Intragranular strain in precipitate hardened Al grains in Al6010 multiphase alloys

In modern multiphase materials, damage initiation and growth usually occur during forming and service. The key to understand the initiation and growth of voids in such materials is the characterization of the microstructural mechanisms in a statistically relevant manner over a large number of damage sites. Here, we propose to use DCT, PCT, 3DXRD and scanning 3DXRD scans to determine the shape, arrangement, orientation as well as grain average and intragranular strain distribution of a representative ensemble of grains (approx. 1000 grains) during mechanical loading of samples of age-hardened Al6010 multiphase alloys. Based on the correlation of the complementary datasets, strain localizations can be detected and the specific morphological and crystallographic boundary conditions for the strain localization and subsequent damage initiation can be analysed in detail The “single grain” behaviour and specific nearest neighbour correlations will also be used to teach CP-FEM modeling.