Issue
J. Phys. Colloques
Volume 47, Number C3, Juillet 1986
International Workshop on Aperiodic Crystals
Page(s) C3-465 - C3-474
DOI https://doi.org/10.1051/jphyscol:1986347
International Workshop on Aperiodic Crystals

J. Phys. Colloques 47 (1986) C3-465-C3-474

DOI: 10.1051/jphyscol:1986347

STUDIES ON APERIODIC CRYSTALS IN Al-Mn AND Al-V ALLOYS BY MEANS OF TRANSMISSION ELECTRON MICROSCOPY

K. URBAN1, J. MAYER1, M. RAPP1, M. WILKENS1, A. CSANADY2 et J. FIDLER3

1  Max-Planck-Institut für Metallforschung, D-7000 Stuttgart 80, F.R.G.
2  Hungarian Aluminium Corporation, H-1389 Budapest, Hungary
3  Technische Universität Wien, A-1040 Wien, Austria


Abstract
Electron microscopy has been used to study quasicrystals and T phase in rapidly cooled Al-14at%Mn and Al-16at%V. The T phase can also be produced by interdiffusion in evaporated Al/Mn layers. Also in these experiments we have observed a new crystalline phase with structural elements related to the aperiodic crystals by a shear parallel to a particular symmetry direction. The phase transitions between the quasicrystalline or the T phase to the crystalline or amorphous phases were studied in situ in a high-voltage electron microscope.