The Effect of Repeated Upsetting Process on Microstructure, Shear Strength, and Fracture Toughness of SiC/AZ80 Nanocomposite

In this study, first, the microstructure and mechanical properties of AZ80 magnesium alloy and SiC/AZ80 nanocomposite were compared. Then, the effects of 1, 3, and 5 passes of repeated upsetting (RU) process performed at 300 °C on the nanocomposite were investigated. According to the optical microscopy images, the average grain size in AZ80 alloy is 60.3 μm, which has decreased to 30.6 μm as a result of adding SiC nanoparticles. After the fifth...