Constitutive modeling of creep properties of Aluminum 6061 Alloy

Abstract

A novel mathematical model is presented for determination of creep behavior of Aluminum 6061 alloy subjected to constant-stress uniaxial tensile creep experiment. The methodology employed to obtain the constants is by conducting experiments at the temperature range of 573 K to 673 K (300°C to 400°C) at different stress intervals 64.5 MPa and 98.1 MPa. The creep properties such as creep strain rate for all three stages, rupture time, rupture stress, rupture strain and percentage elongation of specimen are calculated. Depending on the temperature and the applied stress, exhibits significant effects on the strain rate and activation energy. The results show that the creep behaviors of the studied aluminum alloy strongly depend on the creep temperature, external stress, and creep time.