Study of deformation behavior, structure and mechanical properties of the AlSiMnFe alloy during ECAP-PBP

► AlSiMnFe alloy was formed by ECAP with partial back pressure (up to 3 passes). ► Heat treatment of the alloy caused precipitation of finer particles. ► The minimum grain sizes (∼500 nm) were obtained after 3 passages. ► The strength of quenched samples increased with increasing number of passes. ► Presence of particles in matrix caused cracks initiation and subsequent failure.