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Martensitic transformations: first-principles calculations combined with molecular-dynamics simulations

机译:马氏体转变:第一性原理计算与分子动力学模拟相结合

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摘要

Results are presented of first-principles total-energy calculations and molecular-dynamics simulations of structural transformations in magnetic transition metal alloys like Fe_(1-x)Ni_x. While first-principles calculations allow to identify those structures having the lower total energy, molecular-dynamics simulations can be used to trace out the dependence of the transformation on temperature, composition, concentration of defects etc. We have used the method of the semi-empiric embedded-atom potential in the molecular-dynamics simulations which yields remarkable good results for the structural changes.
机译:给出了第一性原理的总能量计算和分子过渡模拟如Fe_(1-x)Ni_x的磁性过渡金属合金的分子动力学模拟结果。虽然第一性原理计算可以识别出总能量较低的结构,但是分子动力学模拟可以用来追踪转变对温度,成分,缺陷浓度等的依赖性。分子动力学模拟中的经验性嵌入原子势能为结构变化产生了显着的良好结果。

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