Microstructures and mechanical properties of Co2MoxNi2VWx eutectic high entropy alloys

被引：152

作者：

Jiang, Hui ^{[1
]}

Zhang, Huanzhi ^{[1
]}

Huang, Tiandang ^{[1
]}

Lu, Yiping ^{[1
]}

Wang, Tongmin ^{[1
]}

Li, Tingju ^{[1
]}

机构：

[1] Dalian Univ Technol, Key Lab Solidificat Control & Digital Preparat Te, Sch Mat Sci & Engn, Dalian 116024, Peoples R China

来源：

MATERIALS & DESIGN | 2016年 / 109卷

基金：

中国国家自然科学基金;

关键词：

Eutectic high entropy alloy; Microstructure; Mechanical properties; SOLID-SOLUTION; AS-CAST; PHASE; BEHAVIOR; MO; STABILITY; STRENGTH; GROWTH; TI;

D O I：

10.1016/j.matdes.2016.07.113

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, Co2MoxNi2VWx (x = 0.5, 0.6, 0.8, 1.0, 1.5, and 1.75 in molar ratio) eutectic high entropy alloys (EHEAs) were designed to achieve a combination of strength and ductility. The effects of Mo and W elements on the microstructures and mechanical properties of the alloys were investigated, and results showed that by decreasing the Mo and W contents to 0.8 in Co2MoxNi2VWx alloy, a fully eutectic microstructure was obtained. By increasing the Mo and W contents to 1.75, a primary BCC solid solution phase plus eutectic microstructure were obtained. The eutectic microstructure consisted of a mixture of FCC solid solution phase and mu phase. The Co2Mo0.8Ni2VW0.8 alloy with the largest volume fraction of eutectic microstructure exhibited the highest compression strength of 2364 MPa, while the Co2Mo1.75Ni2VW1.75 alloy with the largest volume fraction of BCC phase exhibited the highest yield strength of 1607 MPa. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：539 / 546

页数：8

共 43 条

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