Effect of rare earth on morphology and dispersion of TiB2 phase in Al-Ti-B alloy refiner

To investigate the effect of rare earth on size and distribution TiB2 phase in aluminum alloy refiner, Al-5Ti-1B-RE master was fabricated, its microstructure constitutions were investigated by combination first principles calculations experimental investigation. The calculated results reveal that Ce has most effective modification ability due to positive adsorption energy largest charge transfer value compared with other elements. Results investigation indicate addition Al-5Ti-1B alloys can greatly refine particle TiB2, improve particles lead better refinement than without earth. Moreover, best optimization effect, which agrees well results.