Deformation and fracture behaviors of Co-based metallic glass and its composite with dendrites

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	Deformation and fracture behaviors of Co-based metallic glass and its composite with dendrites
	J. T. Fan; Z. F. Zhang; S. X. Mao; B. L. Shen; A. Inoue
	2009
发表期刊	Intermetallics
ISSN	0966-9795
卷号	17 期号:6 页码:445-452
摘要	Microstructures and mechanical properties of Co-based metallic glass with nominal composition of Co(43)Fe(20)Ta(5.5)B(31.5) (at.%) cast at the different cooling rates were investigated. When cooling rate is low enough, some dendritic crystalline phases were in situ precipitated from the glass matrix, forming the Co-based metallic glass composite with dendrites. Macroscopically, the fully amorphous samples often split apart or were broken into some particles, displaying a fragmentation failure mode. The size of particles became larger with the decrease in cooling rate. But, strength reduces slightly. Besides, the composites with dendrites show a small compressive plasticity, plus local melting behaviors with vein-like structure on the fracture surfaces. Furthermore, the effects of cooling rate on microstructures, deformation and fracture behaviors were discussed systemically. It is proposed that the fragmentation mechanism can be attributed to the inherent brittle character and high stress concentrations around the free volume. And the local melting behavior is due to the more receiving elastic energy and local shearing. (C) 2008 Elsevier Ltd. All rights reserved.
部门归属	[fan, j. t.; zhang, z. f.] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. [fan, j. t.] hong kong polytech univ, dept mech engn, hong kong, hong kong, peoples r china. [mao, s. x.] univ pittsburgh, dept mech engn, pittsburgh, pa 15261 usa. [shen, b. l.] chinese acad sci, ningbo inst mat technol & engn, ningbo 315201, zhejiang, peoples r china. [inoue, a.] tohoku univ, inst mat res, sendai, miyagi 9808577, japan.;fan, jt (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china;mmjtfan@polyu.edu.hk zhfzhang@imr.ac.cn
关键词	Glasses Metallic Composite Based On The Metallic Glass Matrix Intermetallics Miscellaneous Deformation Map Fracture Toughness Mechanical Properties At Ambient temperAture Mechanical-properties Plastic-deformation Amorphous-alloys Transition Ductile Damage Brittleness Zones
URL	查看原文
WOS记录号	WOS:000265474200011
引用统计	被引频次：23[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/321006/31883
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. T. Fan,Z. F. Zhang,S. X. Mao,et al. Deformation and fracture behaviors of Co-based metallic glass and its composite with dendrites[J]. Intermetallics,2009,17(6):445-452.
APA	J. T. Fan,Z. F. Zhang,S. X. Mao,B. L. Shen,&A. Inoue.(2009).Deformation and fracture behaviors of Co-based metallic glass and its composite with dendrites.Intermetallics,17(6),445-452.
MLA	J. T. Fan,et al."Deformation and fracture behaviors of Co-based metallic glass and its composite with dendrites".Intermetallics 17.6(2009):445-452.