Effects of aluminum on microstructure and compressive properties of Al-Cr-Fe-Ni eutectic multi-component alloys

被引：174
作者：
Chen, X. [1 ]
Qi, J. Q. [1 ]
Sui, Y. W. [1 ]
He, Y. Z. [1 ]
Wei, F. X. [1 ]
Meng, Q. K. [1 ]
Sun, Z. [1 ]
机构：
[1] China Univ Min & Technol, Sch Mat Sci & Engn, Xuzhou 221116, Jiangsu, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2017年 / 681卷
基金：
中国国家自然科学基金;
关键词：
High entropy alloy; Eutectic phase; Microstructure; Mechanical property; HIGH-ENTROPY ALLOY; MECHANICAL-PROPERTIES; BEHAVIOR; ELEMENTS; SYSTEM; HEAT; TI;
D O I：
10.1016/j.msea.2016.11.019
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Al CrFeNi eutectic multi-component alloys were prepared to obtain excellent mechanical properties by double phase strengthening. The X-ray diffraction results showed that the crystal structure were both body-centered cubic and energy-dispersive X-ray spectrometer identified that the two phases are ordered NiAl intermetallic and disordered [Fe, Cr] solid solution. The formation of eutectic structures was introduced by a simplified dynamic model. After mechanical tests, the alloys presented excellent compressive strength and unexpected large deformation. Due to the solid solution and fine-grain strengthening resulted by Al addition, mechanical properties of Al CrFeNi alloys exhibited regularity in some degree. Among all alloys, Al1.3CrFeNi has the highest fracture strength and Al0.9CrFeNi has the most excellent strain. Besides, Al1.2CrFeNi alloy showed a good combination of strength and ductility.
引用
收藏
页码：25 / 31
页数：7
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