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Comparative Study on Corrosion Behavior of Cast and Forged Mg-5Y-7Gd-1Nd-0.5Zr Alloys
Liu Jinhui1,2; Song Yingwei1; Shan Dayong1; Han En-Hou1
Corresponding AuthorSong Yingwei(ywsong@imr.ac.cn)
2018-08-11
Source PublicationACTA METALLURGICA SINICA
ISSN0412-1961
Volume54Issue:8Pages:1141-1149
AbstractMagnesium 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.
KeywordMg alloy cast forged second phase surface film micro-galvanic corrosion
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China
DOI10.11900/0412.1961.2017.00484
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2016YFB0301105] ; National Natural Science Foundation of China[51471174]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000440832400007
PublisherSCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/128963
Collection中国科学院金属研究所
Corresponding AuthorSong Yingwei
Affiliation1.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
Recommended Citation
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.
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