. After high-temperature annealing, the structural stability of alloys is maintained and the microstructure of alloys is dendrite. The grains are refined with the increase of Cr content. The alloy exhibits excellent comprehensive mechanical properties after heat treatment. The compressive strength of the alloy is above 1000 MPa and the plasticity of the alloy is above 10%. The alloy changes from brittle to tough with the increase in temperature. The hardness of Cr1.25 specimen is doubled after annealing, and the corrosion resistance of Cr 0.5 specimen is the best.
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页码：3167 / 3176
页数：10
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