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The Effect of 2% SiO2 Nanopowder on Mechanical Behavior of Mg AZ31 | ||
| Journal of Stress Analysis | ||
| دوره 5، شماره 1، آذر 2020، صفحه 69-76 اصل مقاله (4.33 M) | ||
| نوع مقاله: Original Research Paper | ||
| شناسه دیجیتال (DOI): 10.22084/jrstan.2020.21334.1139 | ||
| نویسندگان | ||
| F. Barati* ؛ M. Esfandiari؛ S. Babaei | ||
| Department of Mechanical Engineering, Hamedan Branch, Islamic Azad University, Hamedan, Iran. | ||
| چکیده | ||
| 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. | ||
| کلیدواژهها | ||
| AZ31 alloy؛ The hot ring and compression test؛ Bulge correction factor؛ Zener-Hollomon equation | ||
| مراجع | ||
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