%0 journal article
%@ 1044-5803
%A Garces, G., Onorbe, E., gan, W., Mathis, K., Tolnai, D., Horvath, K., Perez, P., Adeva, P.

%D 2017
%J Materials Characterization

%P 116-124 
%R doi:10.1016/j.matchar.2017.02.017
%T Evolution of twinning in extruded AZ31 alloy with bimodal grain structure
%U https://doi.org/10.1016/j.matchar.2017.02.017
 
%X Twinning in extruded AZ31 alloy with a bimodal grain structure is studied under compression along the extrusion direction. This study has combined in-situ measurements during the compression tests by Synchrotron Radiation Diffraction and Acoustic Emission techniques and the evaluation of the microstructure and texture in post-mortem compression samples deformed at different strains. The microstructure of the alloy is characterized by the coexistence of large areas of fine dynamic recrystallized grains and coarse non-recrystallized grains elongated along extrusion direction. Twinning occurs initially in large elongated grains before the macroscopic yield stress which is controlled by the twinning in equiaxed dynamically recrystallized grains.