Shear stability of metallic glasses

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	Shear stability of metallic glasses
	F. F. Wu ; W. Zheng ; S. D. Wu ; Z. F. Zhang ; J. Shen
刊名	International Journal of Plasticity
	2011
卷号	27 期号:4 页码:560-575
关键词	Metallic glass Size effect Elastic energy density Mechanical properties cryogenic temperatures intrinsic plasticity superhigh strength tensile ductility amorphous-alloys forming ability fracture size deformation band
ISSN号	0749-6419
中文摘要	The effect of sample size on the shear deformation and compressive plasticity of different metallic glasses were investigated. The experimental results showed that the deformation and fracture behaviors of samples prepared from chemically identical Zr-, Ti-, Fe-, or Mg-based metallic glass ingots were strongly dependent on the sample size and machine stiffness, and a super-high compressive plasticity was achieved in the Zr-based metallic glasses with sample size of 1.0 mm in width. It is also found that the sample size can significantly influence the density of elastic energy dissipated in the shear band: with sample size decreasing and machine stiffness increasing, the density of the elastic energy dissipated in the shear band of metallic glasses is prominently decreased, thus the shear deformation turns to be more stable, resulting in the improvement of plasticity in ductile metallic glasses and the transition from fragmentation fracture to shear fracture in brittle metallic glasses. This finding is important for the potential applications of the present metallic glasses and for designing new metallic glasses with better mechanical properties. (C) 2010 Elsevier Ltd. All rights reserved.
原文出处	://WOS:000288980700006
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/30774]
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,W. Zheng,S. D. Wu,et al. Shear stability of metallic glasses[J]. International Journal of Plasticity,2011,27(4):560-575.
APA	F. F. Wu,W. Zheng,S. D. Wu,Z. F. Zhang,&J. Shen.(2011).Shear stability of metallic glasses.International Journal of Plasticity,27(4),560-575.
MLA	F. F. Wu,et al."Shear stability of metallic glasses".International Journal of Plasticity 27.4(2011):560-575.