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	Mesofracture of metal matrix composites reinforced by particles of large volume fraction
	Zhou, C.W. ; Yang, W. ; Fang, D.N.
	2010-05-07 ; 2010-05-07
关键词	Theoretical or Mathematical Experimental/ alumina aluminium bending composite material interfaces compressive testing ductile fracture filtration fracture mechanics micromechanics particle reinforced composites stress-strain relations surface cracks surface energy tensile strength voids (solid)/ mesofracture metal matrix composite particle reinforcement pressure less filtration uniaxial tension test compression test three point bending test elastic sphere plastic matrix particle-matrix interface principal stress macroscopic constitutive relation local stress fluctuation stress-strain curve crack growth failure surface composition interfacial energy large volume fraction particles voids Al/sub 2/O/sub 3/-Al/ A8140N Fatigue, embrittlement, and fracture A6220M Fatigue, brittleness, fracture, and cracks A8140L Deformation, plasticity and creep A6220F Deformation and plasticity A6840 Surface energy of solids thermodynamic properties A8170 Materials testing A6170Q Inclusions and voids/ Al2O3-Al/int Al2O3/int Al2/int Al/int O3/int O/int Al2O3/bin Al2/bin Al/bin O3/bin O/bin Al/el
中文摘要	Micro mechanics analysis for metal matrix composites (MMC) reinforced by particles of large volume fraction is pursued in this paper. Particle reinforced Al/sub 2/O/sub 3//Al MMC is made under a pressure-less filtration technique. Samples are tested in uniaxial tension, compression and three-point bending. The composite is modeled as identical elastic spheres linked by columns of elastic perfectly plastic matrix. Damage evolves in three mechanisms: the particle/matrix interface may debond if the interfacial energy release rate reaches a critical value; the ductile matrix may fail if voids expand to a certain degree; and the particle may break if the largest principal stress exceeds its strength. An averaging scheme is used to derive the macroscopic constitutive relation. Two random variables are adopted for the fluctuations of local stresses in particles and along particle/matrix interfaces. The predicted stress-strain curves, crack growth paths, and the composition of failure surfaces compare favorably with the testing data.
语种	英语 ; 英语
出版者	Elsevier ; Netherlands
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/16160]
专题	清华大学
推荐引用方式 GB/T 7714	Zhou, C.W.,Yang, W.,Fang, D.N.. Mesofracture of metal matrix composites reinforced by particles of large volume fraction[J],2010, 2010.
APA	Zhou, C.W.,Yang, W.,&Fang, D.N..(2010).Mesofracture of metal matrix composites reinforced by particles of large volume fraction..
MLA	Zhou, C.W.,et al."Mesofracture of metal matrix composites reinforced by particles of large volume fraction".(2010).

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