Abstract High entropy alloys add a new dimension, atomic-scale randomness and the associated scale-dependent composition fluctuations, to the traditional metallurgical axes of time-temperature-composition-microstructure. Alloy performance is controlled by the energies and motion of defects (dislocations, grain boundaries, vacancies, cracks,...). Randomness at the atomic scale can introduce new length and energy scales that can control defect behavior, and hence control alloy properties. The axis of atomic-scale randomness combined with the huge compositional space in multicomponent alloys thus enables, in tandem with still-valid traditional principles, a new broader alloy design strategy that may help achieve the multi-performance requirements of many engineering applications.

中文翻译：

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使用随机性进行设计：冶金的新维度

摘要 高熵合金为传统的时间-温度-成分-微观结构的冶金轴增加了一个新的维度、原子尺度的随机性和相关的尺度相关的成分波动。合金性能由缺陷（位错、晶界、空位、裂纹等）的能量和运动控制。原子尺度的随机性可以引入新的长度和能量尺度，从而控制缺陷行为，从而控制合金性能。原子尺度随机性轴与多组分合金中巨大的成分空间相结合，因此与仍然有效的传统原则相结合，可以实现一种新的更广泛的合金设计策略，可能有助于实现许多工程应用的多性能要求。