稀土对A356.2铝合金气孔和共晶硅形貌的影响

Effect of Rare Earth on Gas Holes and Eutectic Silicon Shape in A356.2 Al-alloy

研究了稀土对A356.2铝合金显微组织的影响。结果表明:稀土能使铝合金中的气孔尺寸减小,共晶硅由针片状和大块状变为颗粒状。

The effect of rare earth on the microstructure of A356.2 aluminum alloy was studied. The results show that adding rare earth in aluminum alloy can makes the size of gas holes in the alloy reduce, and the shape of eutectic silicon transforme into granule from flakiness and massive.