论文部分内容阅读
1任务高比强度的弥散硬化铝合金在轻结构中得到广泛应用,对于厚度8 mm左右的这种铝合金板材,采用激光焊在技术上是可行的。但是深熔激光焊接时遇到了无法克服的困难,例如:没有现成的解决问题的技术方案;热裂纹存在影响了结构的可靠性;设备造价高。从焊接冶金和可靠性的角度来看,必须添加焊丝,以消除
1 Task Dispersion-hardened aluminum alloys with high specific strength are widely used in light structures. Laser welding is technically feasible for such aluminum alloy sheets with a thickness of about 8 mm. However, deep-drawn laser welding encountered insurmountable difficulties, for example: there is no ready-made technical solutions to the problem; the existence of hot cracks affect the reliability of the structure; equipment cost is high. From welding metallurgy and reliability point of view, the wire must be added to eliminate it