Microstructure and mechanical properties of a refractory AlMo0.5NbTa0.5TiZr high-entropy alloy manufactured by laser-directed energy deposition

被引：14

作者：

Su, Bing ^{[1
,2
]}

Li, Jia ^{[2
]}

Yang, Chen ^{[2
,3
]}

Zhang, Yansong ^{[1
,2
]}

Li, Zhuo ^{[2
,3
]}

Zhang, Yihe ^{[1
,2
]}

机构：

[1] Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China

[2] Natl Engn Lab Addit Mfg Large Met Components, Beijing 10091, Peoples R China

[3] Beihang Univ, Res Inst Frontier Sci, Beijing 100191, Peoples R China

来源：

MATERIALS LETTERS | 2023年 / 335卷

关键词：

Additive manufacturing; Microstructure; Mechanical properties; Refractory high-entropy alloy; METAL-DEPOSITION; ALUMINUM;

D O I：

10.1016/j.matlet.2022.133748

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study, the AlMo0.5NbTa0.5TiZr alloy was successfully manufactured by laser-directed energy deposition (LDED) using element powder blends. The microstructure and mechanical properties of the L-DED alloy have been compared with the alloy prepared by vacuum arc melting (VAM). The L-DED alloy consists of rod-shaped equiaxed dendrites. The interdendritic HCP phase content of the L-DED alloy is much higher than that of the VAM alloy. The L-DED alloy has the same superior high-temperature strength as the VAM alloy. Due to the precipitation strengthening, the microhardness of the L-DED alloy has a better performance than the VAM alloy.

引用

页数：4

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