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Licensed Unlicensed Requires Authentication Published by De Gruyter December 7, 2021

Phase Transformations in Silver-Zinc Alloys by Mechanical Deformation

  • Nesrin Tokay and Okyay Alpaut

Abstract

The β' phase obtained by quenching Ag-Zn alloys having composition around 50 at.% Zn were transformed to the ζ phase by mechanical deformation. Aging of the partially ordered ζ structure caused the reversion to the ordered body-centered cubic β' structure. The rate of the reversion which has been measured for alloys having compositions from 48.0 to 50.9 at.% Zn was found to be dependent on both temperature and composition. The rate of the transformation increased exponentially with increasing temperature. It was observed that the reversion rate was the greatest for the AgZn compound and decreased for the other alloys for a definite temperature. The activation energy of the process was found to lie between 58.8 and 99.4 kJ mol–1 for the alloys studied.


N. Tokay, O. Alpaut, Hacettepe University Faculty of Science Chemistry Department 06532 Beytepe Ankara, Turkey

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Received: 1996-10-04
Published Online: 2021-12-07

© 1997 Carl Hanser Verlag, München

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