Overlap conduction laser welding of aluminium to steel
Overlap conduction laser welding of aluminium to steel
复制标题
DOI：
10.1007/s00170-012-4512-6
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
S. Meco;G. Pardal;S. Ganguly;R. Miranda;L. Quintino;S. Williams
中科院分区：
文献类型：
--
作者：
S. Meco;G. Pardal;S. Ganguly;R. Miranda;L. Quintino;S. Williams
在本研究中，连续波光纤激光器用于传导模式连接铝合金和低碳钢。进行了两组不同的实验：镀锌钢和未镀锌钢。在重叠配置中进行焊接，钢板在顶部，目的是通过钢传导热量并在界面处熔化铝，润湿钢基材。这两种参与合金之间的冶金不相容性起源于金属间相的形成。因此，限制铝的熔化将限制金属间化合物层（IML）的形成和生长。结果表明，可以使用激光的功率密度，使得在界面处，铝仅熔化而钢保持固态。未涂覆的钢显示出IML形成的规律性图案，而Zn涂覆的钢显示出不同的IML图案。
In the present study, a continuous wave fibre laser was used in conduction mode to join aluminium alloys to low carbon steel. Two different sets of experiments were performed: with Zn-coated steel and uncoated steel. Welding was carried out in overlap configuration with steel plate on the top aiming to conduct the heat through the steel and melt the aluminium at the interface, wetting the steel substrate. Metallurgical incompatibilities between these two participating alloys originate the formation of intermetallic phases. Therefore, restricting melting of the aluminium would limit the formation and growth of the intermetallic layer (IML). It was shown that the power density of the laser could be used such that, at the interface, aluminium only melts and the steel remains in solid state. The uncoated steel showed a regular pattern of IML formation, while the Zn-coated steel showed a different pattern of IML.