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| State-of-Art Review on Ultrasonic Vibration-Assisted Laser Cladding |
| CHEN Jian 1,2,3, YAO Zhehe 1,2,3, YAO Jianhua 1,2,3, LIU Yan4 |
| (1. Institute of Laser Advanced Manufacturing, Zhejiang University of Technology, Hangzhou 310023, China; 2. Collaborative Innovation Center of High-End Laser Manufacturing Equipment, Hangzhou 310023, China; 3. College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China; 4. Maintenance Company of State Grid Ningxia Electric Power Co., Ltd., Yinchuan 750011, China) |
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Abstract Ultrasonic vibration-assisted laser cladding (ULC), based on the advantages of efficient surface modification and forming of laser cladding, applies ultrasonic energy field to overcome the defects caused by rapid solidification. ULC has become a research hotspot at home and abroad. The research shows that after the application of ultrasonic vibration, the grains of the laser cladding layer are refined and equiaxed grains are able to be formed. Meanwhile, the microcracks and porosity defects are significantly inhibited, and the hardness, wear resistance and oxidation resistance are improved. Combined with the research results of our group in the field of ULC and considering the characteristics of ultrasonic vibration, the research status of ULC technology at home and abroad is reviewed. The principle of ULC technology, the ultrasonic vibration device and ultrasonic applying mode in ULC technology, the microstructure characteristics and performance of ULC cladding layer are analyzed emphatically. Furthermore, the application of ULC technology is prospected.
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2021, 
