Failure of SiC particulate-reinforced metal matrix composites induced by laser thermal shock

doi:10.1007/s11661-998-0149-3

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	Failure of SiC particulate-reinforced metal matrix composites induced by laser thermal shock
	Zhou YC(周益春); Duan ZP(段祝平); Yang QB; Zhou, YC (reprint author), Xiangtan Univ, Dept Phys, Xiangtan 411105, Peoples R China.
发表期刊	Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science
	1998
卷号	29 期号:2 页码:685-692
ISSN	1073-5623
摘要	Thermal failure of SiC particulate-reinforced 6061 aluminum alloy composites induced by both laser thermal shock and mechanical load has been investigated. The specimens with a single-edge notch were mechanically polished to 0.25 mm in thickness. The notched-tip region of the specimen is subjected to laser beam rapid heating. In the test, a pulsed Nd:glass laser beam is used with duration 1.0 ms or 250 mu s, intensity 15 or 70 kW/cm(2), and spot size 5.0 mm in diameter. Threshold intensity was tested and fracture behavior was studied. The crack-tip process zone development and the microcrack formation were macroscopically and microscopically observed. It was found that in these materials, the initial crack occurred in the notched-tip region, wherein the initial crack was induced by either void nucleation, growth, and subsequent coalescence of the matrix materials or separation of the SiC particulate-matrix interface. It was further found that the process of the crack propagation occurred by the fracture of the SiC particulates.
学科领域	力学
DOI	10.1007/s11661-998-0149-3
收录类别	SCI
语种	英语
WOS记录号	WOS:000072223600028
关键词[WOS]	ALUMINUM-ALLOY ; FRACTURE-BEHAVIOR ; STRENGTH ; STRESS ; CRACK ; RATES ; SIZE
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/17515
专题	力学所知识产出(1956-2008)
通讯作者	Zhou, YC (reprint author), Xiangtan Univ, Dept Phys, Xiangtan 411105, Peoples R China.
推荐引用方式 GB/T 7714	Zhou YC,Duan ZP,Yang QB,et al. Failure of SiC particulate-reinforced metal matrix composites induced by laser thermal shock[J]. Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science,1998,29,2,:685-692.
APA	周益春,段祝平,Yang QB,&Zhou, YC .(1998).Failure of SiC particulate-reinforced metal matrix composites induced by laser thermal shock.Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science,29(2),685-692.
MLA	周益春,et al."Failure of SiC particulate-reinforced metal matrix composites induced by laser thermal shock".Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science 29.2(1998):685-692.

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