Microstructural evolution and enhanced superplasticity in friction stir processed Mg-Zn-Y-Zr alloy

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	Microstructural evolution and enhanced superplasticity in friction stir processed Mg-Zn-Y-Zr alloy
	G. M. Xie; Z. Y. Ma; L. Geng; R. S. Chen
	2008
发表期刊	Journal of Materials Research
ISSN	0884-2914
卷号	23 期号:5 页码:1207-1213
摘要	The extruded Mg-Zn-Y-Zr plate was subjected to friction stir processing (FSP). FSP resulted in significant breakup and dispersion of bulky W-phase particles and remarkable grain refinement, thereby substartially enhancing superplasticity. Maximum superplasticity of 635% was achieved at 450 degrees C and a relatively high strain rate of 3 x 10(-3) s(-1). By comparison, the as-extruded sample did not exhibit superplasticity. Grain boundary sliding was identified to be the primary deformation mechanism in the FSP Mg-Zn-Y-Zr by superplastic data analyses and surfacial morphology observations. Furthermore, the superplastic deformation kinetics of the FSP Mg-Zn-Y-Zr is significantly faster than that: of equal channel angular pressed (ECAP) magnesium alloys under both as-ECAP and annealing conditions.
部门归属	[xie, g. m.; ma, z. y.; chen, r. s.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [xie, g. m.; geng, l.] harbin inst technol, sch mat sci & engn, harbin 150001, peoples r china.;ma, zy (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china;zyma@imr.ac.cn
关键词	Az91 Magnesium Alloy Quasi-crystalline Particles Strain Rate Superplasticity Mechanical-properties Deformation Behavior Phase Cast Weld
URL	查看原文
WOS记录号	WOS:000255543800004
引用统计	被引频次：28[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/321006/33235
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	G. M. Xie,Z. Y. Ma,L. Geng,et al. Microstructural evolution and enhanced superplasticity in friction stir processed Mg-Zn-Y-Zr alloy[J]. Journal of Materials Research,2008,23(5):1207-1213.
APA	G. M. Xie,Z. Y. Ma,L. Geng,&R. S. Chen.(2008).Microstructural evolution and enhanced superplasticity in friction stir processed Mg-Zn-Y-Zr alloy.Journal of Materials Research,23(5),1207-1213.
MLA	G. M. Xie,et al."Microstructural evolution and enhanced superplasticity in friction stir processed Mg-Zn-Y-Zr alloy".Journal of Materials Research 23.5(2008):1207-1213.