NUMERICAL APPROACH TO STEADY STATE TEMPERATURE DISTRIBUTION IN PULSED ND: YAG LASER WELDING OF HASTELLOY C-276
Keywords:
Pulsed laser welding, Hastelloy C-276, SYSWELD 16, aspect ratio, Temperature distributionAbstract
The influence of heat source in Nd: YAG laser welding of Hastelloy C-276, subjected to varying welding speeds (350 mm/min-450 mm/min), is presented in this study. The temperature distribution across various regions viz., base alloy, heat affected zone (HAZ) and fusion zone are determined by SYSWELD 16 - a 3D finite element software package. Numerical simulation for the attempted welding speeds shows complete penetration, though the morphology of the weld differs. The maximum temperature was obtained in the fusion zone in the attempted welding speeds. The aspect ratio (depth/width) of the weld pool increases with welding speed.
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