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Atomic-level description of material strength of α-Fe

机译:α-Fe材料强度的原子级描述

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Considering the current developments in multiscale materials modeling and longstanding interest in the mechanical behavior in Fe, we propose a new atomistic description ofα-Fe which is an improvement over existing models that do not consider explicitly the magnetic interactions. The proposal is to combine a many-body potential fitted to a database of ab-initio electronic structure calculations with a Stoner model treatment of itinerant ferromagnetism. Using selected results on deformation behavior from the literature, we illustrate the kind of material strength studies that can benefit from the new description, as well as other significant applications which are beyond the capabilities of first-principles approach.
机译:考虑到多尺度材料建模的最新发展以及人们对铁的力学行为的长期关注,我们提出了一种新的α-Fe原子描述,它是对现有模型的一种改进,该模型没有明确考虑磁性相互作用。该提议是将适合于从头算电子结构计算的数据库的多体势能与迭代铁磁的斯托纳模型处理相结合。使用文献中有关变形行为的选定结果,我们说明了可以从新描述中受益的材料强度研究的种类以及其他超出第一原理方法能力的重要应用。

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