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MECHANICAL PROPERTIES AROUND REINFORCE PARTICLES IN METAL MATRIX COMPOSITES CHARACTERIZED BY NANOINDENTATION TECHNIQUE |
ZHANG Jishan;LIU Xingjiang;CUI Hua;DUAN Xianjin;CHEN Guoliang (University of Science and Technology Beijing; Beijing 100083) |
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Cite this article:
ZHANG Jishan;LIU Xingjiang;CUI Hua;DUAN Xianjin;CHEN Guoliang (University of Science and Technology Beijing; Beijing 100083). MECHANICAL PROPERTIES AROUND REINFORCE PARTICLES IN METAL MATRIX COMPOSITES CHARACTERIZED BY NANOINDENTATION TECHNIQUE. Acta Metall Sin, 1997, 33(5): 548-556.
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Abstract Spray deposited 2014Al+ 15%SiCp and 18Ni (250) maraging steel+ 10%(Al2O3)p metal matrix composites (MMCs) show an accelerated aging behavior. The aging behavior of the MMCs was evaluated by the nanoindentation technique. It was found that there exists obvious gradient distribution of elastic modulus and microhardness around the reinforcement particles, which is the result of the gradient distribution of the reinforcing precipitates caused by the gradient distribution of the thermal misfit dislocation density. This result may provide the useful information for the more accurate prediction of the aging behavior of the MMCs with age hardnable alloy matrix.
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Received: 18 May 1997
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