Effects of Al addition on the microstructures and properties of MoNbTaTiV refractory high entropy alloy

被引：82

作者：

Ge, Shaofan ^{[1
,2
]}

Fu, Huameng ^{[1
,5
]}

Zhang, Long ^{[1
]}

Mao, Huahai ^{[3
,4
]}

Li, Hong ^{[1
,5
]}

Wang, Aimin ^{[1
,5
]}

Li, Weirong ^{[5
]}

Zhang, Haifeng ^{[1
,5
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China

[2] Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China

[3] KTH Royal Inst Technol, Mat Sci & Engn, Brinellvagen 23, SE-10044 Stockholm, Sweden

[4] Thermocalc Software AB, Rasundavagen 18A, SE-16967 Solna, Sweden

[5] Dongguan Eontec Co Ltd, Dongguan 523662, Guangdong, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2020年 / 784卷

基金：

中国国家自然科学基金;

关键词：

Refractory high entropy alloys; CALPHAD; Serration behavior; SOLID-SOLUTION PHASE; MECHANICAL-PROPERTIES; SERRATED FLOW; ALUMINUM; DESIGN;

D O I：

10.1016/j.msea.2020.139275

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

AlxMoNbTaTiV alloys are designed according to the binary phase diagrams and calculation of phase diagrams (CALPHAD). The phase formation and elemental segregation are predicted using the CALPHAD method. The effects of Al on microstructures, and mechnical properties of AlxMoNbTaTiV are investigated, which verified the results of calculated dendritic microstructure and BCC structure. The strengthening mechanism is proved as the result of chemical and electrical interactions. The serration behavior in the compression test at 25 degrees C, 500 degrees C, 700 degrees C, 900 degrees C is discussed. At room temperature, addition of Al enhanced the dynamic aging effects in low concentration. The effects became weaker with the increase of Al content. At 500 degrees C, higher Al concentration leads to stronger serrated flow.

引用

页数：9

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