Microstructural evolution, phase selection and properties of CoCrCuFeMnxNi high-entropy alloys

被引：5
|
作者：
Du, Wendong [1 ]
Liu, Ning [1 ,2 ]
Zhou, Pengjie [1 ,2 ]
Wang, Xiaojing [1 ,2 ]
Wang, Bin [1 ]
Peng, Zhen [1 ]
机构：
[1] Jiangsu Univ Sci & Technol, Sch Mat Sci & Engn, 2 Mengxi Rd, Zhenjiang 212003, Jiangsu, Peoples R China
[2] Jiangsu Univ Sci & Technol, Natl Demonstrat Ctr Expt Mat Sci & Engn Educ, Zhenjiang, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MATERIALS RESEARCH | 2018年 / 109卷 / 09期
基金：
中国国家自然科学基金;
关键词：
High-entropy alloy; Phase selection; Microstructure; Precipitates; Properties; SOLID-SOLUTION; MN; STABILITY; BEHAVIOR; ELEMENTS;
D O I：
10.3139/146.111679
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Manganese was added to face-centered-cubic (fcc) high-entropy CoCrCuFeNi alloy to investigate the effects of Mn content on the microstructures, phase selection, and properties of CoCrCuFeMnxNi. CoCrCuFeMnxNi showed typical dendrite and interdendritic structures, and nanoprecipitates including Cu-rich cubic and Cr-rich acicular ones, were obtained in the interdendritic region. Calculated phase-selection-related parameters indicated that the formation of fcc phase was favored. Although two fcc structures were detected by X-ray diffraction, the interdendritic region showed body-centered-cubic, Cr-rich nanoprecipitates when x < 0.5. It is worth noting that the CoCrCuFeMn2.0Ni interdendrites showed an amorphous phase. CoCrCuFeMnxNi showed considerable ductility and increasing compressive strengths with increasing Mn content.
引用
收藏
页码：844 / 850
页数：7
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