High temperature deformation and microstructural evolution of Mg-Gd-Y alloys

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	High temperature deformation and microstructural evolution of Mg-Gd-Y alloys
	X. B. Liu ; R. S. Chen ; E. H. Han
刊名	Materials Science and Technology
	2010
卷号	26 期号:10 页码:1213-1219
关键词	Mg-Gd-Y alloy Equal channel angular extrusion High temperature deformation Recrystallisation Microstructure strain-rate superplasticity severe plastic-deformation az61 magnesium alloy grain-size extrusion zk60 behavior metals ecap flow
ISSN号	0267-0836
中文摘要	The high temperature deformation behaviours of Mg-10Gd-3Y (GW103) alloys processed by extrusion and extrusion followed by equal channel angular extrusion (ECAE) were investigated and compared, and the maximum tensile elongations of 390 and 490% were obtained in the two specimens respectively. The different processing routes led to different microstructural features, and the extrusion followed by ECAE (EX-ECAE) specimens usually showed higher elongations than as extruded ones under the same deformation conditions. The deformation mechanisms of GW103 alloys were analysed in terms of the strain rate sensitivity exponent, microstructural evolution and activation energy. The high elongations of as extruded specimens were attributed to the combined effects of dynamic recrystallisation and grain boundary sliding, which was accompanied by lattice diffusion. However, grain boundary sliding controlled by the combination of grain boundary and lattice diffusions was dominant in the EX-ECAE specimens.
原文出处	://WOS:000283159500009
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/31315]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	X. B. Liu,R. S. Chen,E. H. Han. High temperature deformation and microstructural evolution of Mg-Gd-Y alloys[J]. Materials Science and Technology,2010,26(10):1213-1219.
APA	X. B. Liu,R. S. Chen,&E. H. Han.(2010).High temperature deformation and microstructural evolution of Mg-Gd-Y alloys.Materials Science and Technology,26(10),1213-1219.
MLA	X. B. Liu,et al."High temperature deformation and microstructural evolution of Mg-Gd-Y alloys".Materials Science and Technology 26.10(2010):1213-1219.