Abstract
An efficient structure design using welding of dissimilar steels is a common strategy in the process and construction industries. This study investigates the temperature distribution in the HAZ due to multi pass welding of an austenitic stainless steel SUS316 pipe to carbon steel S610 plate. A nonlinear transient thermal FE analysis is performed using ANSYS software. An APDL (ANSYS Parametric Design Language) program is developed to define moving double ellipsoidal heat source model, nonlinear thermal properties and thermal boundary conditions. Addition of filler metal is simulated using element death and birth technique. Transient effect of heat and cooling slopes during welding are studied. The present work offers a basis for future prediction of welding residual stresses and distortions in joint between pipe and plate.
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