Final Report Summary - MULTIAX (MULTIAX: Multiaxial and Multiscale Plasticity in Metals) MULTIAX has developed biaxial deformation devices that can be used stand-alone in a laboratory or insitu, during xray diffraction experiments at synchrotrons or high resolution digital image correlation in a scanning electron microscope. The devices allow studying nanostructured materials, free standing thin films and bulk alloys. MULTIAX has also developed the necessary technology for designing and making miniaturized cruciform samples. These new devices were used to study the microstructural evolution during multiaxial strain paths or changes in strain path in a series of lightweight alloys (Ti-based, AlMg alloys), superelastic NiTi and TRIP/TWIP steels. To enhance synergies with computational material science, a modelling approach was developed that can be used to guide in-situ neutron diffraction experiments during biaxial load path changes of cruciform shaped samples, and to analyse and understand the microstructural and mechanical response of materials. Furthermore, atomistic simulations have revealed the role of the strain path on the interaction of dislocations with twin boundaries.
