Precipitation Behavior of In-situ TiB2 Particles in Aluminum Alloy Melt
Effects of reaction temperature and supersaturation on precipitation behavior of TiB2 particles in aluminum alloy melt were experimentally investigated.A model was proposed to describe the precipitation behavior of TiB2 par-ticles in the aluminum alloy melt.The nucleation and growth behavior of TiB2 particles and effects on the size distribu-tion were analyzed.The results indicate that the precipitation behavior and size distribution of TiB2 particles are closely related to the reaction temperature,supersaturation and cooling rate of the melt.Lower reaction temperature and high cooling rate are beneficial to obtain finer TiB2 particles with concentrated distribution.
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