Preparation and mechanical properties of a composite by glass-forming alloy bonding aluminum oxide

A Cu47Zr47Al6/Al2O3 metallic glass composite is fabricated by the suction casting method. The Al2O3 particles are mixed equally into the Cu47Zr47Al6 amorphous alloy matrix during both the melting and cooling processes. The amorphous structure of Cu47Zr47Al6 metallic glass can be retained with no other intermetallic compounds were produced during the preparation process. The composite has excellent plasticity and undergoes work hardening, which is significantly increased when compared to the Cu47Zr47Al6 amorphous alloy. The introduction of Al2O3 particles leads to structural inhomogeneity, which results in the accretion and obstruction of shear bands during the deformation process. Bonding Al2O3 particles using an amorphous alloy is a good approach to improve the plasticity of metallic glass.

Automated summary

By mixing Al2O3 particles into the Cu47Zr47Al6 amorphous alloy matrix, a Cu47Zr47Al6/Al2O3 metallic glass composite is fabricated and shows improved plasticity and work hardening. The amorphous structure is retained with no intermetallic compounds produced, leading to enhanced overall performance of the composite material.