材料科学
极限抗拉强度
电负性
电阻率和电导率
原子半径
导电体
复合材料
半径
航程(航空)
电导率
韧性
电介质
芯(光纤)
计算机科学
光电子学
电气工程
化学
工程类
有机化学
物理化学
物理
量子力学
计算机安全
作者
Hongtao Zhang,Huadong Fu,Xingqun He,Changsheng Wang,Lei Jiang,Lei Chen,Jun Xie
标识
DOI:10.1016/j.actamat.2020.09.068
摘要
Optimizing two conflicting properties such as mechanical strength and toughness or dielectric constant and breakdown strength of a material has always been a challenge. Here we propose a machine learning approach to dramatically enhancing the combined ultimate tensile strength (UTS) and electric conductivity (EC) of alloys by identifying a set of key features through correlation screening, recursive elimination and exhaustive screening of existing datasets. We demonstrate that the key features responsible for solid solution strengthened conductive Copper alloys are absolute electronegativity, core electron distance, and atomic radius, based on which, we discovered a series of new alloying elements that can significantly improve the combined UTS and EC. The predictions are then validated by experimentally fabricating four new Cu-In alloys which could potentially replace the more expensive Cu-Ag alloys currently used in railway wiring. We show that the same set of key features can be generally applicable to designing a broad range of conductive alloys.
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