Significantly improved corrosion resistance of Mg-15Gd-2Zn-0.39Zr alloys: Effect of heat-treatment

doi:10.1016/j.jmst.2019.03.027

CORC > 金属研究所 > 中国科学院金属研究所

	Significantly improved corrosion resistance of Mg-15Gd-2Zn-0.39Zr alloys: Effect of heat-treatment
	Liu, Jing 1; Yang, Lixin 2; Zhang, Chunyan 2; Zhang, Bo 2; Zhang, Tao 3; Li, Yang 3; Wu, Kaiming 1; Wang, Fuhui 3
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2019-08-01
卷号	35 期号:8 页码:1644-1654
关键词	Mg-Gd-Zn-Zr alloy Corrosion behavior Heat-treatment LPSO phase SKPFM
ISSN号	1005-0302
DOI	10.1016/j.jmst.2019.03.027
通讯作者	Zhang, Bo(bozhang@imr.ac.cn) ; Zhang, Tao(zhangtao@mail.neu.edu.cn)
英文摘要	The effects of heat-treatment on corrosion behavior of Mg-15Gd-2Zn-0.39 Zr alloys were investigated through microstructure characterization, corrosion tests, and scanning Kelvin probe force microscope (SKPFM) analysis. In long-term corrosion experiments, the corrosion rates of Mg-Gd-Zn-Zr alloys were mainly determined by the effects of micro-galvanic corrosion. During heat-treatment, the beta-(Mg,Zn)(3)Gd eutectic phase in as-cast alloys transformed into a long-period stacking ordered (LPSO) phase, coupled with the precipitation of small precipitates. As heat-treatment proceeded, the local potential and the volume fraction of the LPSO phases reduced gradually compared with the eutectic phase, which resulted in a remarkable decrease of the micro-galvanic effect between the second phase and Mg matrix. As a result, the corrosion resistance of heat-treated alloys improved significantly. (C) 2019 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
资助项目	National Natural Science Foundation of China[51531007] ; National Natural Science Foundation of China[51771050] ; National program for the Young Top-notch Professionals ; Fundamental Research Funds for the Central Universities[N170205002]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	JOURNAL MATER SCI TECHNOL
WOS记录号	WOS:000470677300016
资助机构	National Natural Science Foundation of China ; National program for the Young Top-notch Professionals ; Fundamental Research Funds for the Central Universities
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/133673]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhang, Bo; Zhang, Tao
作者单位	1.Wuhan Univ Sci & Technol, Int Res Inst Steel Technol, Hubei Prov Key Lab Syst Sci Met Proc, State Key Lab Refractories & Met, 947 Heping Ave, Wuhan 430081, Hubei, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China 3.Northeastern Univ, Shenyang Natl Lab Mat Sci, 3-11 Wenhua Rd, Shenyang 110819, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Liu, Jing,Yang, Lixin,Zhang, Chunyan,et al. Significantly improved corrosion resistance of Mg-15Gd-2Zn-0.39Zr alloys: Effect of heat-treatment[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2019,35(8):1644-1654.
APA	Liu, Jing.,Yang, Lixin.,Zhang, Chunyan.,Zhang, Bo.,Zhang, Tao.,...&Wang, Fuhui.(2019).Significantly improved corrosion resistance of Mg-15Gd-2Zn-0.39Zr alloys: Effect of heat-treatment.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,35(8),1644-1654.
MLA	Liu, Jing,et al."Significantly improved corrosion resistance of Mg-15Gd-2Zn-0.39Zr alloys: Effect of heat-treatment".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 35.8(2019):1644-1654.