Effect of precipitation on internal friction of AZ91 magnesium alloy

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	Effect of precipitation on internal friction of AZ91 magnesium alloy
	S. W. Liu; H. C. Jiang; X. Y. Li; L. J. Rong
	2010
发表期刊	Transactions of Nonferrous Metals Society of China
ISSN	1003-6326
卷号	20 页码:S453-S457
摘要	The effect of precipitation on the internal friction (IF) of AZ91 magnesium alloy was investigated by using X-ray diffraction (XRD) analysis, scanning electron microscope (SEM) observation, and dynamic mechanical analysis (DMA). Six different states of alloy were prepared by applying different heat treatment processes: as-cast, in-complete solid solution, complete solid solution, micro-precipitation, continuous precipitation and continuous-discontinuous precipitation. It was found that the internal friction of in-completely solid-solutionized, completely solid-solutionized and micro-precipitated specimens showed a similar characteristic, and the grain boundary relaxation is completed depressed due to the Al atoms supersaturated in the alpha-Mg solution. However, a thermal relaxation internal friction peak was observed for continuously precipitated and continuously-discontinuously precipitated specimens at around 438 K and frequency of about 1 Hz, which was attributed to the grain boundaries relaxation. Furthermore, it was found that the relaxation of the beta-Mg(17)Al(12)/alpha-Mg phase interfaces should give its contribution to the background internal friction in the as-cast, continuously precipitated and continuously-discontinuously precipitated specimens.
部门归属	[liu shu-wei; jiang hai-chang; li xiu-yan; rong li-jian] chinese acad sci, inst met res, dept mat special environm, shenyang 110016, peoples r china.;liu, sw (reprint author), chinese acad sci, inst met res, dept mat special environm, shenyang 110016, peoples r china;swliu@imr.ac.cn
关键词	Precipitation Solutionization Isothermal Treatment Aging Internal Friction Mg Behavior
URL	查看原文
WOS记录号	WOS:000280873300031
引用统计	被引频次：7[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31307
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	S. W. Liu,H. C. Jiang,X. Y. Li,et al. Effect of precipitation on internal friction of AZ91 magnesium alloy[J]. Transactions of Nonferrous Metals Society of China,2010,20:S453-S457.
APA	S. W. Liu,H. C. Jiang,X. Y. Li,&L. J. Rong.(2010).Effect of precipitation on internal friction of AZ91 magnesium alloy.Transactions of Nonferrous Metals Society of China,20,S453-S457.
MLA	S. W. Liu,et al."Effect of precipitation on internal friction of AZ91 magnesium alloy".Transactions of Nonferrous Metals Society of China 20(2010):S453-S457.