Abstract Structure, deformation behavior, and mechanical properties of a refractory Al20Cr10Nb15Ti20V25Zr10 high entropy alloy are reported. In the as-cast state, the alloy had a composite-like hypoeutectic microstructure comprised of a softer primary B2 phase and a harder eutectic mixture consisting of a C14 Laves and the B2 phases. Annealing at 1200 °C retained the composite-like constitution and led to the formation of a small amount of a Zr5Al3-type phase. The annealing also had a positive effect on strength and ductility of the alloy at 22 and 800 °C; compatibility of plastic deformation at 800 °C can be ascribed to the relative softness of the B2 phase. Reasonable agreement was found between the experimental structures and the results of thermodynamic modeling.

中文翻译：

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一种原位难熔Al20Cr10Nb15Ti20V25Zr10高熵合金复合材料的组织和力学性能

摘要 报道了一种难熔Al20Cr10Nb15Ti20V25Zr10 高熵合金的组织、变形行为和力学性能。在铸态时，合金具有类似复合材料的亚共晶显微组织，由较软的初生 B2 相和较硬的共晶混合物组成，该混合物由 C14 Laves 和 B2 相组成。在 1200 °C 下退火保留了类复合结构并导致形成少量 Zr5Al3 型相。退火对合金在 22 和 800 °C 下的强度和延展性也有积极影响；800 °C 塑性变形的相容性可归因于 B2 相的相对柔软度。在实验结构和热力学模型结果之间发现了合理的一致性。