Pressure effect on the structural relaxation and glass transition in metallic glasses

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	Pressure effect on the structural relaxation and glass transition in metallic glasses
	H. J. Jin; X. J. Gu; P. Wen; L. B. Wang; K. Lu
	2003
发表期刊	Acta Materialia
ISSN	1359-6454
卷号	51 期号:20 页码:6219-6231
摘要	Two different enthalpy recovery methods were applied to investigate the effects of pressure on structural relaxation and glass transition temperature (T-g) in two metallic glasses (Pd40Ni10Cu30P20 and Zr65Al7.5Cu27.5). The pressure-induced enhancement of T-g (dT(g)/dP) was derived to be 6 K/GPa in Pd40Ni10Cu30P20 glass, while an increment of 50 K/5 GPa was observed in Zr65Al7.5Cu27.5 glass. Activation (formation and migration) volumes of the flow defect were used to interpret the pressure dependence of the structural relaxation and T-g in terms of the free volume model. According to the measured results, the activation volume of relaxation was derived to be 16.7 Angstrom(3) for Pd40Ni10Cu30P20, which is much smaller than that of the polymers. (C) 2003 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
部门归属	chinese acad sci, met res inst, shenyang natl lab mat sci, shenyang 110016, peoples r china. chinese acad sci, inst phys, beijing 100080, peoples r china.;lu, k (reprint author), chinese acad sci, met res inst, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china;lu@imr.ac.cn
关键词	Metallic Glasses Pressure Structural Relaxation Glass Transition Amorphous Pd40ni40p20 Temperature Volume Dynamics Dimethylether Polystyrene Liquids
URL	查看原文
WOS记录号	WOS:000187219700017
引用统计	被引频次：47[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/321006/35869
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. J. Jin,X. J. Gu,P. Wen,et al. Pressure effect on the structural relaxation and glass transition in metallic glasses[J]. Acta Materialia,2003,51(20):6219-6231.
APA	H. J. Jin,X. J. Gu,P. Wen,L. B. Wang,&K. Lu.(2003).Pressure effect on the structural relaxation and glass transition in metallic glasses.Acta Materialia,51(20),6219-6231.
MLA	H. J. Jin,et al."Pressure effect on the structural relaxation and glass transition in metallic glasses".Acta Materialia 51.20(2003):6219-6231.