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Abstract
In this study, anumerical simulation of laser welding process is described in detail. A 3-D finite element modeling is employed for this purpose using FEM package of ANSYS® 14.5.3-D Gaussian heat distribution of conicalheat source moving with constant traverse speed is considered for performing thermal analysis. The variation inmaterialproperties of Ti-6Al-4V with respect totemperature is considered during simulation. The convectiveand radiativemodes of heat transfer arealso incorporated in boundary conditions. The influence of welding power on temperature contour and aspect ratio of weld bead areexplored. It is observed that the bead width and penetration depth is strongly affectedby the imposed beam power. The microstructural study is also conducted inside the weld bead for fully penetrated weldment. The fully martensitic structure is developed in the fusion zone. The beauty of the present model is that it will help to optimize the laser welding parameters and also it will helpful toestimate the temperature field at different location of the weldments.