Stress-life fatigue behavior and fracture-surface morphology of a Cu-based bulk-metallic glass

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	Stress-life fatigue behavior and fracture-surface morphology of a Cu-based bulk-metallic glass
	M. Freels; P. K. Liaw; G. Y. Wang; Q. S. Zhang; Z. Q. Hu
	2007
发表期刊	Journal of Materials Research
ISSN	0884-2914
卷号	22 期号:2 页码:374-381
摘要	The stress-life fatigue behavior and fracture morphology of a (CU60Zr30Ti10)(99)Sn-1 bulk-metallic glass alloy was investigated under both three-point and four-point bending conditions. For all stress levels tested, the fatigue lifetimes tended to be higher for the three-point loading condition. The fatigue endurance limits (defined as 107 cycles without failure), based on the applied stress range, for three-point and four-point loading conditions were approximately 475 MPa and 350 MPa, respectively. All fracture surfaces were found to be composed of four main regions: a crack-initiation site, a stable crack-growth region, an unstable fast-fracture region, and a melting region. Finely spaced parallel marks, similar to fatigue striations found in crystalline alloys, oriented somewhat perpendicular to the direction of crack propagation were observed in the stable crack-growth region. Analyses of these marks found that their spacing increased with increasing stress-intensity-factor range. Damage was found to initiate from preexisting defects present on or near the surface.
部门归属	univ tennessee, dept mat sci & engn, knoxville, tn 37996 usa. chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;liaw, pk (reprint author), univ tennessee, dept mat sci & engn, knoxville, tn 37996 usa;pliaw@utk.edu
关键词	Crack Propagation Amorphous Metal Alloys Deformation Mechanisms Composite
URL	查看原文
WOS记录号	WOS:000244210800016
引用统计	被引频次：28[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/321006/33538
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	M. Freels,P. K. Liaw,G. Y. Wang,et al. Stress-life fatigue behavior and fracture-surface morphology of a Cu-based bulk-metallic glass[J]. Journal of Materials Research,2007,22(2):374-381.
APA	M. Freels,P. K. Liaw,G. Y. Wang,Q. S. Zhang,&Z. Q. Hu.(2007).Stress-life fatigue behavior and fracture-surface morphology of a Cu-based bulk-metallic glass.Journal of Materials Research,22(2),374-381.
MLA	M. Freels,et al."Stress-life fatigue behavior and fracture-surface morphology of a Cu-based bulk-metallic glass".Journal of Materials Research 22.2(2007):374-381.