Measuring and Modelling the Microstructures of Two-Phase Aluminium Alloys after Deformation

Abstract:

The effect of second-phase particles on the deformation and annealing behaviour of metals is re-assessed in the light of some new techniques. Using an EBSD method which provides much improved angular resolution, the effect of small non-deformable particles on the homogeneity of the deformation microstructure has been quantified. The presence of micron sized second-phase particles alters the deformation microstructure adjacent to particles, and a 3-d investigation of the deformation structures associated with large (>1μm) second-phase particles in cold rolled aluminium alloys has been carried out using 3-d FIB sectioning combined with EBSD, and the microstructures compared with the predictions of 3-d CPFEM modelling. The effects of grain orientation, strain and particle size have been investigated, and the results compared with earlier TEM investigations of such microstructures.

• Periodical: Materials Science Forum (Volumes 715-716)
• Pages: 23-32
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.715-716.23
• Online since: April 2012
• Authors: John F. Humphreys, Pete S. Bate, Ali Gholinia, Ian Brough
• Keywords: 3D, Aluminum (Al), Annealing, Deformation, EBSD, FIB, Particle, Second Phase, Texture

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