Abstract
A melt-quenched icosahedral (i-) phase with a composition such as Al74Pd17Mn9 close to but is deviated slightly from the ideal composition (Al70Pd20Mn10) of stable i-AlPdMn alloy, containing significant phason strains. It transforms to a phason-free i-phase accompanied by crystallization upon annealing at sufficiently high temperature. The composition of the i-grains approaches the ideal after the transformation. Such phason strain relaxation was not observed in the melt-quenched Al75Pd15Mn10i-phase, for which composition considerably deviates from the ideal composition; crystallization occurs without redistribution in the composition. It was suggested that a highly stable i-phase occurs in the ground state when it has the ideal composition.
Original language | English |
---|---|
Pages (from-to) | L419-L422 |
Journal | Japanese journal of applied physics |
Volume | 31 |
Issue number | 4 |
DOIs | |
Publication status | Published - 1992 Apr |
Externally published | Yes |
Keywords
- Aluminum-palladium-manganese
- Crystallization
- Icosahedral phase
- Ideal composition
- Phason relaxation
ASJC Scopus subject areas
- Engineering(all)
- Physics and Astronomy(all)