Relationship of structural disorder and stability of supercooled liquid state with glass-forming ability of metallic glasses
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866913855694700544 |
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| author | Cui, J. B. Konchakov, R. A. Afonin, G. V. Makarov, A. S. Lyu, G. J. Qiao, J. C. Kobelev, N. P. Khonik, V. A. |
| author_facet | Cui, J. B. Konchakov, R. A. Afonin, G. V. Makarov, A. S. Lyu, G. J. Qiao, J. C. Kobelev, N. P. Khonik, V. A. |
| contents | We performed calorimetric studies of 26 metallic glasses and calculated the excess entropy and excess enthalpy with respect to their counterpart crystals. On this basis, we introduced a dimensionless entropy-based parameter σscl, which characterizes structural disordering and stability of the supercooled liquid state upon heating. A very good correlation of σscl with literature data on the critical cooling rate Rc and critical diameter Dmax of metallic glasses is shown. We also introduced another dimensionless parameter ηscl based on the excess enthalpy of glass and showed that ηscl provides equally good correlation with Rc and Dmax. Possible relationship of structural disordering and glass-forming ability in the supercooled liquid range with the defect structure of glass is discussed. The obtained results provide a new window for the understandingof the glass-forming ability of metallic glasses. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2505_17874 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Relationship of structural disorder and stability of supercooled liquid state with glass-forming ability of metallic glasses Cui, J. B. Konchakov, R. A. Afonin, G. V. Makarov, A. S. Lyu, G. J. Qiao, J. C. Kobelev, N. P. Khonik, V. A. Disordered Systems and Neural Networks We performed calorimetric studies of 26 metallic glasses and calculated the excess entropy and excess enthalpy with respect to their counterpart crystals. On this basis, we introduced a dimensionless entropy-based parameter σscl, which characterizes structural disordering and stability of the supercooled liquid state upon heating. A very good correlation of σscl with literature data on the critical cooling rate Rc and critical diameter Dmax of metallic glasses is shown. We also introduced another dimensionless parameter ηscl based on the excess enthalpy of glass and showed that ηscl provides equally good correlation with Rc and Dmax. Possible relationship of structural disordering and glass-forming ability in the supercooled liquid range with the defect structure of glass is discussed. The obtained results provide a new window for the understandingof the glass-forming ability of metallic glasses. |
| title | Relationship of structural disorder and stability of supercooled liquid state with glass-forming ability of metallic glasses |
| topic | Disordered Systems and Neural Networks |
| url | https://arxiv.org/abs/2505.17874 |