Effects of Yttrium on the pitting corrosion behavior of 304 stainless steel with coating by laser remelting

doi:10.1088/2053-1591/ab59f0

IMR OpenIR

	Effects of Yttrium on the pitting corrosion behavior of 304 stainless steel with coating by laser remelting
	Liu,Mengnan 1; Chen,Dongxu 1,2; Wang,Yanan 1; Zhou,Yanwen 1; Zhang,Junwei 1; Wang,Xiang 2
	2019-11-29
发表期刊	Materials Research Express
卷号	6 期号:12
摘要	Abstract The remelted layers with or without Y2O3 were prepared for 304 stainless steel (SS) by laser remelting for improving the pitting corrosion resistance. Influences of laser remelting and Y2O3 addition on the microstructure and the pitting corrosion behavior of 304 SS have been investigated. The pitting corrosion resistance of 304 SS can be improved by laser remelting because of the fine grains were formed within the remelted layer of 304 SS after laser remelting. The addition of Y2O3 can effectively refine the grain size and eliminate the defects and inclusions in the remelted layer. The microstructure of the remelted layer was more uniform and compact that can hinder the contact between the aggressive media and the matrix. In this study, the pitting potentials of remelted layer with or without addition of Y2O3 were 0.20 V and 0.16 V respectively, which were both increased than that of the matrix (0.08 V). The polarization resistances of remelted layer with or without the addition of Y2O3 were 38 kΩ and 29 kΩ respectively, which were both increased than that of the matrix (23 kΩ). The addition of Y2O3 in laser remelting layer can obviously improve the pitting corrosion of 304 SS and the related mechanisms are also discussed.
关键词	laser remelting 304 stainless steel pitting corrosion Y2O3 electrochemical
DOI	10.1088/2053-1591/ab59f0
语种	英语
WOS记录号	IOP:2053-1591-6-12-ab59f0
出版者	IOP Publishing
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/80603
专题	中国科学院金属研究所
作者单位	1.School of Material and Metallurgy, University of Science and Technology Liaoning, Anshan, 114051, People’s Republic of China 2.CAS Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, People’s Republic of China
推荐引用方式 GB/T 7714	Liu,Mengnan,Chen,Dongxu,Wang,Yanan,et al. Effects of Yttrium on the pitting corrosion behavior of 304 stainless steel with coating by laser remelting[J]. Materials Research Express,2019,6(12).
APA	Liu,Mengnan,Chen,Dongxu,Wang,Yanan,Zhou,Yanwen,Zhang,Junwei,&Wang,Xiang.(2019).Effects of Yttrium on the pitting corrosion behavior of 304 stainless steel with coating by laser remelting.Materials Research Express,6(12).
MLA	Liu,Mengnan,et al."Effects of Yttrium on the pitting corrosion behavior of 304 stainless steel with coating by laser remelting".Materials Research Express 6.12(2019).