Comparison of the weld quality of friction welding and laser welding for IN713LC and SCM440 steel

초내열합금 IN713LC와 SCM440의 마찰용접 및 레이저용접에 대한 특성 비교

The purpose of this work is to find an appropriate welding approach for rotor assembly of a marine turbocharger. The friction welding and laser welding of dissimilar materials, IN713LC and SCM440 were investigated. The quality of the welded joints obtained from two welding processes was evaluated by microstructure observation, micro-hardness and tensile tests. The friction welded joint indicated a good bonding structure in the weld interface. On the other hand, the laser welded joint showed the weld defects and non-welded area in the weld interface.