Influence of Initial Microstructure on the Hot Working Flow Stress of Mg-3Al-1Zn Alloy
| Autor: | Yu Liu, Yun Teng Liu, Tao Lin, Ji Xue Zhou, Yuansheng Yang, Di Zhang, Chang Wen Tian |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Materials science Mechanical Engineering Metallurgy 02 engineering and technology Deformation (meteorology) Strain rate Flow stress 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure 01 natural sciences Hot working Mechanics of Materials 0103 physical sciences Dynamic recrystallization General Materials Science Extrusion 0210 nano-technology Ductility |
| Zdroj: | Materials Science Forum. 898:86-90 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.898.86 |
| Popis: | The hot working flow stress of as-cast and two different extruded magnesium alloys AZ31was examined by uniaxial compression tests. It was found that the hot deformation behavior was affected by the deformation conditions and initial microstructure. The peak flow stress was sensitive to deformation temperature and strain rate, and the value was decreased with decreasing the deformation rate or increasing the deformation temperature. The extruded samples, instead of as-cast samples, have better ductility at high strain rate and high temperature. The temperature increment for Mg alloy with different extrusion ratios was also investigated. These key features of the deformation behavior were explained in terms of twinning, dynamic recrystallization and grain rotation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|