Effects of ageing treatment on microstructures and properties of Mg-Gd-Y-Zr alloys with and without Zn additions

IMR OpenIR

	Effects of ageing treatment on microstructures and properties of Mg-Gd-Y-Zr alloys with and without Zn additions
	X. B. Liu; R. S. Chen; E. H. Han
	2008
发表期刊	Journal of Alloys and Compounds
ISSN	0925-8388
卷号	465 期号:1-2 页码:232-238
摘要	Mg-Gd-10-3Y-0.5Zr alloys with and without 1% Zn additions have been investigated using optical microscopy, scanning electron microscope and X-ray diffraction. The microstructures, ageing hardening behaviors and mechanical properties of the two alloys are compared. The extruded-T5 specimens exhibit remarkable age hardening responses during ageing from 200 to 250 degrees C. The highest peak hardness and strength of the two alloys are obtained when they are aged at 200 degrees C. Addition of 1% Zn to Mg-10Gd-3Y-0.5Zr alloy results in the greater magnitude ageing effect and better mechanical properties as well as better heat resistance. Furthermore, secondary ageing is carried out at 200 degrees C following preliminary ageing at 250 degrees C for both Mg-10Gd-3Y-0.5Zr and Mg-10Gd-3Y-1Zn-0.5Zr alloys. The ultimate tensile strength values after secondary ageing are slightly lower compared with the highest strength of the two alloys, but secondary ageing offers a better combination of high strength and ductility. (C) 2007 Elsevier B.V. All rights reserved.
部门归属	[liu, x. b.; chen, r. s.; han, e. h.] chinese acad sci, inst met res, environm corros ctr, shenyang 110016, peoples r china.;chen, rs (reprint author), chinese acad sci, inst met res, environm corros ctr, shenyang 110016, peoples r china;rschen@imr.ac.cn
关键词	Mg-gd-y-zr Alloy Precipitation Ageing Hardening Secondary Ageing Mechanical Properties Precipitation Evolution Strength
URL	查看原文
WOS记录号	WOS:000259980000042
引用统计	被引频次：203[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/321006/32967
专题	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. Effects of ageing treatment on microstructures and properties of Mg-Gd-Y-Zr alloys with and without Zn additions[J]. Journal of Alloys and Compounds,2008,465(1-2):232-238.
APA	X. B. Liu,R. S. Chen,&E. H. Han.(2008).Effects of ageing treatment on microstructures and properties of Mg-Gd-Y-Zr alloys with and without Zn additions.Journal of Alloys and Compounds,465(1-2),232-238.
MLA	X. B. Liu,et al."Effects of ageing treatment on microstructures and properties of Mg-Gd-Y-Zr alloys with and without Zn additions".Journal of Alloys and Compounds 465.1-2(2008):232-238.