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TECHNICAL PAPERS

Thermal Damage in Particulate-Reinforced Metal Matrix Composites

[+] Author and Article Information
Y. C. Zhou, S. G. Long

Institute of Fundamental Mechanics and Material Engineering, Xiangtan University, Xiangtan, Hunan 411105, P.R. China

Z. P. Duan

Laboratory for Laser and Dynamics Behavior of Materials, CAS, Beijing 100080, P.R. China

T. Hashida

Fracture Research Institute, Tohoku University, Sendai 980-8579, Japan

J. Eng. Mater. Technol 123(3), 251-260 (Jan 16, 2001) (10 pages) doi:10.1115/1.1362675 History: Received May 25, 2000; Revised January 16, 2001
Copyright © 2001 by ASME
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References

Figures

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Original metallograph of SiC particulates reinforced Al matrix composites: (a) type A composites, (b) type B composites
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Reinforcement particle distribution of MMCs: (a) type A composite, (b) type B composites, where z denotes the percent of reinforced particles fraction
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Schematic of specimen configuration with dimensions and notched shape
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SEM of micro-voids in notched-tip region for MMCs: (a) type A composite, (b) type B composites
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The features of macrocrack tip for MMCs: (a) type A composites, (b) type B composite
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Schematic of MMCs failure in three forms: matrix failure as in the form of voids, particulate broken and particle/matrix interface de-cohesion
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Damage level vs laser energy density for different far-field mechanical load for type A composites, where σmaxσσ is the stresses at notched-tip A
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Damage level: (a) damage initiation around notched-tip point A, (b) crack propagation around the center of laser spot B
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Damage evolution for type A MMCs for three coupled parameters (EJmax) with EJ’s and σmax’s dimensions of J/cm2 and MPa, respectively: (a) (10,150), (b) (250,150), (c) (50,150)
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Interfacial shear stress τi: (a) and the maximum axial stress σf in reinforcement particle (b) as a function of EJ for different σmax
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The maximum stress in reinforcement as a function of incident laser beam energy density
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The maximum stress as a function of weight fractions of reinforcement particle

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