钛合金叶片的激光沉积修复技术研究

Research on Laser Deposition Repair Technology of Titanium Alloy Blades

航空发动机钛合金叶片服役损坏后较难修复,采用激光沉积技术对钛合金叶片进行深度修复具有重要意义。试验通过选取合理的激光沉积参数,对修复试样进行力学性能测试。结果表明,修复后的钛合金叶片室温拉伸性能、高周疲劳性能均与同批次锻件水平相当,且修复后叶片变形量为0.13~0.37 mm,满足设计要求。

It is difficult to repair the aero-engine titanium alloy blade when it is damaged after the service, so it is important to use the laser deposition technology to deep repair the titanium alloy blade. In this experiment, the mechanical properties of the repaired samples were tested by selecting reasonable laser deposition parameters. The results show that the room temperature tensile properties and the high fatigue properties of the repaired blades are comparable to those of the same batch of forgings, and the deformation of the repaired blades is 0.13-0.37 mm, which meets the design requirements.