Effects of icosahedral phase formation on the microstructure and mechanical improvement of Mg alloys: A review

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	Effects of icosahedral phase formation on the microstructure and mechanical improvement of Mg alloys: A review
	D. K. Xu; E. H. Han
	2012
发表期刊	Progress in Natural Science-Materials International
ISSN	1002-0071
卷号	22 期号:5 页码:364-385
摘要	Icosahedral phase (I-phase) is a relatively excellent strengthening phase in Mg alloys. Depending on their volume fraction, the yield strength of Mg-Zn-Y-Zr alloys can vary from 150 to 450 MPa at room temperature. Recently, the formation of I-phase has been considered as one of the most effective methods for developing high strength lightweight Mg alloys for automotive and aerospace applications. In this review article, a series of research work about I-phase containing Mg alloys have been systematically investigated including I-phase formation mechanism and their effects on mechanical properties of Mg alloys. Particular emphases have been given to: (1) Structure of I-phase and its orientation relationship with the alpha-Mg matrix. (2) Influence of alloying elements and solidification conditions on I-phase formation. (3) Effects of I-phase on microstructural evolution and mechanical improvement of Mg-Zn-Y-(Zr) alloys. Moreover, the applications of I-phase for the mechanical improvement of other Mg alloys such as AZ91 and super-lightweight Mg-Li alloys are also reviewed. (c) 2012 Chinese Materials Research Society. Production and hosting by Elsevier Ltd. All rights reserved.
部门归属	[xu, d. k.; han, e. h.] chinese acad sci, inst metal res, state key lab corros & protect, shenyang 110016, peoples r china.;han, eh (reprint author), chinese acad sci, inst metal res, state key lab corros & protect, 62 wencui rd, shenyang 110016, peoples r china.;ehhan@imr.ac.cn
关键词	Icosahedral Phase Mg Alloys Mechanical Properties Microstructural Evolution Zn-y Alloys Quasi-crystalline Phase Az31 Magnesium Alloy Channel-angular Extrusion Frank-kasper Phases Dodecahedral Solidification Morphology Fatigue-crack Propagation Local Translational Order Metal-matrix Composites High-cycle Fatigue
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文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60361
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	D. K. Xu,E. H. Han. Effects of icosahedral phase formation on the microstructure and mechanical improvement of Mg alloys: A review[J]. Progress in Natural Science-Materials International,2012,22(5):364-385.
APA	D. K. Xu,&E. H. Han.(2012).Effects of icosahedral phase formation on the microstructure and mechanical improvement of Mg alloys: A review.Progress in Natural Science-Materials International,22(5),364-385.
MLA	D. K. Xu,et al."Effects of icosahedral phase formation on the microstructure and mechanical improvement of Mg alloys: A review".Progress in Natural Science-Materials International 22.5(2012):364-385.