LAUSR

Aluminum alloys are highly favored in the aerospace and other transportation industries due to their high strength-to-weight ratio. In this study, the tensile properties of commercial AA 2219-T8, AA 2519-T8 and AA 2624-T351 aluminum alloys were investigated and compared. The mechanical behavior of the alloy under uniaxial tensile loading was investigated using the Instron 5569A Test System, while digital image correlation system was, at the same time, used to measure and record the strain as the alloy specimens deformed under mechanical loading. AA 2519-T8 and AA 2624-T351 alloys have superior ultimate tensile strength (UTS) when compared with the UTS of AA 2219-T8 alloys. The UTS of AA 2519-T8 and AA 2624-T351 alloys is comparable. AA 2519-T8 alloy has the highest yield strength of the three alloys. AA 2624 alloy has the highest ductility under tensile load. The three alloys fail by ductile failure with the size of dimples varying from one alloy to the other.