Influence of hot compressive deformation conditions of 6061 aluminum alloy on flow stress and research on its constitutive equation

In the paper, according to test data, relationships on flow stress, temperature, strain rate and strain of 6061 aluminum alloy is studied through single and multiple regression, and by the test data, constitutive equation of 6061 aluminum alloy is researched. The results show that relationship between flow stress and strain rate is applied to hyperbolic sine equation in the hot compressive deformation of 6061 aluminum alloy; at the same time, relationship between logarithmic hyperbolic sine of its flow stress and reciprocal of absolute temperatures is linear, and hot compressive deformation is controlled by activation energy.