Influência de adições de prata na cinética de precipitação da liga Cu-5%Al
Main Article Content
Abstract
A influência de adições de 2%, 4%, 6%, 8% e 10% de prata, em massa, na cinética de formação e precipitação de precipitados ricos em prata, na liga Cu-5% Al foi estudada através de medidas de variação da microdureza com a temperatura e o tempo. Os resultados obtidos indicaram que a presença da prata aumenta consideravelmente a dureza da liga e também interfere na cinética de precipitação, com uma mudança mecanística no processo que está relacionada com o teor de prata das ligas.
Metrics
Article Details
This work is licensed under a Creative Commons Attribution 4.0 International License.
The corresponding author transfers the copyright of the submitted manuscript and all its versions to Eclet. Quim., after having the consent of all authors, which ceases if the manuscript is rejected or withdrawn during the review process.
When a published manuscript in EQJ is also published in other journal, it will be immediately withdrawn from EQ and the authors informed of the Editor decision.
Self-archive to institutional, thematic repositories or personal webpage is permitted just after publication. The articles published by Eclet. Quim. are licensed under the Creative Commons Attribution 4.0 International License.
References
ADORNO, A. T., BEATRICE, C. R. S., BENEDETTI, A. V., CABOT, P. L. Silver dissolution on copper-based alloys. J. Mat. Sci., v. 28, p. 411-4, 1993. [ Links ]
ADORNO, A. T., CILENSE, M., GARLIPP, W. Mechanical properties and precipitation energy of the Cu-Al-Ag (5.4%Al-5.2%Ag) alloy. J. Mat. Sci. Lett., v.6, p.163-4, 1987. [ Links ]
___________. Phase relationships in the copper-silver-aluminium ternary system, near the copper-rich corner. J. Mat. Sci. Lett., v.8, p.1294-7, 1989. [ Links ]
ARRUDA, G. J., ADORNO, A. T., MAGNANI, R., BEATRICE, C. R. S. Influence of silver additions on the kinetics of eutectoid decomposition in Cu-Al and Cu-Al-Ag alloys. Materials Letters, 1997. (Aceito para publicação). [ Links ]
BORG, R.J., DIENES, G. J. The physical chemistry of solids. San Diego: Academic Press, 1992. [ Links ]
CHRISTIAN, J.W. The theory of transformations in metals and alloys-part I. Oxford: Pergamon, 1975. [ Links ]
MAGNANI, R., ADORNO, A. T. Stability of the Johnson-Mehl-Avrami equation parameters. J. Mat. Sci. v. 30, p. 4101-2, 1995. [ Links ]
MASSALSKI, T. B. (Ed.) Binary alloy phase diagrams. Ohio: American Society for Metals, 1992, v.1, p.141. [ Links ]
PANSERI, C., LEONI, M. Il diagramma di stato ternario rame-alluminio-argento nella zona ad elevata percentuale di rame. Alluminio, v. 30, n. 6, p. 289-98, 1961. [ Links ]
PHILIP, T. V., MACK, J. D. Effect of ternary elements on the eutectoid transformation in aluminum bronze. Trans. AIME, v. 224, n. 1, p. 34-42, 1962. [ Links ]
SEEBER, F. A., WILD, C. J. Nonlinear regression. New York: John Wiley, 1989. [ Links ]