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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 6    No. 4    December 1996

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PREPARATION OF 6066 Al/SiCP(+Gr) COMPOSITES BY MULTI-LAYER SPRAY DEPOSITION
Chen Zhenhua, Zhang Hao, Chen Gang, Liu Qiulin, Sun Zhangming, Yang Fuliang

Research Institute ofNonequilibrium Materials Science and Technology,Central South University of Technology, Changsha 410083

Abstract:A novel multi-layer spray deposition technology was developed, by which 6066Al/SiCp(+Gr) composites were manufactured. The matrix is of rapid cooling rate and large excess solid solubility. SiC particles distribute uniformly in the matrix with clear interface. Extrusion was conducted to improve the microstructure and mechanical properties. SiC particles can be broken up and rearranged. After T6 heat treatment, the final material shows low porosity and good mechanical properties. The introduction of small amount of graphite particles into the preform can improve the damping property.

 

Key words: spray deposition metal matrix composites SiC particles

ISSN 1672-7029
CN 43-1423/U

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