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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
Source PublicationJournal of Materials Research
ISSN0884-2914
Volume23Issue:5Pages:1207-1213
AbstractThe 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.
description.department[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
KeywordAz91 Magnesium Alloy Quasi-crystalline Particles Strain Rate Superplasticity Mechanical-properties Deformation Behavior Phase Cast Weld
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Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/33235
Collection中国科学院金属研究所
Recommended Citation
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.
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