The quasicrystalline transformation in the AlCr system Academic Article uri icon

abstract

  • Amorphous Al80Cr20 films were made by coevaporation and by room temperature ion irradiation of the coevaporated films. The amorphous phase was transformed into the quasicrystalline state through two routes: thermal and ion beam assisted anneal. The intensity of the quasicrystalline electron diffraction pattern increases continuously within the annealing temperature range from 547to 607C. The starting state of the films (as-deposited or ion-irradiated codeposited) had no effect on the thermal transformation to the quasicrystalline state. Ion irradiation of the amorphous phase at 200C produces a more complete set of icosahedral diffraction lines. Icosahedral AlCr has the same reciprocal lattice spacings as icosahedral AlMn.

published proceedings

  • Journal of Materials Research

author list (cited authors)

  • Lilienfeld, D. A., Nastasi, M., Johnson, H. H., Ast, D. G., & Mayer, J. W.

citation count

  • 33

complete list of authors

  • Lilienfeld, DA||Nastasi, M||Johnson, HH||Ast, DG||Mayer, JW

publication date

  • April 1986