Effects of ECAE temperature and billet orientation on the microstructure, texture evolution and mechanical properties of a Mg-Zn-Y-Zr alloy

CORC > 金属研究所 > 中国科学院金属研究所

	Effects of ECAE temperature and billet orientation on the microstructure, texture evolution and mechanical properties of a Mg-Zn-Y-Zr alloy
	W. N. Tang ; R. S. Chen ; J. Zhou ; E. H. Han
刊名	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
	2009
卷号	499 期号:1-2 页码:404-410
关键词	Magnesium Mg-Zn-Y-Zr alloy Equal channel angular extrusion (ECAE) Texture Mechanical property az31 magnesium alloy channel angular extrusion tensile properties ductility deformation enhancement behavior
ISSN号	0921-5093
中文摘要	Single-pass equal channel angular extrusion (ECAE) experiments of an extruded Mg-Zn-Y-Zr alloy with an intense initial basal texture were performed in two inter-perpendicular billet orientations and at 473 and 623 K. The study was aimed to determine the effects of ECAE temperature and billet orientation on the microstructure, texture evolution and mechanical properties of the ECAEed alloy. It was found that the grain refinement achieved through the single-pass ECAE in the Orient-I billet orientation (the normal direction (ND) of the extruded plate parallel with the ECAE exit direction) was more effective than that in the Orient-II billet orientation (the ND of the extruded plate perpendicular to the ECAE exit direction). The average grain sizes after ECAE at 473 K were much smaller than those after ECAE at 623 K. The pole figures of the alloy ECAEed at 473 K showed that most of the basal planes in the Orient-I and Orient-II samples were inclined about 40 and 35, respectively, with respect to the longitudinal direction of the ECAE extrudate. However, for the alloy ECAEed at 623 K, most of the basal planes were parallel with the longitudinal direction of the ECAE extrudate. It was remarkable that the yield strengths of the alloy ECAEed at 473 K were lower than those at 623 K. The peculiar relationship between ECAE temperature and the mechanical properties of the alloy was ascribed to the texture evolution during ECAE. (C) 2008 Elsevier B.V. All rights reserved.
原文出处	://WOS:000261703300085
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/32325]
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	W. N. Tang,R. S. Chen,J. Zhou,et al. Effects of ECAE temperature and billet orientation on the microstructure, texture evolution and mechanical properties of a Mg-Zn-Y-Zr alloy[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2009,499(1-2):404-410.
APA	W. N. Tang,R. S. Chen,J. Zhou,&E. H. Han.(2009).Effects of ECAE temperature and billet orientation on the microstructure, texture evolution and mechanical properties of a Mg-Zn-Y-Zr alloy.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,499(1-2),404-410.
MLA	W. N. Tang,et al."Effects of ECAE temperature and billet orientation on the microstructure, texture evolution and mechanical properties of a Mg-Zn-Y-Zr alloy".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 499.1-2(2009):404-410.