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研究了Ｙ在Ａｌ－（１－５）％Ｙ，Ａｌ－８％Ｚｎ－（１－５）％Ｙ，Ａｌ－２％Ｍｇ－（１－３）％Ｙ及Ａｌ－８％Ｚｎ－２％Ｍｇ－（０－５）％Ｙ合金中的存在形态及对该合金铸态组织的影响。结果表明，在Ａｌ－Ｙ及Ａｌ－２％Ｍｇ－Ｙ合金中，Ｙ以Ａｌ３Ｙ形态存在；在Ａｌ－８％Ｚｎ－２％Ｍｇ和Ａｌ－８％Ｚｎ合金中以Ｙ１２Ａｌ３Ｚｎ金属间化合物的形态存在于晶界。在Ａｌ－８％Ｚｎ－２％Ｍｇ中，Ｙ的存在还能改变Ｚｎ和Ｍｇ在合金中的分布。
The effect of Y on Al- (1-5)% Y, Al-8% Zn- (1-5)% Y, Al- 2% Mg- (1-3)% Y and Al-8% Zn- 2% Presence of Mg- (0-5)% Y Alloys and Its Effect on Casting Structure of Alloy. The results show that Y exists as Al3Y in Al-Y and Al-2% Mg-Y alloys and Y12Al3Zn intermetallics in Al-8% Zn-2% Mg and Al-8% Zn alloys Yu Jingjie. The presence of Y in Al-8% Zn-2% Mg also changes the distribution of Zn and Mg in the alloy.