Influence of Melt Holding Treatment on the Microstructure and Properties of AI-Ti-B-RE Refiners
The influence of holding treatment on microstructure and refinement properties of AI-Ti-BRE refiners prepared casting were studied.The results show that optimal holding temperature of Al-Ti -B-RE refiner is 800℃.Rare-earth element can improve the morphology and the distribution of TiAl_3 grain;and enlarge the witting angle between the molten aluminum and TiB_2 phase.