Solid-state formation of icosahedral quasicrystals at Zn3Mg3Y2/Mg interfaces in a Mg-Zn-Y alloy

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	Solid-state formation of icosahedral quasicrystals at Zn3Mg3Y2/Mg interfaces in a Mg-Zn-Y alloy
	Liu, J. F.; Yang, Z. Q.; Ye, H. Q.; yangzq@imr.ac.cn
	2015
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	650 页码:65-69
摘要	Solid-state formation of Zn6Mg3Y icosahedral quasicrystals was observed at interfaces between Mg and W-Zn3Mg3Y2 crystals in a Mg-Zn-Y alloy by in situ transmission electron microscopy investigations. The quasicrystals were formed at about 593 K which is about 130 K below the peritectic temperature. Thermally driven interdiffusion of atoms across the W/Mg interface firstly produces local regions with Zn:Mg:Y close to 6:3:1 at the surface of W phase particles, where the cuboctahedral packing of atoms in W phase transforms to icosahedral packing through slight rearrangement of atoms, leading to the nucleation and growth of icosahedral clusters. The icosahedral clusters act as nuclei for the growth of icosahedral quasicrystals. Both valence electron concentration and the densest packing of atoms play important roles in the formation of Zn6Mg3Y quasicrystals. Solid-state formation of icosahedral quasicrystals at W/Mg interfaces provide a feasible way to modify the weakly bonded W/Mg interfaces, which is thus believed to be able to improve the magnesium alloy's mechanical properties. (C) 2015 Elsevier B.V. All rights reserved.
部门归属	[liu, j. f. ; yang, z. q. ; ye, h. q.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china
关键词	Magnesium Alloys W/mg Interface Icosahedral Quasicrystal Phase Transformation Strengthening In Situ Transmission Electron Microscopy
资助者	National Natural Science Foundation of China [51171189, 51371178, 51390473]; SYNL [2015RP17]; Liaoning Province [201501701]
收录类别	sci
语种	英语
WOS记录号	WOS:000361519300010
引用统计	被引频次：16[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/321006/75121
专题	中国科学院金属研究所
通讯作者	yangzq@imr.ac.cn
推荐引用方式 GB/T 7714	Liu, J. F.,Yang, Z. Q.,Ye, H. Q.,et al. Solid-state formation of icosahedral quasicrystals at Zn3Mg3Y2/Mg interfaces in a Mg-Zn-Y alloy[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2015,650:65-69.
APA	Liu, J. F.,Yang, Z. Q.,Ye, H. Q.,&yangzq@imr.ac.cn.(2015).Solid-state formation of icosahedral quasicrystals at Zn3Mg3Y2/Mg interfaces in a Mg-Zn-Y alloy.JOURNAL OF ALLOYS AND COMPOUNDS,650,65-69.
MLA	Liu, J. F.,et al."Solid-state formation of icosahedral quasicrystals at Zn3Mg3Y2/Mg interfaces in a Mg-Zn-Y alloy".JOURNAL OF ALLOYS AND COMPOUNDS 650(2015):65-69.