Abstract
The influence of heat treatment conditions and severe plastic deformations (SPD) by ECAP on structural and mechanical properties development of EN AW 6082 aluminium alloy was investigated. The hardness and mechanical properties in dependence on two types of solution heat treatment (TSA=400°C+slow cooling and TSA = 550°C +quenching), natural or artificial ageing treatment (room temperature, 100°C, 170°C), several annealing temperatures (TA=100 - 300°C) and ageing or annealing times after SPD were tested. The best properties for EN AW 6082 material were achieved after processing by (TSA=550°C/1,5h + water quenching + 3xECAP/20°C + TAA=100°C/30h) on level: 0,2%YS=408MPa, UTS=427MPa, El.=20,1%, Re.=29,3%, KCVRT=16,5J.cm-2.
