S-3DXRD during superelastic loading to validate simulations at the intragranular scale and near different interfaces

A 3D map of one grain within a polycrystalline shape memory (SMA) alloy will be performed with S-3DXRD during 8 stages of a superelastic loading. 5 steps during loading (3 of them in the transformation domain) and 3 steps during unloading. The aim of this proposal is to (1) reconstruct both austenitic and martensitic microstructures of a SMA, then (2) validate the simulations at a finer scale (intragranular) and near different interfaces (martensite-austenite, grain boundary-austenite, grain boundary-martensite).