Effect of sample size on ductility of metallic glass

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	Effect of sample size on ductility of metallic glass
	F. F. Wu ; Z. F. Zhang ; S. X. Mao ; J. Eckert
刊名	Philosophical Magazine Letters
	2009
卷号	89 期号:3 页码:178-184
关键词	metallic glass sample size ductility deformation forming ability shear bands bulk plasticity deformation temperature strength fracture
ISSN号	0950-0839
中文摘要	With decreasing sample dimension, the compressive plastic strain of a Zr-based metallic glass increases from near zero to as high as 80% without failure. This indicates that macroscopically brittle or ductile deformation behaviour can occur in chemically and structurally identical metallic glass. A concept of critical shear offset is proposed to explain the strong size effect on the enhanced plasticity of metallic glass by taking the shear fracture energy density into account. This finding provides new understanding on the principle that for metallic glass 'smaller is more ductile', even on the macroscopic scale.
原文出处	://WOS:000263932600004
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/32422]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	F. F. Wu,Z. F. Zhang,S. X. Mao,et al. Effect of sample size on ductility of metallic glass[J]. Philosophical Magazine Letters,2009,89(3):178-184.
APA	F. F. Wu,Z. F. Zhang,S. X. Mao,&J. Eckert.(2009).Effect of sample size on ductility of metallic glass.Philosophical Magazine Letters,89(3),178-184.
MLA	F. F. Wu,et al."Effect of sample size on ductility of metallic glass".Philosophical Magazine Letters 89.3(2009):178-184.