Resistance spot weldability of comparatively thick C-Mn-Cr-Mo dual phase steel sheet.

Abstract

Welding of comparatively thick (4 mm)C-Mn-Cr-Mo dual phase steel has beencarried out by ~esistance spot welding process. Weldability of this steel has been studied by varying the electrode force and the primary welding parameters affecting the heat input such as the eftective current and weld time. The influence of these welding parameters on the morphology, microhardness and the tensile shear strength of the weldmentare investigated.