Mechanical and corrosion properties of aluminium alloy EN AW 6082 after severe plastic deformation (SPD)
Aluminium alloy, severe plastic deformation, Mechanical properties, corrosion properties, Fatigue properties
The aim had been to study changes in the properties of aluminium alloy AlSiMgMn. Influence of SPD of the mechanical properties had increased (Rm by 86 MPa, Ro0,2 by 175 MPa, while A had decreased to 20 %). The corrosion potentials had been evaluated in the environment of H2O and in SARS. After SPD was observed in the environment of H2O, that resistance had increased by -218 mV and after exposure up to 1 000 min there was a slight deterioration of resistance in SARS. On the surface specimens after SPD were observed higher quantities of corrosion products. After SPD was observed fatigue characteristics in torsional stress in the oblique branches Wohler curves showed favourable characteristics of about 35 %.
P. Lacková, M. Buršak, T. Kvačkaj, M. Halama