Abstract
Phase stability and transformations of the icosahedral phase (I-phase) in a 41.5Zr41.5Ti17Ni alloy were investigated using melt-spun ribbons and arc-melted bulk samples. A perfect I-phase can be formed directly from liquid through the melt-spinning technique. The I-phase formed in the ribbon is thermodynamically stable and transforms to W-phase, a 1/1 rational approximant above 565 °C. Formation of the perfect I-phase during annealing treatment of the arc-melted sample is very sluggish. Various types of approximants exist as intermediate states for the transformation of crystalline phases to a perfect I-phase.
| Original language | English |
|---|---|
| Pages (from-to) | 892-897 |
| Number of pages | 6 |
| Journal | Journal of Materials Research |
| Volume | 15 |
| Issue number | 4 |
| DOIs | |
| State | Published - Apr 2000 |