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Enhanced superplasticity in friction stir processed Mg-Gd-Y-Zr alloy
Q. Yang; B. L. Xiao; Z. Y. Ma
2013
Source PublicationJournal of Alloys and Compounds
ISSN0925-8388
Volume551Pages:61-66
AbstractFine-grained supersaturated Mg-10Gd-3Y-0.5Zr (GW103) alloy with predominant high-angle grain boundaries (HAGB) was prepared by friction stir processing (FSP). The FSP GW103 alloy was subjected to superplastic investigation at a small temperature range of 400-425 degrees C. Fine beta-Mg-5(Gd,Y) particles precipitated at the grain boundaries during heating before superplastic deformation, and their volume fraction decreased significantly with increasing the temperature from 400 to 425 degrees C. Superplasticity of the FSP GW103 alloy was sensitive to the testing temperature, and a maximum superplasticity of 1110% was achieved at 1 x 10(-3) s(-1) and a medium temperature of 415 degrees C. Grain boundary sliding was identified as the main deformation mechanism in FSP GW103 alloy. The high superplasticity is attributed to the fine grains, high percentage of HAGBs, and a moderate volume fraction of beta particles that precipitated at 415 degrees C. (C) 2012 Elsevier B. V. All rights reserved.
description.department[yang, q. ; xiao, b. l. ; ma, z. y.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. ; xiao, bl (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china. ; blxiao@imr.ac.cn ; zyma@imr.ac.cn
KeywordFriction Stir Processing Magnesium Alloy Precipitation Superplasticity Strain Rate Superplasticity Az61 Magnesium Alloy Mechanical-properties Al-alloy Deformation Microstructure Extrusion Behavior
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Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/71632
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Q. Yang,B. L. Xiao,Z. Y. Ma. Enhanced superplasticity in friction stir processed Mg-Gd-Y-Zr alloy[J]. Journal of Alloys and Compounds,2013,551:61-66.
APA Q. Yang,B. L. Xiao,&Z. Y. Ma.(2013).Enhanced superplasticity in friction stir processed Mg-Gd-Y-Zr alloy.Journal of Alloys and Compounds,551,61-66.
MLA Q. Yang,et al."Enhanced superplasticity in friction stir processed Mg-Gd-Y-Zr alloy".Journal of Alloys and Compounds 551(2013):61-66.
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