Abstract In this study, we additively manufactured a CrMnFeCoNi/AlCoCrFeNiTi0.5 laminated high-entropy alloy (HEA), with alternating layers of both constituent materials, that exhibits enhanced strength-plasticity synergy during compression (yield strength up to 990 MPa and no complete fracture until 80% strain), surpassing those of monolithic bulk HEAs. The enhanced strength-plasticity synergy originates from heterogenous microstructures of ultra-hard body-centered-cubic equiaxed grains and soft face-centered-cubic columnar grains periodically arranged in the AlCoCrFeNiTi0.5 and CrMnFeCoNi lamellae, respectively. This study demonstrates a feasible and flexible way to design HEAs with heterogenous microstructures and superior mechanical properties.

中文翻译：

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增材制造 CrMnFeCoNi/AlCoCrFeNiTi0.5 叠层高熵合金具有增强的强度-塑性协同作用

摘要 在这项研究中，我们增材制造了 CrMnFeCoNi/AlCoCrFeNiTi0.5 叠层高熵合金 (HEA)，两种材料的交替层，在压缩过程中表现出增强的强度-塑性协同作用（屈服强度高达 990断裂直至 80% 应变），超过了整体散装 HEAs。增强的强度-塑性协同源于分别在 AlCoCrFeNiTi0.5 和 CrMnFeCoNi 片晶中周期性排列的超硬体心立方等轴晶粒和软面心立方柱状晶粒的不均匀微观结构。该研究展示了一种可行且灵活的方法来设计具有异质微观结构和优异机械性能的 HEA。