采用改进分析型嵌入原子方法(MAEAM),对铌、钨晶体的(001)面预熔和熔化过程进行分子动力学模拟.通过计算不同温度的原子位置、层原子密度、层结构因子、径向分布函数等物理量,研究(001)面的微观结构随温度的变化.结果表明,(001)面在低于其完整晶体的熔化温度出现预熔.另外,通过将该面预熔摩尔分数对温度进行拟合发现,可以近似地预测(001)面的预熔过程.
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