Production of quasicrystals and crystalline approximants in the Al-Pd-(Fe,Ru,Os) systems

Authors
Shibuya, T Asao, T Tamura, M Tamura, R Takeuchi, S
Citation
T. Shibuya et al., Production of quasicrystals and crystalline approximants in the Al-Pd-(Fe,Ru,Os) systems, MAT SCI E A, 294, 2000, pp. 61-64
Citations number
14
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN journal
09215093 → ACNP
Volume
294
Year of publication
2000
Pages
61 - 64
Database
ISI
SICI code
0921-5093(200012)294:<61:POQACA>2.0.ZU;2-R
Abstract
We report the formation regions of single icosahedral phases (i-phase) and crystalline approximants in the Al-Pd-(Fe,Ru,Os) ternary systems. In the Al -Pd-Fe system, a single F-type i-phase is produced in a narrow composition region around Al71Pd18Fe11 in melt-spun ribbon samples, but it transforms t o a (1/0)-cubic approximant on annealing at 600 degreesC. In the Al-Pd-(Ru, Os) system, a structurally ordered i-phase is obtained on heating the melt- spun samples at a high temperature of 1000 degreesC for Ih in a composition region along e/a = 1.8, but after prolonged annealing at the same temperat ure the i-phase transforms to a (1/0)-cubic approximant. A bulk single i-ph ase is also produced by annealing of the as-cast. Al73Pd15Ru12 alloy at 100 0 degreesC. (C) 2000 Elsevier science B.V. All rights reserved.