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Influences of Preparation Conditions and Melt Treatment Procedures on Melt Treatment Performance of Al-5Ti-B and Al-10Sr Master Alloys


  The influences of preparation conditions of AI-5Ti-B (as-cast and hot-rolled) and Al-10Sr (as-cast and hot-extruded) and melt treatment procedures on the grain refinement and modification performance of A356 alloy are experimentally studied. For the two master alloys, the 50% reduction is sufficient to meet the demands of the efficient grain refinement and modification of A356 alloy. When AI-5Ti-B is introduced into the melt prior to degassing, the grain refinement efficiency of AI-5Ti-B will be greatly increased due to the better dispersity of TiB2 particles. AI-5Ti-B master alloy is less prone to affect the modification effect of Al-10Sr when they are used together.……