IMR OpenIR
Correlative change of corrosion behavior with the microstructure of AZ91 Mg alloy modified with Y additions
R. L.; Zhang Jia, M.; Zhang, L. N.; Zhang, W.; Guo, F.
2015
Source PublicationJournal of Alloys and Compounds
ISSN0925-8388
Volume634Pages:263-271
AbstractMicrostructure characterization of the AZ91 magnesium alloys with or without rare earth element yttrium (Y) has been revealed by SEM, EDS and EPMA. Some Y-rich phases can be found in the magnesium alloys with Y additions. The fraction of beta-Mg17Al12 phase obvious decreases and turns into granular distribution with the increase of Y addition instead of original wet distribution along grain boundaries. The results of the potentiodynamic polarization tests show that the corrosion resistance of AZ91 alloy is improved with appropriate Y additions. But an in-situ observation of 3D digital microscopy for the initial stage of corrosion of the magnesium alloy with 0.9%Y addition shows that Y-rich phases act as cathodic effect and the a phases in the vicinity of them acting as anode are corroded. So the additions of Y have a beneficial effect that can depress the overall corrosion of AZ91 alloy, whereas its harmful effect is related to Y-rich phases because they present the highest Volta potential difference from the adjacent matrix and they can drive galvanic corrosion. (C) 2015 Elsevier B.V. All rights reserved.
description.department[jia, ruiling ; zhang, ming ; zhang, lina ; guo, feng] inner mongolia univ technol, coll mat sci & engn, hohhot 010051, inner mongolia, peoples r china. [zhang, wei] chinese acad sci, inst met res, lab corros & protect, shenyang 110016, peoples r china. ; jia, rl (reprint author), inner mongolia univ technol, coll mat sci & engn, hohhot 010051, inner mongolia, peoples r china. ; jrl014014@163.com
KeywordCorrosion Magnesium Alloy Yttrium Potential Difference Rare-earth-elements Magnesium Alloy Molten-salts Intermetallic Coatings Mechanical-properties Lower Temperature Precipitation Resistance Yttrium Improvement
URL查看原文
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/73828
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
R. L.,Zhang Jia, M.,Zhang, L. N.,et al. Correlative change of corrosion behavior with the microstructure of AZ91 Mg alloy modified with Y additions[J]. Journal of Alloys and Compounds,2015,634:263-271.
APA R. L.,Zhang Jia, M.,Zhang, L. N.,Zhang, W.,&Guo, F..(2015).Correlative change of corrosion behavior with the microstructure of AZ91 Mg alloy modified with Y additions.Journal of Alloys and Compounds,634,263-271.
MLA R. L.,et al."Correlative change of corrosion behavior with the microstructure of AZ91 Mg alloy modified with Y additions".Journal of Alloys and Compounds 634(2015):263-271.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[R. L.]'s Articles
[Zhang Jia, M.]'s Articles
[Zhang, L. N.]'s Articles
Baidu academic
Similar articles in Baidu academic
[R. L.]'s Articles
[Zhang Jia, M.]'s Articles
[Zhang, L. N.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[R. L.]'s Articles
[Zhang Jia, M.]'s Articles
[Zhang, L. N.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.