Abstract 
	The paper is focused on issues of processing of non-ferrous metals in practice, namely on Mg-Al-Zn based Magnesium alloys with graded Al contents. It is well known that forming of these alloys is difficult since this feature is caused by their crystallographic arrangement. Nevertheless, application of appropriate methods of forming, such as e.g. some of SPD processes, makes it possible to achieve even in these alloys with comparatively very low formability very good results with orientation on their final mechanical properties, not only strength but also proven plastic properties. Methods ARB and ECAP were used in the described experiment.  It was proved that hardly forming materials could achieve very high plastics properties. After making plastics deformation, the using materials of alloys AZ61 and AZ91 analysed superplastics behaviour, it was certified by obtaining results, when ductility to rupture of alloy AZ91 was 418 %, it is demonstrated at conclusion of the article. The experiment proved big influence of previous plastics deformation to ending values of mechanical properties. It was verified that better results are at rolling in more steps compared to rolling in one pass. It was obtained the material about grain size d ? 0,7?m during using the technology of ECAP. The low submission temperature at last pass through die, it causes obtaining higher final properties. Abreast of it the technology ARB enabled to get material of grain size in interval d ? 1-10 ?m. The second technology brings higher strength properties. Only 3 cycles were sufficient to lower original grain size under limit 10 ?m