سنة النشر

2024

العنوان

Effect Of Mechanical Deformation On The Electrical Conductivity Of Resistance Spot Welding Joints

الخلاصة

In the automotive industry, resistant spot welding is now frequently utilized to join similar or dissimilar materials. Among these metals are copper and aluminum alloys. Electrical conductivity plays a significant role in the electromotive industry and its performance. Welded parts in electric cars are subjected to axial deformation and are often fractured due to tensile force. Hence, the conductivity may change due to the deformation. In this work, the changes in electrical conductivity due to the deformation will be studied. Therefore, electric resistance has been investigated in similar and dissimilar weld joints during the tensile tests. The relationship between weld deformation and conductivity has been presented. In general, similar weld joints will show high tensile shear strength. Therefore, dissimilar welds (Al-Cu) are showing less strength as compared with similar Cu-Cu and Al-Al joints. The results have been verified with the American Welding Society Standards. The electrical conductivity decreases with increasing deformation. Hence, similar weld joints conduct higher currents even after deformation. © The Author(s).