Comparative Study on Corrosion Behavior of Cast and Forged Mg-5Y-7Gd-1Nd-0.5Zr Alloys

doi:10.11900/0412.1961.2017.00484

CORC > 金属研究所 > 中国科学院金属研究所

	Comparative Study on Corrosion Behavior of Cast and Forged Mg-5Y-7Gd-1Nd-0.5Zr Alloys
	Liu Jinhui 1,2; Song Yingwei 1; Shan Dayong 1; Han En-Hou 1
刊名	ACTA METALLURGICA SINICA
	2018-08-11
卷号	54 期号:8 页码:1141-1149
关键词	Mg alloy cast forged second phase surface film micro-galvanic corrosion
ISSN号	0412-1961
DOI	10.11900/0412.1961.2017.00484
通讯作者	Song Yingwei(ywsong@imr.ac.cn)
英文摘要	Magnesium and its alloys have become increasingly attractive in the automotive, 3C products and aerospace industries because of their advantages such as low density and high specific strength. In recent years, rare earth-Mg alloys have attracted much attention due to their high mechanical properties at room and elevated temperatures. Adjusting the microstructures by deformation treatment is a common method to improve the mechanical properties of Mg alloys. The microstructure especially the size, volume fraction and distribution of second phases in rare earth-Mg alloys will be changed during deformation treatment, which has a great effect on the corrosion resistance of Mg alloys. However, the studies on the effect of deformation treatment on the corrosion resistance of rare earth-Mg alloys are far away from sufficient. In this work, the corrosion behavior of cast and forged Mg-5Y-7Gd-1Nd-0.5Zr ( EW75) alloys were studied by using SEM, XRD, mass loss measurements and electrochemical tests. The results indicate that the second phases are distributed along the grain boundaries of cast and forged EW75 alloys. Meanwhile, the second phases in forged EW75 alloy are finer and lower volume fraction than that in cast EW75 alloy. The micro-galvanic corrosion of the forged EW75 alloy is weaker in comparison with the cast EW75 alloy owing to the smaller size and lower volume fraction of second phases as well more compact surface film, resulting in the better corrosion resistance.
资助项目	National Key Research and Development Program of China[2016YFB0301105] ; National Natural Science Foundation of China[51471174]
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000440832400007
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/128962]
专题	金属研究所_中国科学院金属研究所
通讯作者	Song Yingwei
作者单位	1.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Liaoning, Peoples R China 2.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Liu Jinhui,Song Yingwei,Shan Dayong,et al. Comparative Study on Corrosion Behavior of Cast and Forged Mg-5Y-7Gd-1Nd-0.5Zr Alloys[J]. ACTA METALLURGICA SINICA,2018,54(8):1141-1149.
APA	Liu Jinhui,Song Yingwei,Shan Dayong,&Han En-Hou.(2018).Comparative Study on Corrosion Behavior of Cast and Forged Mg-5Y-7Gd-1Nd-0.5Zr Alloys.ACTA METALLURGICA SINICA,54(8),1141-1149.
MLA	Liu Jinhui,et al."Comparative Study on Corrosion Behavior of Cast and Forged Mg-5Y-7Gd-1Nd-0.5Zr Alloys".ACTA METALLURGICA SINICA 54.8(2018):1141-1149.