Research and prospect of laser penetration welding technology and quality control for layered bimetal composites

层状双金属复合材料激光穿透焊工艺及质量控制研究与展望 Research and prospect of laser penetration welding technology and quality control for layered bimetal composites 张小凡 ZHANG Xiaofan 1 first-author 张建勋 ZHANG Jianxun 1 西安交通大学金属材料强度国家重点实验室 西安交通大学金属材料强度国家重点实验室 State Key Laboratory of Metal Material Strength, Xi’an Jiaotong University State Key Laboratory of Metal Material Strength, Xi’an Jiaotong University 基于激光穿透焊的熔池流动行为特征提出的层状双金属复合材料激光穿透焊技术,能实现层状双金属复合材料的一次焊接成形,同时可降低基层金属对复层金属的稀释和对其功能性能的破坏,在提高层状双金属复合材料焊接质量和推广应用等方面具有极大潜力。综述了层状双金属复合材料焊接相关的研究成果,阐明了激光穿透焊技术原理、特点以及工艺条件对焊接接头组织性能的影响规律,并对其未来发展方向进行了展望。 Based on the characteristics of molten pool flow behavior of laser penetration welding, the laser penetration welding technology of layered bimetallic composites is proposed, which can realize the onetime welding forming of layered bimetallic composites, reduce the dilution of base metal to clad metal and damage its functional properties, which has great potential in improving the welding quality of layered bimetallic composites and promoting its application power. In this paper, the research results related to the welding of layered bimetallic composites are reviewed. The principle and characteristics of laser penetration welding technology and the influence of process conditions on the microstructure and properties of welded joints are expounded. The future development direction of laser penetration welding is prospected. 层状双金属 激光穿透焊 Marangoni对流 lamellar bimetallic laser penetration welding Marangoni convection TG456.7 国家自然科学基金面上项目(51875442) 2022-03-08 9 50