Enhanced superplasticity in friction stir processed Mg-Gd-Y-Zr alloy

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	Enhanced superplasticity in friction stir processed Mg-Gd-Y-Zr alloy
	Q. Yang; B. L. Xiao; Z. Y. Ma
	2013
发表期刊	Journal of Alloys and Compounds
ISSN	0925-8388
卷号	551 页码:61-66
摘要	Fine-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.
部门归属	[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
关键词	Friction Stir Processing Magnesium Alloy Precipitation Superplasticity Strain Rate Superplasticity Az61 Magnesium Alloy Mechanical-properties Al-alloy Deformation Microstructure Extrusion Behavior
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71632
专题	中国科学院金属研究所
推荐引用方式 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.