Volume 7, Issue 1, March 2017

The effect of severe plastic deformation by high pressure torsion (HPT) on the structure of AK12MMgN-18%SiCp composite alloy was investigated. The secondary electron image and the mapping to this region on the main elements of alloy after post-HPT annealing at 500°C for 2 hours is shown on the figure.

Basing on finite elements method simulations and experiments the stress and strain distributions in surface points of a disk specimen loaded according to the "Brazilian test" (compression of the disk in the diametrical plane) have been studied. The color pattern of the strain distribution εх in the surface of iron sample points: (a) — the initial stage of loading, the (b) — stage preceding the destruction, (c) — stage destruction are shown on the figure.