Salient shear bands and second-phase addition interactions of bulk metallic glass matrix composite

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	Salient shear bands and second-phase addition interactions of bulk metallic glass matrix composite
	K. Q. Qiu; X. F. Wu; A. M. Wang; H. F. Zhang; B. Z. Ding; Z. Q. Hu
	2003
发表期刊	Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science
ISSN	1073-5623
卷号	34A 期号:5 页码:1147-1152
摘要	This article discusses Chatpy impact testing and fracture morphology of the Zr41.25Ti13.75Cu12.5Ni10Be22.5 bulk metallic glass matrix composite with long tungsten fibers.. Energy to failure was measured via the impact test as well as by integrating the compressive stress-strain curves, and compared for various fiber fractions. Failure energy increased with fiber volume fraction by both measures. Observation of fracture surfaces was made by using scanning electron microscopy. The results show that the fracture surface of the unreinforced bulk metallic glass (BMG) exhibits three different regions, i.e., the impact zone, the transition zone, and the ridged zone, which have different morphology. The composites present uneven or jagged morphology on macroscopic scale, while the microstructure exhibits salient shear bands and second-phase addition interactions. Bridge formation between tungsten fibers is interpreted as evidence that the shear band propagation in the matrix is suppressed by the fibers. Furthermore, shear lips were observed for the composites containing over 50 pct, fiber volume fraction, showing a great improvement in toughness.
部门归属	chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. liaoning inst technol, jinzhou 121001, peoples r china.;qiu, kq (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china
关键词	Fatigue-crack Propagation Ni-cu-be Mechanical-properties Fracture-toughness Alloy Tungsten
URL	查看原文
WOS记录号	WOS:000182676700011
引用统计	被引频次：9[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/321006/36004
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	K. Q. Qiu,X. F. Wu,A. M. Wang,et al. Salient shear bands and second-phase addition interactions of bulk metallic glass matrix composite[J]. Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,2003,34A(5):1147-1152.
APA	K. Q. Qiu,X. F. Wu,A. M. Wang,H. F. Zhang,B. Z. Ding,&Z. Q. Hu.(2003).Salient shear bands and second-phase addition interactions of bulk metallic glass matrix composite.Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,34A(5),1147-1152.
MLA	K. Q. Qiu,et al."Salient shear bands and second-phase addition interactions of bulk metallic glass matrix composite".Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science 34A.5(2003):1147-1152.