Journal
CORROSION SCIENCE
Volume 182, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2021.109275
Keywords
Metallic glass; Oxide interface; Oxidation; Diffusion; Uniaxial tension
Funding
- National Natural Science Foundation of China [51805181, 51705168]
- National Science Fund for Distinguished Young Scholars of China [51725504]
- Fundamental Research Funds for the Central Universities [2020kfyXJJS049]
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Introducing a layer of oxygen into Cu64Zr36 MG for interfacial bonding controlled by ionic drift through the oxide, and deteriorating short-range ordering of MG, while uniaxial tensile tests show favorable ductility with reduced ultimate tensile strength.
A layer of oxygen is introduced into a Cu64Zr36 MG to achieve interfacial bonding. The oxidation kinetics, diffusion behavior, local structure, and mechanical performance of the oxide-bonded MG were investigated via molecular dynamics simulations. The growth of the oxide layer follows the inverse-logarithmic law, indicating that this process is controlled by the ionic drift through the oxide in response to electric fields. The introduction of oxygen atoms seriously deteriorates the short-range ordering of MG by suppressing the formation of icosahedral clusters. Uniaxial tensile tests indicate that the oxide-bonded MG has favorable ductility, while its ultimate tensile strength is reduced.
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