Abstract In this study, a fine fully lamellar structure was formed with only a stepped-cyclic heat treatment process without hot working. The cast structure before the heat treatment contained large segregation areas and a coarse columnar structure (>1000 μm). Thus, the mechanical properties at room temperature were not ideal. In contrast, the segregation in the microstructures after the heat treatment was mostly removed with the formation of the fine fully lamellar structure (>65 μm). The mechanical properties at room temperature were improved by the effect of the fine fully lamellar. A room temperature tensile test was conducted to evaluate the mechanical properties of the controlled microstructure. As the fully lamellar structure became fine, the yield strength at room temperature increased from 482 MPa to 650 MPa and the total strain increased from 0.3% to 0.71%.

中文翻译：

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无需热加工即可生产用于铸造 γ-TiAl 的精细全层状组织

摘要 在这项研究中，仅通过阶梯循环热处理工艺形成了精细的全层状结构，无需热加工。热处理前的铸造组织含有大的偏析区域和粗大的柱状组织（>1000 μm）。因此，室温下的机械性能并不理想。相比之下，热处理后显微组织中的偏析大部分被去除，形成精细的全层状结构（> 65 μm）。室温下的机械性能通过精细的全层状效应得到改善。进行室温拉伸试验以评估受控微观结构的机械性能。随着全层状结构变得精细，