Journal Articles Scripta Materialia Year : 2024

Influence of Zr element on the atomic structure of Al-Cu alloy liquid

Saichao Cao
Mingxu Xia
  • Function : Author
Long Zeng
Pengfei Yu
  • Function : Author
Yimeng Zhao
Wenquan Lu
  • Function : Author
Jianguo Li
  • Function : Author

Abstract

The correlation between structure and glass-forming ability in multicomponent alloys is a long-standing puzzle due to the complexity of compositions. In this work, Al 77.8 Cu 22.2 and Al 70 Cu 20 Zr 10 amorphous alloy liquids were investigated by combining high-energy X-ray diffraction at a synchrotron facility, ab-initio molecular dynamics and reverse Monte Carlo simulations. The short-and medium-range order structures of two alloy liquids were analyzed and compared. The results suggest that the glassforming ability of Al-Cu-Zr alloy liquid is not related to the content of icosahedral short-range order, but to the diversity of cluster types and the uniformity of cluster content distribution, and the structural heterogeneity and correlation of clusters with high five-fold symmetry. These findings reveal the role of Zr element in enhancing the glass-forming ability of Al-Cu alloy liquid, and deepen the understanding of Albased metallic glasses formation.

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hal-04909462 , version 1 (23-01-2025)

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Saichao Cao, Mingxu Xia, Noel Jakse, Long Zeng, Pengfei Yu, et al.. Influence of Zr element on the atomic structure of Al-Cu alloy liquid. Scripta Materialia, 2024, 248, pp.116143. ⟨10.1016/j.scriptamat.2024.116143⟩. ⟨hal-04909462⟩

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