The effects of YAG laser welding conditions on mechanical properties and press formability (bendability, stretch-formability and deep drawability) of high strength TRIP-aided dual-phase (TDP) steel were investigated. Tensile tests and press forming tests have been conducted for laser butt welded joints obtained from the combination of the same steel. The tensile property and press formability were affected by the welding speed of 100 to 1100 mm/min and the energy of 5 to 9 J/pulse. The excellent press formability was obtained by using the energy of 6 J/pulse and the welding speed of 300 mm/min. It was concluded that the excellent weldability of the TDP steel was ascribed to the weld joints formation.
Formability of YAG Laser Welded TRIP-aided Dual-phase Steel Sheets
.png)
nagano_nct-35-02.pdf
(1.01MB)
