Effect of yttrium modification on the corrosion behavior of AZ63 magnesium alloy in sodium chloride solution

doi:10.1016/j.jma.2020.02.027

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	Effect of yttrium modification on the corrosion behavior of AZ63 magnesium alloy in sodium chloride solution
	Li, Jiarun 1,2,3; Chen, Zhuoyuan 1,2,3,4; Jing, Jiangping 1,2,3; Hou, Jian 4
刊名	JOURNAL OF MAGNESIUM AND ALLOYS
	2021-03-15
卷号	9 期号:2 页码:613-626
关键词	Magnesium Yttrium alloying Corrosion Intermetallic phase Oxide layer
ISSN号	2213-9567
DOI	10.1016/j.jma.2020.02.027
通讯作者	Chen, Zhuoyuan(zychen@qdio.ac.cn)
英文摘要	The microstructures and corrosion behaviors of Mg-6%Al-3%Zn and Mg-6%Al-3%Zn-(0.25 similar to 1.0)%Y in 3.5 wt.% NaCl solution are investigated via morphology observation, phase characterization, immersion and electrochemical methods. The experimental results suggest that yttrium alloying can improve the corrosion resistance of Mg-6%Al-3%Zn throughout the immersion. The initial enhanced corrosion resistance of magnesium alloy is attributed to the Y alloying, which gives rise to the increasing content of Al2O3 in oxide layer. The promoted protectiveness of oxide layer on Mg-6%Al-3%Zn-1.0%Y alloy arouse a filiform corrosion as revealed by in-situ metallographic observation. Furthermore, the Y-containing magnesium alloys still perform higher corrosion resistance compared with that of Mg-6%Al-3%Zn alloy even if the oxide layer is exhausted. This phenomenon is owing to two factors, one is the gradual transformation of intermetallic phases from continuous Mg17Al12 to discrete Al2Y in matrix, by which the micro-galvanic corrosion between alpha-Mg grains and intermetallic phases is alleviated; the other is the morphology variation of corrosion products, the uniform and compact products layer on Y-containing alloys provide a barrier that effectively prevent the corrosive ions from penetrating into and reacting with Mg matrix. (C) 2020 Chongqing University. Publishing services provided by Elsevier B.V. on behalf of KeAi Communications Co. Ltd.
资助项目	Natural Science Foundation of ShanDong Province of China[ZR2018BD025] ; National Natural Science Foundation of China[41576114] ; Qingdao Innovative Leading Talent Foundation[15-10-3-15-(39)-zch] ; Qingdao Science and Technology Achievement Transformation Guidance Plan (Applied Basic Research)[14-2-4-4-jch] ; State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute, China[KF190404]
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	KEAI PUBLISHING LTD
WOS记录号	WOS:000640516900020
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/170820]
专题	海洋研究所_海洋腐蚀与防护研究发展中心
通讯作者	Chen, Zhuoyuan
作者单位	1.Chinese Acad Sci, Ctr Ocean Megasci, 7 Nanhai Rd, Qingdao 266071, Peoples R China 2.Pilot Natl Lab Marine Sci & Technol Qingdao, Open Studio Marine Corros & Protect, 1 Wenhai Rd, Qingdao 266237, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, 7 Nanhai Rd, Qingdao 266071, Peoples R China 4.Luoyang Ship Mat Res Inst, State Key Lab Marine Corros & Protect, Wenhai Rd, Qingdao 266237, Peoples R China
推荐引用方式 GB/T 7714	Li, Jiarun,Chen, Zhuoyuan,Jing, Jiangping,et al. Effect of yttrium modification on the corrosion behavior of AZ63 magnesium alloy in sodium chloride solution[J]. JOURNAL OF MAGNESIUM AND ALLOYS,2021,9(2):613-626.
APA	Li, Jiarun,Chen, Zhuoyuan,Jing, Jiangping,&Hou, Jian.(2021).Effect of yttrium modification on the corrosion behavior of AZ63 magnesium alloy in sodium chloride solution.JOURNAL OF MAGNESIUM AND ALLOYS,9(2),613-626.
MLA	Li, Jiarun,et al."Effect of yttrium modification on the corrosion behavior of AZ63 magnesium alloy in sodium chloride solution".JOURNAL OF MAGNESIUM AND ALLOYS 9.2(2021):613-626.