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Neutron Diffraction and Diffraction Contrast Imaging for Mapping the TRIP Effect under Load Path Change

2020; Multidisciplinary Digital Publishing Institute; Volume: 13; Issue: 6 Linguagem: Inglês

10.3390/ma13061450

1996-1944

E. Polatidis, Manuel Morgano, Florencia Malamud, M. Bacak, Tobias Panzner, H. Van Swygenhoven, Markus Ströbl,

High-pressure geophysics and materials

The transformation induced plasticity (TRIP) effect is investigated during a load path change using a cruciform sample. The transformation properties are followed by in-situ neutron diffraction derived from the central area of the cruciform sample. Additionally, the spatial distribution of the TRIP effect triggered by stress concentrations is visualized using neutron Bragg edge imaging including, e.g., weak positions of the cruciform geometry. The results demonstrate that neutron diffraction contrast imaging offers the possibility to capture the TRIP effect in objects with complex geometries under complex stress states.