On the transitions of the icosahedral and decagonal phases towards equilibrium phases in Al—Cu—Mn alloys
- 1 December 1991
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine Letters
- Vol. 64 (6) , 343-348
- https://doi.org/10.1080/09500839108215114
Abstract
In rapidly solidified Al—Cu—Mn alloys, the quasicrystalline phases (icosahedral and decagonal) are metastable. In this Letter, the transitions of the icosahedral (i) and decagonal (d) phases towards the equilibrium periodic phases have been studied by means of differential thermal analysis, X-ray diffraction and transmission electron microscopy. The nature of the crystalline phases formed on heating was in agreement with the equilibrium phase diagram (Köster et al. 1966). Evidence is shown of a hierarchy of stability between the i and d phases: on heating, the i phase is transformed into the d phase.Keywords
This publication has 7 references indexed in Scilit:
- Long-range chemical ordering in Al-Cu-Fe, Al-Cu-Mn, and Al-Cu-Cr quasicrystalsJournal of Materials Research, 1990
- New quasicrystals in Al65Cu20M15 (M = Cr, Mn or Fe) systems prepared by rapid solidificationJournal of Materials Science Letters, 1988
- Mean-field-theory study of the energetics of icosahedral, decagonal, and dodecagonal quasicrystalsPhysical Review B, 1988
- The Ag−Al (Silver-Aluminum) systemBulletin of Alloy Phase Diagrams, 1987
- X-ray diffraction and Mössbauer-effect study of the decagonal ( alloyPhysical Review B, 1987
- The use of new PHACOMP in understanding the solidification microstructure of nickel base alloy weld metalMetallurgical Transactions A, 1986
- Indexing of icosahedral quasiperiodic crystalsJournal of Materials Research, 1986