Role of different factors in the glass-forming ability of binary alloys

• Published in: Indian journal of engineering and materials sciences 2015-02, Vol.50 (4), p.1783-1793
• Main Authors: Louzguine-Luzgin, D. V., Chen, N., Churymov, A. Yu, Louzguina-Luzgina, L. V., Polkin, V. I., Battezzati, L., Yavari, A. R.
• Format: Article
• Language: English
• Subjects: Alloy systems; Alloys; Binary alloys; Binary systems; Characterization and Evaluation of Materials; Chemical Sciences; Chemistry and Materials Science; Classical Mechanics; Cooling rate; Crystallography and Scattering Methods; Degassing of metals; Enthalpy; Fragility; Glass; Glass formation; Glassy; Guidelines; Material chemistry; Materials Science; Melt spinning; Melts; Metals; Original Paper; Polymer Sciences; Solid Mechanics; Specialty metals industry
• ISSN: 0022-2461; 0971-4588; 1573-4803; 0975-1017
• DOI: 10.1007/s10853-014-8741-y

In the present work, we discuss the glass-forming ability of various binary alloys in which the glassy phase was not formed even by melt spinning technique with high cooling rate of the melt up to 1 MK/s (some consisted of partly glassy phase), though by commonly accepted guidelines, these alloys could be as good glass-formers as many other binary glasses. The alloys studied belong to binary systems with multiple eutectics; the constituent elements have a negative enthalpy of mixing, and a significant variability of atomic size differences is observed from system to system. The results indicate the necessity of taking into account simultaneously various factors influencing the glass-forming ability including melt fragility.