PRESS FORMABILITY OF YAG LASER WELDED TRIP STEEL SHEETS
来源期刊：Acta Metallurgica Sinica2002年第1期
论文作者：A.Nagasaka
Key words：YAG laser welding; retained austenite; transformation-inducedplasticity;
Abstract: The effects of YAG laser welding conditions on mechanical properties and pressformability (bendability, stretch-formability and deep drawability) of high-strengthtransformation-induced plasticity-aided dual-phase (TDP) steel were investigated.Tensile tests and press forming tests have been conducted for laser butt welded jointsbetween two pieces of the same steel. The tensile property and press formability wereaffected by the welding speed of 100 to 1100mm/min and the energy of 6 to 9J/pulse.Excellent press formability was obtained with the energy of 6J/pulse and the weldingspeed of 300mm/min. It was concluded that the excellent weldability of the TDP steelcan be ascribed to the weld joint formation.
A.Nagasaka1
(1.Department of Mechanical Engineering, Nagano National College of Technology, 716 Tokuma, Nagano 381-8550, Japan)
Abstract:The effects of YAG laser welding conditions on mechanical properties and pressformability (bendability, stretch-formability and deep drawability) of high-strengthtransformation-induced plasticity-aided dual-phase (TDP) steel were investigated.Tensile tests and press forming tests have been conducted for laser butt welded jointsbetween two pieces of the same steel. The tensile property and press formability wereaffected by the welding speed of 100 to 1100mm/min and the energy of 6 to 9J/pulse.Excellent press formability was obtained with the energy of 6J/pulse and the weldingspeed of 300mm/min. It was concluded that the excellent weldability of the TDP steelcan be ascribed to the weld joint formation.
Key words:YAG laser welding; retained austenite; transformation-inducedplasticity;
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