This study investigates the microstructure morphology in a single-track wall of Ti-47Al-2Cr-2Nb alloy produced by direct laser deposition. The as-deposited wall mainly exhibited an alternative-band microstructure containing a dendrite band and α₂/γ lamellar band, which is considered to result from the influence of the heat affected zone. A tailoring method was proposed and alternative-band microstructures with various equiaxed colony fractions, and even nearly fully equiaxed colony microstructures, were successfully obtained.

中文翻译：

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直接激光沉积产生的金属间化合物TiAl合金的组织形成和裁缝

本研究研究了直接激光沉积制备的Ti-47Al-2Cr-2Nb合金单道壁的微观组织形态。所沉积的壁表现出主要含有枝晶带和一个替代带微结构α ₂ / γ层状带，这被认为是从热影响区的影响造成的。提出了一种剪裁方法，成功地获得了具有各种等轴集落分数甚至几乎完全等轴集落微观结构的替代谱带微观结构。