Al-Zn合金的广泛使用导致大量合金废料的产生.真空蒸馏法可以有效分离合金中的杂质元素.但是,分离效果取决于杂质元素的性能.为了从Al-Zn合金废料中有效分离出杂质元素Zn,本文利用从头算分子动力学方法成功地模拟了Al-10％Zn合金真空下的结构和性能随温度的变化情况.模拟得到了合金在不同温度下的径向分布函数(RDF),配位数(CN),均方位移(MSD),扩散系数(DC)和分波态密度(PDOS).模拟结果表明:随温度升高,Al-10％Zn合金结构有三个相变过程;当合金熔化以后,真空条件下金属锌可以很容易地从液相蒸发到气相;随温度的升高,锌原子的扩散系数和平均电荷具有相同的发展趋势.
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