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Iowa State University

Series

Metallurgy

1992

Articles 1 - 1 of 1

Full-Text Articles in Physics

Twinned One-Dimensional Quasicrystals In Bridgman-Grown Al-Si-Cu-Co Alloys, L. X. He, Thomas A. Lograsso, Alan I. Goldman Jul 1992

Twinned One-Dimensional Quasicrystals In Bridgman-Grown Al-Si-Cu-Co Alloys, L. X. He, Thomas A. Lograsso, Alan I. Goldman

Ames Laboratory Publications

Single grains of Al60Si2Cu18Co20 with a decaprismatic morphology were grown by the Bridgman method and studied by transmission electron microscopy and x-ray diffraction. Although the diffraction patterns of these grains superficially resemble that of a decagonal quasicrystal, a closer inspection reveals that they are composed of tenfold twins of a one-dimensional quasicrystal along with small domains of three crystalline approximant phases.