Combined deformation behavior and microstructure evolution of 7050 aluminum alloy during hot shear-compression deformation
| Autor: | Yijun Li, Deli Sang, Ruidong Fu |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Materials science Mechanical Engineering Drop (liquid) Metallurgy Alloy 02 engineering and technology Deformation (meteorology) engineering.material 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure 01 natural sciences Simple shear Condensed Matter::Materials Science Shear (geology) Mechanics of Materials 0103 physical sciences Dynamic recrystallization Shear stress engineering General Materials Science Composite material 0210 nano-technology |
| Zdroj: | Materials Characterization. 122:154-161 |
| ISSN: | 1044-5803 |
| Popis: | The shear-compression specimen was employed to study the hot deformation behavior and microstructure evolution of 7050 aluminum alloy at transient conditions. Rapid drop of the flow curves after the peak stress was the common feature at low temperatures, which resulted in the strain localization along the edges of the deformation zone. The combined deformation features with a competition between compression and shear were proved. In the early stage of the deformation, the compression strain played the dominated role. Instead, the shear strain became the main strain path in the subsequent stage. For the large equivalent strain and high strain rate, the dynamic microstructure evolution was enhanced. Moreover, the dynamic recrystallization exhibited multiple features in term of geometric, discontinuous and continuous recrystallization. Finally, the relations between flow behavior and microstructure evolution were presented and discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect