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Ultimate Strength of Metals
Physical Review Letters ( IF 8.6 ) Pub Date : 2020-03-25 , DOI: 10.1103/physrevlett.124.125501
Michael Chandross , Nicolas Argibay

We present a theoretical model that predicts the peak strength of polycrystalline metals based on the activation energy (or stress) required to cause deformation via amorphization. Building on extensive earlier work, this model is based purely on materials properties, requires no adjustable parameters, and is shown to accurately predict the strength of four exemplar metals (fcc, bcc, and hcp, and an alloy). This framework reveals new routes for design of more complex high-strength materials systems, such as compositionally complex alloys, multiphase systems, nonmetals, and composite structures.

中文翻译:

金属的极限强度

我们提出了一种理论模型,该模型基于通过非晶化导致变形所需的活化能(或应力)来预测多晶金属的峰值强度。在广泛的早期工作的基础上,此模型仅基于材料属性,不需要可调整的参数,并且可以准确预测四种示例性金属(fcc,bcc和hcp以及合金)的强度。该框架揭示了设计更复杂的高强度材料系统的新途径,例如组成复杂的合金,多相系统,非金属和复合结构。
更新日期:2020-03-26
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