Research in August:

- preparing samples of AA1050 alloy to observations in the scanning electron microscope (EBSD)- grinding, polishing;
- preparing orientation maps of samples of the aluminum alloy after ECAP and recrystallization (in different temperatures and constant time = 1h);
- annealing samples of the aluminum alloy 3004 for 1 h in different temperatures (in the range 100-400°C).

Analysis of obtained results from the scanning electron microscope with used technique EBSD (electron backscattered diffraction) for the alloy AA1050 after different times of annealing in 270°C. In analysis were used tools: TSL OIM Analysis 5 and MS Excel. There were noted the following relationships:

- quantity of low and high angle grain boundaries are decreasing with time of annealing of aluminum alloy at 270°C;
- quantity of low angle grain boundaries calculated to the total number of all boundaries firstly decrease with time of annealing but after 30 min is observed that their number increases;
- the low angle grain boundaries constitute from 18% (for 30min annealing) to 37% (in the deformed state = without annealing), while a high angle constitute from 63% to 82%.