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研究了稀土元素钆（Ｇｄ） 对Ｔｉ４４ａｔ％ Ａｌ 二元合金组织和晶粒尺寸的影响。实验结果表明：钆明显改变了合金的铸态组织，有效地细化了热处理和热变形后的晶粒尺寸。
The effect of rare earth gadolinium (Gd) on the microstructure and grain size of Ti44at% Al binary alloy was studied. The experimental results show that Gd significantly changes the as-cast microstructure of the alloy and effectively refine the grain size after heat treatment and thermal deformation.