Room-temperature ductility and anisotropy of two rolled Mg-Zn-Gd alloys

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	Room-temperature ductility and anisotropy of two rolled Mg-Zn-Gd alloys
	H. Yan; R. S. Chen; E. H. Han
	2010
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	527 期号:15 页码:3317-3322
摘要	To develop new magnesium alloy sheets with high formability at room temperature, the microstructure, texture, ductility and anisotropy of rolled EMg-1%Zn-1%Gd and Mg-2%Zn-1%Gd sheets were investigated. The microstructures were characterized as fully recrystallized grains with a large amount of homogeneously distributed fine particles in the matrix. The sheets exhibit an excellent ultimate elongation of nearly 36% and an uniform elongation greater than 15%. The Mg-1%Zn-1%Gd sheet has a random basal texture and the basal pole is tilted by about 30 from the normal direction towards the transverse direction. The planar anisotropy is shown to be as low as 0. The flow curves of the two Mg-Zn-Gd alloys display an abrupt yielding with a remarkable linear hardening at high strain rate after a plastic strain of roughly 3%. The majority of grains in the tilted texture have an orientation favorable for both basal slip and tensile twining because of a high Schmid factor. The low planar anisotropy, the large uniform elongations and the high strain-hardening rate observed in the Mg-Zn-Gd sheets imply excellent room temperature formability. (C) 2010 Elsevier B.V. All rights reserved.
部门归属	[yan, h.; chen, r. s.; han, e. h.] chinese acad sci, state key lab corros & protect, inst met res, shenyang 110016, liaoning, peoples r china. [yan, h.] chinese acad sci, grad univ, beijing 100049, peoples r china.;chen, rs (reprint author), chinese acad sci, state key lab corros & protect, inst met res, 62 wencui rd, shenyang 110016, liaoning, peoples r china;rschen@imr.ac.cn
关键词	Magnesium Alloys Texture Rolling Sheets Ductility Anisotropy Strain Hardening Az31 Magnesium Alloy Tensile Ductility Stretch Formability Texture Development Deformation Enhancement Extrusion Sheets Improvement Strength
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WOS记录号	WOS:000277758000003
引用统计	被引频次：127[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/321006/31621
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. Yan,R. S. Chen,E. H. Han. Room-temperature ductility and anisotropy of two rolled Mg-Zn-Gd alloys[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2010,527(15):3317-3322.
APA	H. Yan,R. S. Chen,&E. H. Han.(2010).Room-temperature ductility and anisotropy of two rolled Mg-Zn-Gd alloys.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,527(15),3317-3322.
MLA	H. Yan,et al."Room-temperature ductility and anisotropy of two rolled Mg-Zn-Gd alloys".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 527.15(2010):3317-3322.