Excellent room-temperature ductility and formability of rolled Mg-Gd-Zn alloy sheets

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	Excellent room-temperature ductility and formability of rolled Mg-Gd-Zn alloy sheets
	D. Wu ; R. S. Chen ; E. H. Han
刊名	Journal of Alloys and Compounds
	2011
卷号	509 期号:6 页码:2856-2863
关键词	Magnesium alloys Rolled sheet Non-basal texture Ductility Formability magnesium-based alloys stretch formability mechanical-properties tensile ductility texture deformation enhancement anisotropy recrystallization
ISSN号	0925-8388
中文摘要	In order to develop new magnesium alloy sheets with high formability at room temperature, the microstructure, texture, ductility, and stretch formability of rolled Mg-2%Gd-1%Zn and Mg-3%Gd-1%Zn sheets were investigated. The microstructures of these rolled sheets consist of fine recrystallized grains with a large amount of homogeneously distributed tiny particles in the matrix. The basal plane texture intensity is quite low and the basal pole is tilted by about 30 from the normal direction toward both the rolling direction and the transverse direction. The sheets exhibit an excellent ultimate elongation of similar to 50% and a uniform elongation greater than 30%, and the Erichsen values reach similar to 8 at room temperature. The flow curves of the two Mg-Gd-Zn alloys sheets display a remarkable linear hardening after an obvious yield point. The majority of the grains in the tilted texture have an orientation favorable for both basal slip and tensile twinning because of a high Schmid factor. The excellent stretch formability at room temperature can be attributed to the non-basal texture and low texture intensity, which led to the following characteristics: a lower 0.2% proof stress, a larger uniform elongation, a smaller Lankford value and a larger strain hardening exponent. Crown Copyright (C) 2010 Published by Elsevier B.V. All rights reserved.
原文出处	://WOS:000287058100045
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/30773]
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	D. Wu,R. S. Chen,E. H. Han. Excellent room-temperature ductility and formability of rolled Mg-Gd-Zn alloy sheets[J]. Journal of Alloys and Compounds,2011,509(6):2856-2863.
APA	D. Wu,R. S. Chen,&E. H. Han.(2011).Excellent room-temperature ductility and formability of rolled Mg-Gd-Zn alloy sheets.Journal of Alloys and Compounds,509(6),2856-2863.
MLA	D. Wu,et al."Excellent room-temperature ductility and formability of rolled Mg-Gd-Zn alloy sheets".Journal of Alloys and Compounds 509.6(2011):2856-2863.