In-situ neutron and synchrotron methods for the investigation of plastic deformation and annealing in metals

Abstract. Following a crash course in neutron and synchrotron diffraction standards, applications are demonstrated on selected metallic systems, comprising the atomic order titanium aluminide intermetallics at thermal mechanical processing. High pressure torsion processed specimens show heterogeneous structure order. Upon heating, their nanostructure evolves revealing regimes of recovery, recrystallization grain growth, which can be exploited for engineering designated microstructures with enhanced physical properties. Advanced analysis two-dimensional diffractograms by radiation allows to distinguish microstructure transformations as well deformation mechanisms thermo-mechanical The methods applicable wide range materials processes allowing speed up development orders magnitude.