The fracture toughness of bulk metallic glasses

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	The fracture toughness of bulk metallic glasses
	J. Xu; U. Ramamurty; E. Ma
	2010
发表期刊	Jom
ISSN	1047-4838
卷号	62 期号:4 页码:41200
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.
部门归属	[xu, jian] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. [ramamurty, upadrasta] indian inst sci, dept mat engn, bangalore, karnataka, india. [ma, evam] johns hopkins univ, dept mat sci & engn, baltimore, md 21218 usa.;xu, j (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china;jianxu@imr.ac.cn ramu@materials.iisc.ernet.in ema@jhu.edu
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
URL	查看原文
WOS记录号	WOS:000276770100004
引用统计	被引频次：146[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/321006/31608
专题	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.