Abstract
The chemical enthalpies of formation of the liquid alloy, ∆Hc,l, of Cu–Zr-rich Cu–Zr–Al bulk metallic glasses (BMGs) in a broad composition region have been calculated, in order—to investigate the effect of the chemical bonding on the thermal stability of these BMGs, based on the efficient cluster-packing model. It is found that the Al–Zr bonding has more important effect than the Cu–Zr bonding on the thermal stability of Cu–Zr-rich Cu–Zr–Al BMGs with the same Cu/Zr content ratio, and the thermal stability of Cu–Zr-rich Cu–Zr–Al BMGs has close correlation with the chemical stability. The results could be useful for understanding the underlying mechanism of crystallization of metallic glasses.
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This research was supported by Hunan University of Arts and Science, China, grant no. 13101009.
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Ailong Zhang, Chen, D., Chen, Z. et al. Effect of Chemical Bonding on the Thermal Stability of Cu–Zr-Rich Cu–Zr–Al Bulk Metallic Glasses. Phys. Metals Metallogr. 120, 667–671 (2019). https://doi.org/10.1134/S0031918X19070020
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DOI: https://doi.org/10.1134/S0031918X19070020