The fracture toughness of bulk metallic glasses

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	The fracture toughness of bulk metallic glasses
	J. Xu ; U. Ramamurty ; E. Ma
刊名	Jom
	2010
卷号	62 期号:4 页码:41200
关键词	ni-cu-be glass/metal laminate composites crack-tip fields 2 oxygen levels mechanical-properties structural relaxation residual-stresses amorphous-alloys plastic-flow brittle transition
ISSN号	1047-4838
中文摘要	Stiffness, strength, and toughness are the three primary attributes of a material, in terms of its mechanical properties. Bulk metallic glasses (BMGs) are known to exhibit elastic moduli at a fraction lower than crystalline alloys and have extraordinary strength. However, the reported values of fracture toughness of BMGs are highly variable; some BMGs such as the Zr-based ones have toughness values that are comparable to some high strength steels and titanium alloys, whereas there are also BMGs that are almost as brittle as silicate glasses. Invariably, monolithic BMGs exhibit no or low crack growth resistance and tend to become brittle upon structural relaxation. Despite its critical importance for the use of BMGs as structural materials, the fracture toughness of BMGs is relatively poorly understood. In this paper, we review the available literature to summarize the current understanding of the mechanics and micromechanisms of BMG toughness and highlight the needs for future research in this important area.
原文出处	://WOS:000276770100004
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/31608]
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	J. Xu,U. Ramamurty,E. Ma. The fracture toughness of bulk metallic glasses[J]. Jom,2010,62(4):41200.
APA	J. Xu,U. Ramamurty,&E. Ma.(2010).The fracture toughness of bulk metallic glasses.Jom,62(4),41200.
MLA	J. Xu,et al."The fracture toughness of bulk metallic glasses".Jom 62.4(2010):41200.