Effect of Eutectic Reaction Induced by Pr on Microstructure in Semisolid A356 Alloy
Semisolid A356 alloy, which is grain-refined by Pr, was prepared by low superheat pouring. The effects of grain-refined by Pr on the morphology and the grain size of the primary α-Al in semisolid A356 alloy are researched. The results indicate that semisolid A356 alloy with particle-like and rosette-like primary α-Al can be prepared by low superheat pouring from liquid A356 alloy grain-refined by Pr. The grain size and particle morphology of primary α-Al in A356 alloy are markedly improved by 0.3wt% Pr. The refining mechanism of Pr on the morphology and the grain size of the primary α-Al in semisolid A356 alloy were delved.
Helen Zhang and David Jin
Z. Liu et al., "Effect of Eutectic Reaction Induced by Pr on Microstructure in Semisolid A356 Alloy", Advanced Materials Research, Vol. 322, pp. 361-364, 2011