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18R to 2H Martensite Transformation in A Cu-Zn-Al Alloy

Published online by Cambridge University Press:  21 February 2011

D. Rios Jara
Affiliation:
Groupe d'Etudes de Métallurgie Physique et de Physique des Matériaux, L.A. 341, Institut National des Sciences Appliquées, Bâtiment 502, 69621 Villeurbanne Cedex, France Instituto de Investigacion de Materiales-U.N.A.M., Mexico, D.F.
M. Morin
Affiliation:
Groupe d'Etudes de Métallurgie Physique et de Physique des Matériaux, L.A. 341, Institut National des Sciences Appliquées, Bâtiment 502, 69621 Villeurbanne Cedex, France
G. Guénin
Affiliation:
Groupe d'Etudes de Métallurgie Physique et de Physique des Matériaux, L.A. 341, Institut National des Sciences Appliquées, Bâtiment 502, 69621 Villeurbanne Cedex, France
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Abstract

An unexpected 18R martensite to martensite transformation was obtained in Cu-Zn-Al alloy during the training process for 18R single crystal preparation: this later was induced from a β1 single crystal by application of a constant tensile force at room temperature and by lowering the temperature until β1 -->18R transformation occurs. At this condition, and after several cycles, some plates of a new phase were observed to appear in a sudden way inside the 18R single crystal region. By studying the transformation characteristics as given by elongation temperature curves and trace analysis we conclude that this new phase plates are 2H martensite.

Type
Research Article
Copyright
Copyright © Materials Research Society 1984

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References

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