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Topological instability, average electronegativity difference and glass forming ability of amorphous alloys

2008; Elsevier BV; Volume: 17; Issue: 4 Linguagem: Inglês

10.1016/j.intermet.2008.09.013

1879-0216

Marcelo Falção de Oliveira, Flavio Soares Pereira, Claudemiro Bolfarini, Cláudio Shyinti Kiminami, Walter José Botta Filho,

Glass properties and applications

In this paper, we report the remarkable agreement of the glass forming ability of binary alloys with a new criterion that combines the topological instability parameter (λ) and the average electronegativity difference among the elements of an alloy, assuming both exert a synergetic effect. The best glass forming compositions for Zr–Cu and Ti–Ni systems are well predicted by this new approach. Although the new criterion needs further refinement, it is concluded that the proposed approach is a promising and simple tool to guide and reduce the tedious and labour intensive work to find good glass former compositions in metallic systems.