Fatigue strength evaluation of self-piercing riveted joints of AZ31 Mg alloy and cold-rolled steel sheets

The application of magnesium alloys to automobiles is increasing due to their superior specific strength and specific stiffness. In this study, an upper sheet of AZ31 magnesium alloy and a lower sheet of cold-rolled steel were joined by self-piercing riveting (SPR), a method commonly used to join automotive panels. A cross-shaped specimen was fabricated with a punching force of 35 kN, which exhibited the best joint strength for the SPR joint...