Weld fusion property of lotus-type porous copper by laser beam irradiation
Weld fusion property of lotus-type porous copper by laser beam irradiation
复制标题
激光束辐照莲花型多孔铜焊缝熔合性能
DOI：
10.1016/s0921-5093(03)00259-4
复制
发表时间：
2003
期刊：
影响因子：
6.4
通讯作者：
M. Ushio
中科院分区：
文献类型：
--
作者：
T. Murakami;K. Nakata;T. Ikeda;H. Nakajima;M. Ushio
具有沿一个方向排列的长圆柱形孔的莲藕状多孔金属的焊接对于多孔金属的新应用非常重要。在本研究中，首次尝试在焊接速度为1.67-16.7 mm s−1和激光功率范围为2.0-3.2 kW的莲花型多孔金属焊接时，研究了孔生长方向对激光束焊接莲花型多孔铜焊缝熔合区形状的影响。当莲花型铜在与激光束照射的工件表面垂直和平行的孔生长方向上熔化时，观察到焊缝熔化区形状存在显着的各向异性。在垂直方向上，获得了光滑的焊头，但在平行方向上，即使在3.33 mm s−1in焊接速度和3.2 kW激光功率的相同焊接条件下，也仅形成坡口而不是焊头。
Welding of lotus root like porous metals with long cylindrical pores aligned in one direction is important for new applications of porous metals. In this study, an effect of the pore growth direction on the shape of weld fusion zone of lotus-type porous copper by laser beam welding was investigated at a first attempt of the welding of lotus-type porous metals in the welding speed and laser power range of 1.67–16.7 mm s−1and 2.0–3.2 kW, respectively. Significant anisotropy in the shape of weld fusion zone was observed when lotus-type copper melted in the perpendicular and parallel pore growth directions to the surface of work piece, on which the laser beam was irradiated. In the perpendicular direction, smooth weld head was obtained, but in the parallel direction, only a groove was formed instead of the weld head even at the same welding conditions of 3.33 mm s−1in welding speed and 3.2 kW in laser power.