Internal friction peak associated with dislocations in Mg-0.6%Zr alloy

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	Internal friction peak associated with dislocations in Mg-0.6%Zr alloy
	S. W. Liu; X. F. Hu; H. C. Jiang; X. Y. Li; L. J. Rong
	2011
发表期刊	Acta Metallurgica Sinica-English Letters
ISSN	1006-7191
卷号	24 期号:5 页码:335-342
摘要	The internal friction (IF) of Mg-0.6%Zr alloy is measured in the present study and two IF peaks of (P(1) (97 degrees C, 1 Hz) and P(2) (230 degrees C, 1Hz)) are found, respectively. It is shown that the novel P(1) peak is frequency independent anal the peak temperature increased with the increase of strain amplitude or heating rate. P(1) peak could be repressed by the reheating-up measurements and represented by heat treatment. The mechanism of P(1) peak is clarified by optical microscope (OM) and transmission electron microscope (TEM) observation, and considered to be caused by the creation and expansion of dislocations during plastic deformation. The P(2) peak is a thermally activated relaxation IF peak, and activation energy is 1.46 eV, which is caused by the relaxation of the grain boundaries in Mg-0.6%Zr alloy.
部门归属	[liu, shuwei; hu, xiaofeng; jiang, haichang; li, xiuyan; rong, lijian] chinese acad sci, inst met res, shenyang 110016, peoples r china.;liu, sw (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china;swliu@imr.ac.cn
关键词	Internal Friction Dislocation Plastic Deformation Grain Boundaries Relaxation Plastic-deformation Ke Peak Magnesium Modulus Mg
URL	查看原文
WOS记录号	WOS:000296935600001
引用统计	被引频次：1[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/321006/30540
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	S. W. Liu,X. F. Hu,H. C. Jiang,et al. Internal friction peak associated with dislocations in Mg-0.6%Zr alloy[J]. Acta Metallurgica Sinica-English Letters,2011,24(5):335-342.
APA	S. W. Liu,X. F. Hu,H. C. Jiang,X. Y. Li,&L. J. Rong.(2011).Internal friction peak associated with dislocations in Mg-0.6%Zr alloy.Acta Metallurgica Sinica-English Letters,24(5),335-342.
MLA	S. W. Liu,et al."Internal friction peak associated with dislocations in Mg-0.6%Zr alloy".Acta Metallurgica Sinica-English Letters 24.5(2011):335-342.