Research of Aluminium Grain Refinement Master Alloy Al-Ti-B-RE
The influence of rare-earth and superheat temperature and holding temperature to refinement effect and master alloy Al-Ti-B-RE phase fabricated conventional casting were studied. The results shows that rare-earth element can improve the morphology, the average size and the distribution of TiAl grain; and enlarge the witting angle between the molten aluminum and TiB2 and majorize refinement effect, yet the effect of superheat temperature and holding temperature were inferior.