Influence of Welding Parameters on Mechanical Properties and Microstructure of Similar Low-Carbon Steel AISI 1005 Welding by Resistance Spot Welding

Abstract

Resistance spot welding (RSW) was used to fabricate Similar joints of low-carbon steel AISI 1005 in lap joint design RSW. Evaluate the welding current, squeeze time, welding time, and hold time, which affects resistance spot welding. A tensile-shear force fracture test was used to assess the mechanical properties Using a universal tensile testing machine. The microstructure of the fusion zone was examined using a scanning electron microscope (SEM). According to the data, the shear strength values increased as the welding current increased. Additionally, it was shown that most failures occurred closer to the fusion zone (FZ). The primary cause is the crystal lattice's strained distortion, which weakens the nearby region of the fusion zone.