应用激光, 2015, 35 (4): 467, 网络出版: 2015-12-18
工艺参数对纯镍Ni201激光搭接焊缝成形和力学性能的影响
Effect of Welding Parameters on Formation and Mechanical Properties of Welds during Laser Lap Welding of Industrial Pure Nickel Ni201
激光技术 激光焊接 纯镍Ni201 工艺参数 焊缝成形 力学性能 laser technique laser welding industrial pure nickelNi201 parameters formation mechanical properties
摘要
采用高功率Nd:YAG激光器及焊接机器人对纯镍Ni201薄板进行激光搭接试验。采用光学显微镜、显微硬度计、拉伸试验机、扫描电镜等仪器测试分析焊接接头成形及力学性能, 研究了焊接参数(激光功率和焊接速度)对焊缝成形和力学性能的影响。研究结果表明, 激光功率和焊接速度的合理搭配可以获得良好的焊接接头, 接头硬度分布不均匀, 接头最低拉伸强度达389.5 MPa, 达到母材的92%。激光功率和焊接速度对焊缝宏观形貌及力学性能有较大影响。
Abstract
Laser Lap Welding of industrial pure nickel NI201 was studied by using high power Nd:YAG laser and welding robots. The formation and mechanical properties of welded joints was analyzed by optical microscopes, microhardness tester, tensile testing machine, scanning electron microscopy. The influence of welding parameters on the formation and mechanical properties of joints was studied. From the experimental results, it is found that the fine macro-morphology of lap laser welded joint was appeared. Microhardness is different in different zone of laser lap welding joint, the minimum tensile strength of laser lap welding is 389.5 MPa, which is 92% of the base metal. Furthermore, laser power and welding speed has a great influence on macro profile, formation and mechanical properties.
陈俊科, 石岩, 倪聪, 蒋士春, 刘佳. 工艺参数对纯镍Ni201激光搭接焊缝成形和力学性能的影响[J]. 应用激光, 2015, 35(4): 467. Chen Junke, Shi Yan, Ni Cong, Jiang Shichun, Liu Jia. Effect of Welding Parameters on Formation and Mechanical Properties of Welds during Laser Lap Welding of Industrial Pure Nickel Ni201[J]. APPLIED LASER, 2015, 35(4): 467.
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