Effect of Ti addition on the microstructure and corrosion behavior of laser cladding AlCoCrFeNi high-entropy alloy coatings

被引：13

作者：

Yue, Kun ^{[1
]}

Wang, Lin ^{[1
]}

Xu, Zhe ^{[1
]}

Cheng, Chunlong ^{[1
]}

Wang, Yeqing ^{[1
]}

Fan, Yu ^{[1
]}

Xu, Jie ^{[1
]}

Wang, Zhijun ^{[2
]}

Chen, Zheng ^{[1
]}

机构：

[1] China Univ Min & Technol, Sch Mat Sci & Phys, Xuzhou 221116, Peoples R China

[2] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China

来源：

VACUUM | 2024年 / 230卷

关键词：

High entropy alloys; Laser cladding; Ti addition; Spinodal decomposition; Corrosion resistance;

D O I：

10.1016/j.vacuum.2024.113633

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

AlCoCrFeNi high-entropy alloys (HEAs) has higher strength and wear resistance but poorer corrosion resistance. In the present investigation, the AlCoCrFeNi HEAs containing titanium(Ti) were fabricated via laser cladding to enhance the corrosion resistance properties of the coating and the influence of the Ti content on the microstructure of the coatings was investigated. The results show that the microstructure of the coating changed from a single BCC phase to a BCC + B2 phase with the addition of Ti. The Laves phases appeared within the coating when the Ti content was beyond 0.5 mol ratio. As an excellent corrosion-resistant element, Ti promoted the formation of a passive film and enhanced the corrosion resistance of the HEAs coating. The corrosion resistance of the coating first increased and then decreased with the addition of Ti, and the AlCoCrFeNiTi0.5 coating exhibited optimal corrosion resistance.

引用

页数：11

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