On crystallographic aspects of heterogeneous plastic flow during ductile tearing: 3D measurements and crystal plasticity simulations for AA7075-T651

Crystallographic aspects of heterogeneous plastic flow during ductile tearing are assessed experimentally by combining in situ synchrotron laminography imaging notched flat samples with a full-field measurement technique and numerical simulations the crystal plasticity finite element method (CP-FEM). Advantage is taken plane strain condition region ahead notch root (i.e., normal to crack propagation direction) perform two-dimensional image correlation material bulk. Intermetallic particles provide contrast that registered analyses. They reveal early onset slant strained bands along which final propagated. Two-dimensional CP-FEM using grain shape crystallographic orientations studied show same trends as those observed experimentally, namely, appearance cross tens grains remain stable over loading history. The ratio strains within outside also similar experimentally.