Quasi and dynamic compression of ECAP processed AA 6082

Abstract

AA 6082 in as received T651 condition was solution treated and immediately processed via equal channel angular pressing (ECAP) to one and two passes and then naturally aged to 100 days. The processed samples were subjected to quasi and dynamic compression testing using regular universal testing machine and split Hopkinson pressure bar (SHPB), respectively. The testing was conducted at a wide range of strain rates and temperatures and the constitutive Johnson model constants were identified. The effect of cryo temperature versus room temperature during dynamic compression was, also, evaluated in terms of the evolution of microstructure and stress - strain response.