Stoichiometry of Quasicrystalline Al–Mn
- 15 September 1985
- journal article
- letter
- Published by Physical Society of Japan in Journal of the Physics Society Japan
- Vol. 54 (9) , 3217-3219
- https://doi.org/10.1143/jpsj.54.3217
Abstract
Electron microscopy has shown that in rapidly solidified Al–(14–20) at.%Mn alloys a new metastable phase of a quasicrystalline phase with the icosahedral symmetry, which was first discovered by Shechtman et al . (Phys. Rev. Lett. 53 (1984) 1951), is formed but with a considerable amount of fcc Al second phase in alloys with lower Mn content. From the change with Mn content of the intensity of fcc Al lines in the powder X-ray diffraction spectrum, the stoichiometry of the Al–Mu quasicrystalline phase is concluded to be nearly Al 4 Mn (∼20.5 at.%Mn), being at variance with the reported composition of Al 6 Mn.Keywords
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