超音速激光沉积技术:研究现状及发展趋势

Research States and Development Tendency of Supersonic Laser Deposition Technology

超音速激光沉积(SLD)是新近发展起来的一种激光复合制造技术,该技术将激光辐照与冷喷涂相结合,利用高能激光束的热能与高速粒子动能的协同作用,实现了宽范围材料的沉积,并获得了特殊的微观组织和性能。结合本课题组在SLD领域的研究成果,从SLD原理、沉积材料范围、微观组织结构以及性能表征等方面综述了国内外的最新研究进展,从工艺探索、设备开发以及性能评估等方面对SLD技术未来的发展趋势和挑战进行了展望。

Supersonic laser deposition(SLD)is a newly developed laser hybrid manufacturing technology,which combines the advantages of laser irradiation and cold spray.With the synergistic effects of thermal energy from laser irradiation and kinetic energy from high velocity particles impacting,a wider range of materials can be deposited by this technique and unique microstructures and properties can also be obtained.Based on the research results of the authors′team in the field of SLD,the latest research progress at home and abroad from the aspect of technique principle,deposition material range,phase and microstructure,and performance characterization are summarized.And then,the future trend and challenge of SLD technology are prospected from the perspective of process exploration,equipment development and property evaluation.