A 3-D FINITE ELEMENT ANALYSIS OF TRANSIENT TEMPERATURE PROFILE OF LASER WELDED Ti-6Al-4VALLOY
نویسندگان
چکیده
In this work a numerical investigation of transient temperature profile of laser beam welding process is carried out. A 3-D finite element modelling isdevelopedconsidering combined double-ellipsoidalheat source model for both spot and moving heat source. The temperature dependent thermo-physical material property of Ti-6Al-4V alloy isincorporated. The effect of latent heat of fusion and convective and radiative boundary conditions are considered. The effect of laser beam power on the transient temperature profile and the dimensions of the heat affected zone areanalysed. From finite element simulation, it is observed that the peak temperature in the fusion zone increases with increasedbeam power.Also,the size ofthe heat affectedzonestrongly depends on the power of the laser beam.
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