izvorni znanstveni rad
Effect of heat treatment on mechanical and corrosion properties of AlSi1MgMn aluminum alloy
Sažetak
Aluminum alloys from the groups EN-AW 20XX, EN-AW 60XX and EN-AW 70XX achieve their useful properties after precipitation hardening. Heat treatment parameters significantly affect the microstructure, mechanical and corrosion properties of the treated alloy. In this paper, precipitation hardening of AlSi1MgMn alloy was carried out by homogenization annealing at 560 °C/6h with artificial aging at temperature of 150 °C and 175 °C for 5 h and 10 h. he test samples were tested for hardness using the Vickers method. Resistance to electrochemical corrosion in a 3.5% NaCl aqueous solution was determined by the Tafel method. According to the criterion of the highest hardness and the lowest corrosion rate, the optimal temperature and duration of artificial aging are 175 °C/5h.
Ključne riječi
precipitation hardening; artificial aging; electrochemical corrosion; AlSi1MgMn