Abstract A direct laser deposition processing method was applied to construct compositional and microstructural libraries of AlxCoCrFeNi in an efficient and high-throughput manner. Among the compositions (x = 0.51–1.25) and quench rates (26–6400 K/s) studied, most of the laser deposited alloys exhibit a cellular microstructure, similar to the cast materials. The microstructural feature sizes were found to follow a power law relationship with the quench rate. The dependence of the microhardness on microstructural length scale was also investigated and observed to follow a Hall-Petch relationship. This study indicates that laser processing is an effective method for rapidly and efficiently evaluating multiprincipal element alloys and their microstructures.

中文翻译：

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激光加工作为一种高通量方法研究多主要元素合金的微观结构-加工-性能关系

摘要 采用直接激光沉积加工方法，以高效、高通量的方式构建了 AlxCoCrFeNi 的成分和微观结构库。在研究的成分 (x = 0.51–1.25) 和淬火速率 (26–6400 K/s) 中，大多数激光沉积合金表现出与铸造材料相似的蜂窝状微观结构。发现微观结构特征尺寸与淬火速率遵循幂律关系。还研究了显微硬度对显微结构长度尺度的依赖性，并观察到遵循霍尔-佩奇关系。该研究表明，激光加工是一种快速有效地评估多主元素合金及其微观结构的有效方法。