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arXiv 1209.0619cond-mat.mtrl-sciphysics.comp-ph
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金属合金精确嵌入原子法电位的快速生成

Rapid Production of Accurate Embedded-Atom Method Potentials for Metal Alloys

Logan Ward, Anupriya Agrawal, Katharine M. Flores, Wolfgang Windl

摘要:

在合金设计中大规模使用经典分子动力学的最关键限制是合适的原子间相互作用势的可用性。在这项工作中,我们展示了一个简单的程序来生成一个库的准确的二元电位使用已经存在的单元素的潜力,可以很容易地结合起来,形成多组分合金电位。对于Al-Ni,Cu-Au,和Cu-Al-Zr系统,我们表明,这种方法产生的结果可比的准确度合金电位,其中所有部分已被同时拟合,没有额外的计算费用。此外,我们证明适用于结晶和非晶相。

英文摘要:

The most critical limitation to the wide-scale use of classical molecular dynamics for alloy design is the availability of suitable interatomic potentials. In this work, we demonstrate a simple procedure to generate a library of accurate binary potentials using already-existing single-element potentials that can be easily combined to form multi-component alloy potentials. For the Al-Ni, Cu-Au, and Cu-Al-Zr systems, we show that this method produces results comparable in accuracy to alloy potentials where all parts have been fitted simultaneously, without the additional computational expense. Furthermore, we demonstrate applicability to both crystalline and amorphous phases.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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