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| Microstructure and Mechanical Properties of Magnesium Alloy AZ80 under Hypothermal Multiple Extrusion |
| Received:May 24, 2016 Revised:June 06, 2016 |
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| DOI： |
| KeyWord:magnesium alloy AZ80; multiple extrusion; gain refinement; microstructure; mechanical properties |
| Author | Institution |
| ZHANG Zhenxing |
南京理工大学 材料科学与工程学院 |
| YAN Yinbiao |
南京理工大学 材料科学与工程学院 |
| REN Hao |
南京理工大学 材料科学与工程学院 |
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| Abstract: |
| Effects of deformation temperature on microstructure and mechanical properties of magnesium alloy AZ80 processed by hypothermal multiple extrusion were investigated. Initial deformation temperature include 390 °C and 370 °C. The results indicated that relatively lower deformation temperature is more beneficial for the gain refinement of magnesium alloy. The specimen processed by hypothermal multiple extrusion at 370 °C has better microstructure and mechanical properties. The size of dynamically recrystallized grains is about 3.5μm. The yield strength and elongation are 201Mpa and 6.78%。Mechanisms of dynamic recrystallization of magnesium alloy include twin dynamic recrystallization,continuous dynamic recrystallization and discontinuous dynamic recrystallization. |
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