The Effect of 2% SiO2 Nanopowder on Mechanical Behavior of Mg AZ31

The AZ31 alloy containing nanopowder SiO2, in comparison to other magnesium alloys, can be utilized for manufacturing extruded parts with a high loading rate. The main goal of the present study is to investigate the compressive flow stress for AZ31 alloy reinforced with 2 % SiO2 nano particles (with mean diameter of 35±2 nm) in three different temperatures of 473, 493, and 513 K and three strain rates of 0.0002, 0.002 and 0.02s-1 using ring compression test. The stress-strain curve at three temperatures and three strain rates were obtained by implicating the bulge and numerical correction factors. Having drawn stress and strain curve, a relation between stress and strain using the Zener-Hollomon equation, which is based on activation energy from plastic forming, was found. The coefficients of the Zener-Hollomon equation were computed for achiving the activation energy.