采用普适分析型的嵌入原子模型,通过拟合纯元素的晶格常数、空位形成能、结合能和体积弹性模量等,确定了Al、Li、Mg和Ti 4个元素的嵌入原子模型参数.不同元素之间的相互作用势的参数由拟合实验或第一原理计算结果确定.用确定的嵌入原子模型分别计算了由Al,Li、Mg和Ti元素构成的二元系以及三元系中的有序合金化合物的形成焓,计算结果与已有的实验结果和第一原理计算结果符合得比较好.
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