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Microtexture tracking in hot-deformed polycrystalline aluminium: Experimental results
- Source :
- Acta Materialia, Acta Materialia, Elsevier, 2010, 58 (5), pp.1629-1642. ⟨10.1016/j.actamat.2009.11.007⟩
- Publication Year :
- 2010
- Publisher :
- Elsevier BV, 2010.
-
Abstract
- A split sample of Al–0.1%Mn has been deformed by a series of compression tests in a channel-die at 400 °C to a final strain of 1.6. The orientations of 176 grains in a 4 × 4 mm 2 internal surface were followed by high-resolution electron backscatter diffraction at four different strains to compare with crystal plasticity models. Typically 3000 orientations per grain were used to quantify the average lattice rotations of each grain together with their orientation spreads (termed microtexture tracking). The average orientations tend towards the standard β -fibre plane-strain compression texture components, albeit with some variations. The in-grain orientation spreads develop strongly at first, then tend to saturate at high strains. Finally, the influence of grain environment on lattice rotation is examined by means of the rotation “variability at constant orientation”. On average and at the beginning of the deformation, two grains of the same initial orientation, but different neighbours, would rotate by angles that vary by 25% and axes separated by 37°; their orientations at e = 1.2 would vary by 12°.
- Subjects :
- Materials science
Polymers and Plastics
Mineralogy
chemistry.chemical_element
Geometry
02 engineering and technology
Rotation
Modelling
[SPI.MAT]Engineering Sciences [physics]/Materials
0203 mechanical engineering
Aluminium
Lattice (order)
Electron backscattering diffraction (EBSD)
Plastic deformation
Microstructure
Metals and Alloys
Aluminium alloys
021001 nanoscience & nanotechnology
Electronic, Optical and Magnetic Materials
020303 mechanical engineering & transports
Electron diffraction
chemistry
Ceramics and Composites
Crystallite
Deformation (engineering)
0210 nano-technology
Electron backscatter diffraction
Subjects
Details
- ISSN :
- 13596454
- Volume :
- 58
- Database :
- OpenAIRE
- Journal :
- Acta Materialia
- Accession number :
- edsair.doi.dedup.....c4fc120423fdcf4dcf58f2c3fa1118aa