Precipitation behavior and effect of new precipitated beta phase in AZ80 magnesium alloy

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	Precipitation behavior and effect of new precipitated beta phase in AZ80 magnesium alloy
	W. Tang; E. H. Han; Y. B. Xu; L. Liu
	2006
发表期刊	Transactions of Nonferrous Metals Society of China
ISSN	1003-6326
卷号	16 页码:S1725-S1728
摘要	Granular precipitate that was a new kind Of beta-Mg17Al12 phase found in aged AZ80 wrought Mg alloy at. all aging temperature was studied. The structure and precipitation behavior of this granular beta-Mg17Al12 precipitate were studied by environmental scanning electron microscopy (ESEM) and transmission electron microscopy (TEM). The effect of the granular precipitate on mechanical properties of AZ80 alloy was also studied. The new precipitate that was granular and nucleated both on grain boundaries (GBs) and twin boundaries, has the same crystal structure and lattice parameter as those of the continuous or discontinuous precipitated beta-Mg17Al12. And the nucleation and growth of the granular precipitate are faster than those of the other two precipitates at higher temperatures (above 583 K), but are suppressed at lower temperatures (below 423 K). At lower temperatures, the discontinuous beta-Mg17Al12 Precipitates firstly and the granular beta-Mg17Al12 precipitates after aged more than 40 h. The crack is easily nucleated on the phase boundaries of granular phase and matrix because of the weak binding force. As a result, the strength and ductility of AZ80 Mg alloy are decreased by the granular beta-Mg17Al12 precipitate.
部门归属	chinese acad sci, inst met res, shenyang 110016, peoples r china.;tang, w (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china;wtang@imr.ac.cn
关键词	Magnesium Alloy Az80 Granular Beta-mg17al12 Precipitate Precipitation Behavior Aging Mg-al Alloys Discontinuous Precipitation Chemical Nanoanalysis Morphology Growth
URL	查看原文
WOS记录号	WOS:000244524400110
引用统计	被引频次：5[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/321006/34485
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. Tang,E. H. Han,Y. B. Xu,et al. Precipitation behavior and effect of new precipitated beta phase in AZ80 magnesium alloy[J]. Transactions of Nonferrous Metals Society of China,2006,16:S1725-S1728.
APA	W. Tang,E. H. Han,Y. B. Xu,&L. Liu.(2006).Precipitation behavior and effect of new precipitated beta phase in AZ80 magnesium alloy.Transactions of Nonferrous Metals Society of China,16,S1725-S1728.
MLA	W. Tang,et al."Precipitation behavior and effect of new precipitated beta phase in AZ80 magnesium alloy".Transactions of Nonferrous Metals Society of China 16(2006):S1725-S1728.