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Structure Transformations of the Decagonal and Icosahedral Phases in Quaternary Alloys.

Published online by Cambridge University Press:  28 February 2011

R. Perez
Affiliation:
Laboratorio de Cuernavaca Instituto de, Fisica UNAM P. O. Box 139–B 62191 Cuernavaca, Mor. MEXICO
J. Reyes-Gasga
Affiliation:
Laboratorio de Cuernavaca Instituto de, Fisica UNAM P. O. Box 139–B 62191 Cuernavaca, Mor. MEXICO
M. Jose-Yacaman
Affiliation:
Laboratorio de Cuernavaca Instituto de, Fisica UNAM P. O. Box 139–B 62191 Cuernavaca, Mor. MEXICO
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Abstract

An investigation of the phase transformations experienced by the decagonal and icosahedral phases in two different quaternary -alloys is carried out. The transformation in the decagonal phase of Al-Cu-Co-Si alloy is induced by the electron radiation in a transmission electron microscope. However, in the icosahedral phase of Al-Cu-Co-Fe alloy this transformation is induced by annealing. Electron diffraction patterns obtained from both phases suggest that the deformation mechanism involved in these kind of transitions is related with twinning

Type
Research Article
Copyright
Copyright © Materials Research Society 1992

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References

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