The microstructure, phase composition, texture, and tensile properties of Ti48Al2Cr2Nb5Ta alloy prepared by laser additive manufacturing (LAM) were all investigated in detail. The microstructure of the alloy is constituted of α₂(Ti₃Al), γ(TiAl), and β/B2 (β ordered to B2) phases, according to the results. The microstructure changes from lamellar structure to lamellar structure divided by massive β/B2 phase when the laser power increases from 1.0 kW to 2.2 kW. Furthermore, when the laser power is 2.2 kW, the content of the β/B2 phase achieves its highest value (9.43%), whereas when the laser power is 1.8 kW, the content of the α₂ phase reaches its maximum value (9.43%). The crystal texture of the γ(111) and α₂(0001) orientations strengthens as laser power increases. Tensile characteristics demonstrate that the 1.4 kW alloy has the best tensile strength and elongation at room temperature and 750 °C, with values of 677 MPa, 651 MPa, and 1.8%, 2.2%, respectively. However, when compared to other alloys, the 1.4 kW alloy's tensile strength and elongation at 850 °C are slightly lower (538 MPa 13%).

详细研究了激光增材制造(LAM)制备的Ti48Al2Cr2Nb5Ta合金的显微组织、相组成、织构和拉伸性能。根据结果​​，合金的显微组织由α ₂ (Ti ₃ Al)、γ(TiAl)和β/B2 (β有序到B2)相构成。当激光功率从 1.0 kW 增加到 2.2 kW 时，微观结构从层状结构变为被大量 β/B2 相划分的层状结构。此外，当激光功率为 2.2 kW 时，β/B2 相的含量达到最大值（9.43%），而当激光功率为 1.8 kW 时，α ₂相的含量达到最大值（9.43%） ）。γ(111) 和α ₂的晶体织构(0001) 取向随着激光功率的增加而增强。拉伸特性表明，1.4 kW 合金在室温和 750 °C 下具有最佳的拉伸强度和伸长率，分别为 677 MPa、651 MPa 和 1.8%、2.2%。然而，与其他合金相比，1.4 kW 合金的抗拉强度和 850 °C 伸长率略低（538 MPa 13%）。