Fluctuation electron microscopy of Al-based metallic glasses: effects of minor alloying addition and structural relaxation on medium-range structural homogeneity

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	Fluctuation electron microscopy of Al-based metallic glasses: effects of minor alloying addition and structural relaxation on medium-range structural homogeneity
	J. Wen; H. W. Yang; H. Guo; B. Wu; M. L. Sui; J. Q. Wang; E. Ma
	2007
发表期刊	Journal of Physics-Condensed Matter
ISSN	0953-8984
卷号	19 期号:45
摘要	Al-based metallic glasses with relatively high glass-forming ability have been studied using fluctuation electron microscopy (FEM). These glasses exhibited well-defined glass transition and remained fully amorphous throughout the FEM experiments. Peaks were observed in the normalized intensity variance curves, evolving with sample composition and thermal history, while diffraction patterns remained identical. Specifically, minor alloying of Co into the Al85Ni5Y10 glass improved its medium-range homogeneity. This is in accord with, and partly explains, the increase in the glass-forming ability. After annealing of Al85Ni5Y8Co2 below its glass transition temperature, FEM suggests structural homogenization or intensified medium-range fluctuations, depending on the annealing temperature. Such dissolution versus growth of quenched-in heterogeneity accompanying structural relaxation was not detectable using other techniques.
部门归属	chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. johns hopkins univ, dept mat sci & engn, baltimore, md 21218 usa.;wen, j (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china;jqwang@imr.ac.cn ema@jhu.edu
关键词	Supercooled Liquid Region Disordered Materials Order Behavior Crystallization Systems
URL	查看原文
WOS记录号	WOS:000250688700013
引用统计	被引频次：11[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/321006/33899
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. Wen,H. W. Yang,H. Guo,et al. Fluctuation electron microscopy of Al-based metallic glasses: effects of minor alloying addition and structural relaxation on medium-range structural homogeneity[J]. Journal of Physics-Condensed Matter,2007,19(45).
APA	J. Wen.,H. W. Yang.,H. Guo.,B. Wu.,M. L. Sui.,...&E. Ma.(2007).Fluctuation electron microscopy of Al-based metallic glasses: effects of minor alloying addition and structural relaxation on medium-range structural homogeneity.Journal of Physics-Condensed Matter,19(45).
MLA	J. Wen,et al."Fluctuation electron microscopy of Al-based metallic glasses: effects of minor alloying addition and structural relaxation on medium-range structural homogeneity".Journal of Physics-Condensed Matter 19.45(2007).