| 摘要 |
The present invention relates to a welding material for laser welding, a laser welded joint using the same, and a welding method for the same. According to an embodiment of the present invention, provided are a welding material for laser welding, comprising 0.02 wt% or less of C (0 is exclusive), 0.2 wt% or less of Si (0 is exclusive), 0.2 wt% or less of Al (0 is exclusive), 0.2-1.0 wt% of Mn, and 10-20 wt% of Ni, as a welding material for laser welding of a steel material, comprising 2.8 wt% or more of Si and 0.35 wt% or more of Al, a laser welded joint using the same, and a welding method for the same. The present invention has an effect of obtaining a laser welded joint whose toughness is improved, and wherein an increase in brittleness is prevented by effectively suppressing generation of precipitates and deformation twins by properly controlling an alloy composition of a welding material. |
