Effects of equal channel angular pressing and heat treatments on the microstructures and mechanical properties of selective laser melted and cast AlSi10Mg alloys

Abstract This study investigated the impact of equal channel angular pressing (ECAP) combined with heat treatments on microstructure and mechanical properties AlSi10Mg alloys fabricated via selective laser melting (SLM) gravity casting. Special attention was directed towards determining effect post-fabrication microstructural evolution alloy using two different routes. Three initial conditions were considered prior to ECAP deformation: (1) as-cast in solution treated (T4) condition, (2) SLM T4 (3) subjected low-temperature annealing. Light microscopy, transmission electron X-ray diffraction line broadening analysis, backscattered analysis used characterize microstructures before after ECAP. The results indicated that followed by annealing led superior properties, relative other conditions. Microscopic analyses revealed partial-cellular structure contributed strong work hardening. behavior enhanced material’s strength because accumulation geometrically necessary dislocations during deformation.