Fabrication and Mechanical Properties of TiC／TiAl Composites
摘要
TiC/TiAl composites with different TiC content were fabricated by rapid heating technique ofspark plasma sintering (SPS). The effect of TiC particles on microstructure and mechanical properties of TiAl matrix was investigated. The results indicate that grain sizes of TiAl matrix decrease and mechanical properties are improved because of the addition of TiC particles. The composites display a 26.8% increase in bending strength when10wt% TiC is added and 43.8% improvement in fracture toughness when 5 wt % TiC is added compared to valuesof TiC-free materials. Grain-refinement and dispersion-strengthening were the main strengthening mechanism. Theimprovement of fracture toughness was due to the deflexion of TiC particles to the crack.
引用本文（GB/T 7714）
YUEYun-long, GONGYan-sheng, WUHai-tao, 等. Fabrication and Mechanical Properties of TiC／TiAl Composites[J]. Acta Scientiarum Naturalium Universitatis Sunyatseni, 2004.
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