Obtaining Composite Materials of Al–Fe₆₆Cr₁₀Nb₅B₁₉ Metallic Glass Characterized by Anisotropy of Mechanical Properties

This paper describes the production of aluminum matrix composite materials containing Fe₆₆Cr₁₀Nb₅B₁₉ metallic glass particles by successive mechanical activation of initial powders in a planetary mill and spark sintering. Sintering at 540°C  is accompanied by complete or partial conversion of metallic glass particles into a Fe₄Al₁₃ intermetallic compound. Composite materials sintered from an Al + 20%(vol.)Fe₆₆Cr₁₀Nb₅B₁₉ mixture are characterized by anisotropy of mechanical properties. Thus, compressive yield strength, Vickers microhardness, and failure strain in the pressing direction during sintering are 550 MPa, 200 HV, and 14.2%, respectively; these parameters in a direction perpendicular to the pressing direction reach 740 MPa, 250 HV, and 2.2%.