J. Phys. IV France
Volume 134, August 2006EURODYMAT 2006 - 8th International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading
|Page(s)||1003 - 1008|
|Publié en ligne||26 juillet 2006|
J. Cirne, R. Dormeval, et al.
J. Phys. IV France 134 (2006) 1003-1008
Influence of spherical converging shock waves on the structure of Al–2.4% Mg–5.5% Zn alloyA.V. Dobromyslov1, N.I. Taluts1, E.A. Kozlov2 and A.N. Uksusnikov1
1 Institute of Metal Physics, Ural Division of Russian Academy of Sciences, 620219 Ekaterinburg, Russia
2 Russian Federal Nuclear Center – Research Institute of Technical Physics, 456770 Snezhinsk, Chelyabinsk Region, Russia
Published online: 26 July 2006
Al-2.4 wt% Mg–5.5 wt% Zn alloy specimens were subjected to loading by spherical converging shock waves. The microstructure of different layers of the recovered specimens was studied by optical and transmission electron microscopy and microhardness measurements along radius. It was established that the alloy exhibits high dislocation density, localization of deformation and formation of complicated deformation defects. The high dislocation density does not lead to the formation of a cell-like structure in this alloy. Cross-slip of dislocations was found to be suppressed by increasing the shock wave pressure.
© EDP Sciences 2006