Mechanical properties of a new class of metallic glasses based on aluminum

Abstract

The mechanical properties (i.e., tensile fracture strength and Young’s modulus) of eight different alloys of a new class of metallic glasses containing up to 90 at. % aluminum are reported along with crystallization temperatures of these alloys. The Al₉₀Fe₅Ce₅ material has a tensile fracture strength of 940 MPa (1 MPa=145 psi), while two others (Al₈₇Fe_8.7Gd_4.3 and Al₈₇Ni_8.7Y_4.3) exceed 800 MPa. Young’s modulus measurements for three of these exceed 60 GPa with a high value of 66 GPa for the Al₉₀Fe₅Ce₅ glass. These unusually high strengths of the aluminum glasses can be of significant importance in obtaining high‐strength, low‐density materials.