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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
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume650Pages:65-69
AbstractSolid-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.
description.department[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
KeywordMagnesium Alloys W/mg Interface Icosahedral Quasicrystal Phase Transformation Strengthening In Situ Transmission Electron Microscopy
Funding OrganizationNational Natural Science Foundation of China [51171189, 51371178, 51390473]; SYNL [2015RP17]; Liaoning Province [201501701]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/75121
Collection中国科学院金属研究所
Corresponding Authoryangzq@imr.ac.cn
Recommended Citation
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.
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