Effects of tungsten fiber on failure mode of Zr-based bulk metallic glassy composite

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	Effects of tungsten fiber on failure mode of Zr-based bulk metallic glassy composite
	H. Zhang ; Z. F. Zhang ; Z. G. Wang ; K. Q. Qiu ; H. F. Zhang ; Q. S. Zang
刊名	Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science
	2006
卷号	37A 期号:8 页码:2459-2469
关键词	supercooled liquid region phase dendrite dispersions fatigue-crack propagation ni-cu-be mechanical-properties matrix composites deformation-behavior fracture-toughness ductile dendrites amorphous-alloys
ISSN号	1073-5623
中文摘要	The authors systematically investigated the effects of tungsten fiber on failure mode as well as deformation and fracture mechanisms in tungsten fiber-reinforced Zr41.25Ti13.75Ni10Cu12.5Be22.5 bulk metallic glassy composite under uniaxial compression at room and high temperatures. At room temperature, the failure mode of the composite changes from shear fracture to longitudinal splitting failure with increasing fiber volume fraction. Similar to the observations in monolithic metallic glasses, the shear fracture angle of the composite is approximately equal to 39 similar to 40 deg, indicating that the Mohr-Coulomb criterion is suitable to give the critical shear fracture condition of the composite. When the compression tests were performed below the glass transition temperature of Zr41.25Ti13.75Ni10Cu12.5Be22.5 metallic glass T-g, the deformation behavior of the composite strongly depends on the strain rates and the test temperature, which is quite similar to the deformation behavior of monolithic metallic glasses in the supercooled liquid region. The corresponding failure mode of the composite changes from shear or splitting fracture to bending failure with decreasing strain rate or increasing test temperature. The failure modes at the temperature near Tg are mainly controlled by the metallic glass matrix due to the decrease in its viscosity at high temperature. Based on these multiple failure modes, the effects of test temperature and tungsten fiber volume fraction on deformation and fracture mechanisms are summarized.
原文出处	://WOS:000239525900013
公开日期	2012-04-14
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/34687]
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	H. Zhang,Z. F. Zhang,Z. G. Wang,et al. Effects of tungsten fiber on failure mode of Zr-based bulk metallic glassy composite[J]. Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,2006,37A(8):2459-2469.
APA	H. Zhang,Z. F. Zhang,Z. G. Wang,K. Q. Qiu,H. F. Zhang,&Q. S. Zang.(2006).Effects of tungsten fiber on failure mode of Zr-based bulk metallic glassy composite.Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,37A(8),2459-2469.
MLA	H. Zhang,et al."Effects of tungsten fiber on failure mode of Zr-based bulk metallic glassy composite".Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science 37A.8(2006):2459-2469.