Mechanical properties and microstructures of Al–1Fe–(0-1)Zr bulk nano-crystalline alloy processed by mechanical alloying and spark plasma sintering

Abstract

► A yield strength of ∼850 MPa was achieved with 19% strain in compression. ► The high strength due to the nanosized Al–Fe grains and fine Al 6 Fe particles. ► A compressive yield strength of 455 MPa and elongation of 16.7% at 250 °C. A high strength bulk nano-crystalline Al–1Fe–(0-1)Zr alloys were processed by mechanical alloying and spark plasma sintering . The high yield strength of ∼850 MPa was achieved in an Al–1Fe–0.5Zr alloy with 19% strain in compression. The high strength was attributed to the nanosized Al–Fe grains and the dispersion of fine Al 6 Fe particles. High temperature compressive yield strength of 455 MPa and elongation of 16.7% was achieved at 250 °C.