%0 Journal Article
%T The Effect of 2% SiO2 Nanopowder on Mechanical Behavior of Mg AZ31
%J Journal of Stress Analysis
%I Bu-Ali Sina University
%Z 2588-2597
%A Barati, F.
%A Esfandiari, M.
%A Babaei, S.
%D 2020
%\ 09/01/2020
%V 5
%N 1
%P 69-76
%! The Effect of 2% SiO2 Nanopowder on Mechanical Behavior of Mg AZ31
%K AZ31 alloy
%K The hot ring and compression test
%K Bulge correction factor
%K Zener-Hollomon equation
%R 10.22084/jrstan.2020.21334.1139
%X 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.
%U https://jrstan.basu.ac.ir/article_3548_e853848f461701ef755f97605fd3de47.pdf