Effects of Laser Surface Remelting on Microstructure and Corrosion Properties of Mg-12Dy-1.1Ni Alloy

doi:10.1007/s11665-022-06933-y

	Effects of Laser Surface Remelting on Microstructure and Corrosion Properties of Mg-12Dy-1.1Ni Alloy
	Bi, Guangli 1,2; Chen, Siqi 1,2; Jiang, Jing 1,2; Li, Yuandong 1,2; Chen, Tijun 1,2; Chen, Xiao-Bo 3; Zhang, Duyao 3; Qiu, Dong 3; Easton, Mark 3
刊名	Journal of Materials Engineering and Performance
	2022
关键词	Corrosion resistance Corrosion resistant alloys Corrosive effects Grain refinement Grain size and shape Microstructure Remelting Sodium chloride Ternary alloys Yttrium alloys As cast alloy As-cast Corrosion property Electrochemical test Grainsize Immersion tests Laser surface remelting Long-period stacking order phase Long-period stacking order structures Microstructures properties
ISSN号	1059-9495
DOI	10.1007/s11665-022-06933-y
英文摘要	Effects of laser surface remelting (LSR) on microstructure and corrosion properties of as-cast Mg-12Dy-1.1Ni (wt.%) alloy were investigated. The as-cast alloy was mainly composed of α-Mg, lamellar Mg12DyNi phase with an 18R-long period stacking order (LPSO) structure and Mg24Dy5. After LSR treatment, fine and compact 18R-LPSO phase reprecipitated on dendrite boundaries as a continuous network. In addition, the volume fraction of the LPSO phase remarkably increased to 34.9% and the grain size of as-cast alloy was refined to ca. 4 μm. Electrochemical and immersion tests indicated that the LSR-treated alloy exhibited a lower weight loss rate (2.8 ± 0.2 mg/cm2/h) and corrosion current density (160.1 ± 20.7 μA/cm2, and of 37% reduction after LSR) than the as-cast alloy in 0.1 M NaCl solution. The improved corrosion resistance of the LSR alloy was mainly ascribed to the grain refinement and continuous distribution of 18R-LPSO phase on dendrite boundaries. © 2022, The Author(s).
语种	英语
出版者	Springer
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/159102]
专题	材料科学与工程学院
作者单位	1.School of Material Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 3.RMIT Centre for Additive Manufacturing, School of Engineering, RMIT University, Melbourne; VIC; 3000, Australia
推荐引用方式 GB/T 7714	Bi, Guangli,Chen, Siqi,Jiang, Jing,et al. Effects of Laser Surface Remelting on Microstructure and Corrosion Properties of Mg-12Dy-1.1Ni Alloy[J]. Journal of Materials Engineering and Performance,2022.
APA	Bi, Guangli.,Chen, Siqi.,Jiang, Jing.,Li, Yuandong.,Chen, Tijun.,...&Easton, Mark.(2022).Effects of Laser Surface Remelting on Microstructure and Corrosion Properties of Mg-12Dy-1.1Ni Alloy.Journal of Materials Engineering and Performance.
MLA	Bi, Guangli,et al."Effects of Laser Surface Remelting on Microstructure and Corrosion Properties of Mg-12Dy-1.1Ni Alloy".Journal of Materials Engineering and Performance (2022).