Effects of process parameters on microstructures and tensile properties of laser melting deposited CrMnFeCoNi high entropy alloys

被引：116

作者：

Xiang, Shuo ^{[1
,2
]}

Li, Jinfeng ^{[1
]}

Luan, Hengwei ^{[3
]}

Amar, Abdukadir ^{[2
]}

Lu, Siyuan ^{[4
]}

Li, Kun ^{[3
]}

Zhang, Lei ^{[1
]}

Liu, Xue ^{[1
]}

Le, Guomin ^{[1
]}

Wang, Xiaoying ^{[1
]}

Qu, Fengsheng ^{[1
]}

Zhang, Wei ^{[5
]}

Wang, Dou ^{[1
]}

Li, Qiang ^{[2
]}

机构：

[1] China Acad Engn Phys, Inst Mat, Mianyang 621907, Peoples R China

[2] Xinjiang Univ, Coll Phys & Technol, Urumqi 830046, Xinjiang, Peoples R China

[3] Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China

[4] Ningbo Univ, Sch Mech Engn & Mech, Ningbo 315211, Zhejiang, Peoples R China

[5] Jiangshu Vilory Adv Mat Technol Co Ltd, Xuzhou 221000, Jiangsu, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2019年 / 743卷

基金：

中国国家自然科学基金;

关键词：

Laser melting deposition; High entropy alloys; Microstructures; Tensile test; MECHANICAL-PROPERTIES; STRENGTH; COATINGS; BEHAVIOR; FRACTURE; ELEMENTS; GROWTH;

D O I：

10.1016/j.msea.2018.11.110

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this paper, a laser melting deposition (LMD) technique has been applied to fabricate CrMnFeCoNi high entropy alloys (HEAs). The microstructures and tensile properties of CrMnFeCoNi HEAs prepared under different laser power and scanning strategies have been investigated. It has been observed that the laser power and scanning strategy have significant effects on the columnar to equiaxed transitions (CET) of the microstructure of LMD CrMnFeCoNi HEAs because of their effects on heat flux direction and the temperature gradient. Due to small molten size and rapid cooling rate in LMD process which results in a significant solute-trapping effect and thus avoids component segregation, the elements distribution of LMD samples are more homogeneous than as-cast samples. Besides, tensile properties of the LMD samples can be adjusted by changing laser power and scanning strategy, which be corresponding to the changes of microstructure.

引用

页码：412 / 417

页数：6

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