کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5454697 | 1514357 | 2017 | 10 صفحه PDF | دانلود رایگان |

- The flow stress of the Al-Cu-Li alloy is influenced by the original orientation combination.
- The original orientation combination affects the deformation restriction between grains.
- A novel deformation restriction factor γⲠhas been proposed.
- The difference in deformation restriction leads to the different substructure characteristics.
The deformation behavior of a material is closely related to its preferred orientations. Usually, material contains more than one preferred orientation, and the combination of different preferred orientations makes the deformation behavior more complicated. In this study, the effects of orientation combination on the deformation substructure characteristics of an extruded Al-Cu-Li alloy were investigated. Isothermal compression tests of Al-Cu-Li samples with different orientation combinations were conducted to study the flow stress behavior. The microstructure of the deformed samples was examined and analyzed by electron backscatter diffraction. A novel deformation restriction factor γâ²Â has been proposed to compare the deformation restriction of different orientation combinations. It was found that compared with the sample which contains ã001ã&ã101ã orientation combination, the sample containing ã001ã&ã111ã orientation combination possesses higher subgrain misorientation and finer grain size because of the larger deformation restriction between ã001ã&ã101ã orientated grains. The present work shows that it is feasible to control the continuous dynamic recrystallization microstructure of the Al-Cu-Li alloy by adjusting the original orientation combination.
Graphical Abstract255
Journal: Materials Characterization - Volume 130, August 2017, Pages 113-122