研究目的

Investigating conductive and convective heat transportation during pulsed laser welding of AISI 316 L stainless steel sheets.

研究成果

Conductive and convective heat transfers during an autogenous butt joint welding of AISI 316L stainless steel sheets using pulsed Nd: YAG laser have been investigated through simulated results of FEA based three-dimensional models. The discussion made for the results recorded for transient thermal responses across the weld joint at the top and bottom. Temperature distributions predicted as functions of inward heat flux and Paclet number during the pulsed laser welding process to investigate the heat and mass transportation in and around the weld pool. The melt flows in the weld pool and heat transfer in the heat-affected zone have investigated for sequential pulses and the results compared experimental observations. These computed and experimental results have a close association with experimental results.

研究不足

The effect of shielding gas is not considered in the model. The thermo-physical properties of 316 L stainless steel accounted only for the solid-state region.