Abstract
Glass formation has been systematically studied in melt-spun Al-rich Al-Ni-RE (RE = La, Ce, Pr, Nd and Mm; Mm = misch metal) alloys by navigating the compositions following the observation of microstructure evolution in the resulting ribbons. The optimum glass-forming regions are similarly located around Al85Ni10RE5 and found in the centre of the composites with primary phase -Al, Al11RE3 and Al3Ni. The similarities in the critical cross-section below which a component is fully amorphous and the optimum compositions in these Al-Ni-RE systems are interpreted in terms of their competing crystalline phases and thermodynamic properties. Interestingly, it is indicated that Ni content is markedly higher than RE content in the best glass-forming alloys, which may be associated with strong interaction between Ni-Al atom pairs and the dense packing due to Ni-centred clusters.
| Original language | English |
|---|---|
| Pages (from-to) | 4211-4228 |
| Number of pages | 18 |
| Journal | Philosophical Magazine |
| Volume | 87 |
| Issue number | 27 |
| DOIs | |
| State | Published - Sep 2007 |
| Externally published | Yes |
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