The Effect of Varying the Solution Treatment Temperature, Natural Aging Treatment and Artificial Aging Treatment on the Mechanical Strength of 7249 Aluminum Alloy

Aluminum 7249 alloy (Al-Zn-Mg-Cu-Cr)was processed into 135 different conditions. The variables studied were five solution treatment temperatures (445 deg C-505 deg C), three quenching media (water, 20% polyalkylene glycol, and air), three natural aging times (0, 4, and 168 hours) and three artificial aging temperatures (111 deg C, 121 deg C, and 131 deg C). The effect of these variables on the tensile behavior, hardness measurements and electrical resistivity measurements were studied.