Abstract
Transmission electron microscopy was used to study the growth kinetics of precipitate-free zones in aging Cu-Al-Co alloys. The formation of zones was associated with the precipitation of the CoAl intermetallic compound at grain boundaries and dissolution of metastable cobalt precipitates near the boundary. The growth of the zone width was found to be of a two-stage character. The activation energy of the zone growth process was determined and proved to be identical in both stages. The first stage is associated with the presence of a supersaturated solid solution of cobalt. The zone growth kinetics in the second stage at 600 and 650°C is nearly linearly dependent on time.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
Literature cited
M. Abe, K. Asano, and A. Fujiwara, Metall. Trans.,4, No. 6, 1499 (1973).
I. M. Lifshits and V. V. Slezov, Zh. Eksp. Teor. Fiz.,35, 479 (1958).
H. B. Aaron and R. J. Aaronson, Acta Metall.,16, 789 (1968).
A. D. Braidford and H. B. Aaron, J. Appl. Phys.,40, 1702 (1969).
H. B. Aaron and H. J. Aaronson, Acta Metall.,18, 699 (1970).
J. Goldman, H. J. Aaronson, and H. B. Aaron, Metall. Trans.,1, 1805 (1970).
V. A. Payuk, A. D. Korotaev, and L. S. Bushnev, Izv. Vyssh. Uchebn. Zaved., Fiz., No. 7, 99 (1974).
Author information
Authors and Affiliations
Additional information
Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 4, pp. 75–80, April, 1979.
Rights and permissions
About this article
Cite this article
Bushnev, L.S. Growth kinetics of precipitate-free zones near grain boundaries in Cu-Al-Co alloys. Soviet Physics Journal 22, 405–409 (1979). https://doi.org/10.1007/BF00895662
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00895662