Electron diffraction analysis of dislocation- induced substructure evolution of Al crystals in compression

Magsud Masimov (1)

1 Institute of Material Science [Freiberg]

A correct description of the mechanical behaviour of metallic materials after deformation to large strains requires the quantitative determination of substructure characteristics on different length scales. Important tools for this purpose are Transmission Electron Microscopy (TEM), EBSD (Electron Backscattering Diffraction) and XRD (X-ray diffraction), which lead to quantities as the mean total dislocation density, the density of excess dislocations stored in dislocation walls, the distributions and the averages of local lattice rotations and the size (chord length) of the lattice regions (cell blocks, fragments) of the meso-scale substructure. The present paper illustrates the application of EBSD and XRD for the analysis of the deformation substructure occurring in polycrystalline Al during uniaxial compression up to strains e ≈ 1.92.

Mots clés: Physical Sciences

Magsud Masimov. Electron diffraction analysis of dislocation- induced substructure evolution of Al crystals in compression. Philosophical Magazine, 2007, 87 (10), pp.1565-1573. ⟨10.1080/14786430601069792⟩. ⟨hal-00513802⟩