Microtextural evolution of different TRC AA8006 alloy sections with homogenization
| Autor: | Zhong-wei Chen, Long-fei Shen, Jing Zhao |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Materials science
Misorientation Annealing (metallurgy) Mechanical Engineering Metallurgy Alloy Metals and Alloys Recrystallization (metallurgy) engineering.material Homogenization (chemistry) Physics::Fluid Dynamics Grain growth Geochemistry and Petrology Mechanics of Materials Materials Chemistry engineering Composite material Anisotropy Electron backscatter diffraction |
| Zdroj: | International Journal of Minerals, Metallurgy, and Materials. 22:292-301 |
| ISSN: | 1869-103X 1674-4799 |
| Popis: | Grain microtexture evolution in twin-roll cast AA8006 alloy sheets subjected to different treatments was investigated using electron backscatter diffraction. The textures of rolling-transverse and normal-transverse sections were characterized in original as-cast twin-roll casting and cold-rolled samples as well as samples homogenized at 500°C for 8 h and at 580°C for 4 h. It is found that grains on both the rolling-transverse and normal-transverse sections of cold-rolled samples are made finer by rolling deformation and coarsened after homogenization. Annealing temperature has a stronger effect on the microstructural evolution than annealing time. The grain growth direction is parallel to the normal-transverse section, while grain deformation is more stable on the rolling direction than on the normal direction. The rolling orientations display more obvious anisotropy on the normal-transverse sections than on the rolling-transverse sections. Grain recrystallization and growth occur much easier on the normal-transverse section than on the rolling-transverse section for samples homogenized at 500°C for 8 h. A special misorientation relationship between cold deformation texture, such as S orientation {123}〈634〉 and cube orientation 〈110〉‖Xaxis [cubic], and recrystallization texture after homogenization, such as R orientation {124}〈211〉 and P orientation {011}〈122〉, is observed. |
| Databáze: | OpenAIRE |
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