Abstract:
Microwave joining is an emerging technique for the joining of metallic materials because it can join metals faster and offers uniform heating. The current work studies the multi-physics simulation of a microwave-joined Hastelloy C-276 plate with Inconel 718 interface powder inside a multimode microwave applicator at 2.45 GHz and 900 W. The distribution of electric field, temperature, and thermal stress in the joint were analyzed to understand the microwave-joined Hastelloy C-276 plates. The results revealed that the maximum values of electric field strength and temperature at the central plane of symmetry were 7.4 × 104 V/m and 1.43 × 103 ⁰C, respectively. The maximum thermal stress (1.37 × 109N/m2) was estimated using von-Mises criterion. Resistive losses were found to be maximum i.e., 2.72 × 108 W/m3 at the ends of the graphite plate. The study determined the optimum parameters for microwave joining of Hastelloy C-276 plates.