Processing of bulk metallic glasses with high strength and large compressive plasticity in Cu50Zr50

• DOI: 10.1016/j.scriptamat.2005.11.063
• Publication Date: 2005-12-28T10:03:58Z
• Authors: Z.W. Zhu; H.F. Zhang; W.S. Sun; B.Z. Ding; Z.Q. Hu
• Keywords: Hardening (computing)

Fully metallic glassy rods of 1.5 mm diameter were successfully prepared in binary Cu50Zr50 alloy by copper mould injection casting method. The samples were characterized by X-ray diffraction, differential scanning calorimetry and high-resolution transmission electron microscopy (HRTEM). Room temperature uniaxial compression tests for the Young’s modulus, fracture strength and total strain yield values of about 88 GPa, 2550 MPa and 11.7%, respectively. Significant work hardening is also observed from the stress–strain curves. The 1–2 nm scale medium-range ordering revealed by HRTEM investigations is thought to be responsible for the high strength, significant work hardening and large plasticity of the samples.