Microstructural Characterization of Long-Period Stacking Ordered Phases in Mg97Zn1Y2 (at.%) Alloy

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	Microstructural Characterization of Long-Period Stacking Ordered Phases in Mg97Zn1Y2 (at.%) Alloy
	X. H. Shao; H. J. Yang; J. T. M. De Hosson; X. L. Ma
	2013
发表期刊	Microscopy and Microanalysis
ISSN	1431-9276
卷号	19 期号:6 页码:1575-1580
摘要	Transmission electron microscopy characterization of two major long-period stacking ordered (LPSO) phases in Mg-Zn-Y alloy, i.e., 18R- and 14H-LPSO are reported. The space group and atomic-scale microstructures of both compounds were determined using a combination of electron diffraction, convergent beam electron diffraction, high-resolution transmission electron microscopy, and Z-contrast scanning transmission electron microscopy. The 18R-LPSO phase is demonstrated to have a point group and space group 3m and R3m (or (3) over barm and R (3) over barm), with the lattice parameter a = 1.112 nm and c = 4.689 nm in a hexagonal coordinate system. The 14H-LPSO phase has a point group 6/mmm and a space group P6(3)/mmc, and the lattice parameter is a = 1.112 nm and c = 3.647 nm. In addition, insertion of extra thin Mg platelets of several atomic layers, results in stacking faults in the LPSO phase. These results may shed some new light on a better understanding of the microstructure and deformation mechanisms of LPSO phases in Mg alloys.
部门归属	[shao, xiaohong ; yang, huajie ; ma, xiuliang] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [shao, xiaohong ; yang, huajie ; de hosson, jeff t. m.] univ groningen, dept appl phys, zernike inst adv mat, nl-9747 ag groningen, netherlands. [shao, xiaohong ; yang, huajie ; de hosson, jeff t. m.] univ groningen, dept appl phys, mat innovat inst m2i, nl-9747 ag groningen, netherlands. ; de hosson, jtm (reprint author), univ groningen, dept appl phys, zernike inst adv mat, nijenborgh 4, nl-9747 ag groningen, netherlands. ; j.t.m.de.hosson@rug.nl ; xlma@imr.ac.cn
关键词	Mg-zn-y Alloy Lpso Phase Space Group Stem Zn-y Alloys Mechanical-properties High-temperature Strength Ceramics Ti3alc2 Faults
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/72493
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. H. Shao,H. J. Yang,J. T. M. De Hosson,et al. Microstructural Characterization of Long-Period Stacking Ordered Phases in Mg97Zn1Y2 (at.%) Alloy[J]. Microscopy and Microanalysis,2013,19(6):1575-1580.
APA	X. H. Shao,H. J. Yang,J. T. M. De Hosson,&X. L. Ma.(2013).Microstructural Characterization of Long-Period Stacking Ordered Phases in Mg97Zn1Y2 (at.%) Alloy.Microscopy and Microanalysis,19(6),1575-1580.
MLA	X. H. Shao,et al."Microstructural Characterization of Long-Period Stacking Ordered Phases in Mg97Zn1Y2 (at.%) Alloy".Microscopy and Microanalysis 19.6(2013):1575-1580.