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Hexagonal crystal system

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Metal matrix composite

Journal of the Mechanical Behavior of Materials

The paper describes a different condition of pouring temperature by sand and permanent mould to produce A356-6 wt% TiB 2 metal matrix composites by in-situ method salt metal reaction route. The observation of SEM micrographs shows particle distribution of the TiB 2 and it appears in hexagonal shape in Al matrix. The results of X-ray diffraction (XRD) analysis confirmed the formation of those TiB 2 particulates and the results showed TiB 2 particles are homogeneously dispersed throughout the matrix metal. Subsequent structure-property evaluation studies indicated sub-micron size reinforcement of in-situ formed TiB 2 particles with improved physical and mechanical properties as compared to sand and permanent mould of Al-TiB 2 composites. From, the permanent mould Al-TiB 2 composite has an advantage of increase the properties over sand mould Al-TiB 2 composite.

Effect of pouring temperature on A356-TiB2 MMCs cast in sand and permanent moulds by in-situ method