超声辅助激光熔覆技术是在激光熔覆技术基础上发展起来的，将超声引入激光熔覆中可以提高激光熔覆件质量。通过在BT20钛合金基体上添加频率为19.56 kHz的超声振动，进行激光熔覆实验，并据此研究超声对激光熔覆过程的作用。结果表明，2.2 W功率的超声振动使得熔覆层的表面平整性良好，内部组织气孔率下降到0.75%，熔覆层晶粒尺寸减小了约42%，α片层长度减小了23.9%，但沉积生长方向的堆垛效率降低了36.7%。

Ultrasonic assisted laser cladding technology is developed on the basis of laser cladding technology, and the technology that ultrasonic is introduced to laser cladding can improve the quality of the cladding layer. The laser cladding experiment is done by adding ultrasound vibration with a frequency of 19.56 kHz on titanium alloy matrix of BT20. Based on the experiment the effects of ultrasound on the laser cladding process is studied. The results show that, under the condition of using 2.2 W ultrasonic vibration, the surface flatness of the cladding layer is good, the porosity rate of internal organization is dropped to 0.75%, the grain size is decreased by about 42%, the α-sheet length is decreased by 23.9%, but the stacking efficiency in the direction of deposition and growth is reduced by 36.7%.