%0 journal article
%@ 0023-432X
%A Dobron, P.,Chmelik, F.,Bohlen, J.,Letzig, D.,Kainer, K.U.

%D 2005
%J Kovove materialy / Metallic materials
%N 3
%P 192-201 

%T Influence of Grain Size on Deformation Behaviour of Extruded AZ31 Investigated by the Acoustic Emission Technique
%U 
3 
%X Acoustic emission (AE) was monitored and analysed during tensile tests at room temperature,(RT) of extruded magnesium alloy AZ31 (Mg-2.9wt.%Al-0.98wt.%Zn-0.29%Mn).,Hydrostatically and indirectly extruded rods were water-cooled or air-cooled, respectively, and,exhibit different microstructures, e.g. a variation of the grain size, as well as different mechanical,properties. The validity of the Hall-Petch relation was proven. The results are explained in terms,of dislocations glide and deformation twinning during plastic deformation.