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采用聚焦离子束(FIB)方法制备了合金化热镀锌IF钢横截面TEM试样,研究了镀层中Γ1相显微结构,得到了Γ1相选区电子衍射花样(SADPs).结果表明:在Γ1相选区电子衍射花样中存在超点阵衍射,说明Γ1相是一种具有2倍周期结构的有序金属间化合物,这种结构不同于Γ1单相试样具有的6倍周期的有序结构.

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