激光复合冷喷涂技术研究进展

An Overview on Cold Spraying Technology Assisted with Laser Process

冷喷涂是一种基于材料高速撞击产生剧烈塑性变形实现结合的沉积方法,具备加工温度低、沉积效率高、热影响小等优势,已在增材制造、工业关键零部件的修复再制造等领域展现出巨大潜力。冷喷涂复合制造技术是一种新兴技术,其中激光复合冷喷涂是一个重要的方向,近年来得到了越来越多的关注。对激光复合冷喷涂技术研究进展进行回顾和总结,对激光预处理、激光同步复合和激光后处理3种复合方式进行重点阐释。针对每种复合方式,分别从复合原理、复合优势及复合效果3个方面进行总结,对比激光复合冷喷涂技术与单一技术在沉积层微观组织以及性能等方面的差异。通过对激光复合冷喷涂技术最新进展的全面总结和归纳,将为进一步推动激光复合冷喷涂技术的研究和应用提供指导和参考。

Cold spraying is a deposition method based on the bonding resulting from severe plastic deformation caused by high-speed impact of materials.It has advantages such as low processing temperature,high deposition speed,and small thermal impact.It has shown great potential in the fields of material additive manufacturing and repair of damaged industrial key components.In recent years,cold spraying hybrid manufacturing technology is an emerging technology,among which laser hybrid cold spraying is becoming an important direction and has received increasing attention.This review aims to review and summarize the research progress of laser hybrid cold spraying technology,with a focus on three composite methods:laser pretreatment,laser synchronous composite,and laser post treatment.Summarize each composite method from three aspects:composite principle,composite advantages,and composite effect,and compare the differences between laser composite cold spraying technology and a single technology in terms of microstructure and performance of the deposition layer.By comprehensively summarizing the recent progress of laser hybrid cold spraying technology,this review will provide guidance and reference for further promoting the research and application of laser hybrid cold spraying technology.