Abstract
The homogenization kinetics of a segregated binary alloy have been studied using electron probe microanalysis after annealing for various times at several temperatures. The concentration and number of microsegregation nodes are quantitatively examined in detail and compared with the evolution of the whole solidification substructure revealed by X-ray images and metallography. The comparison leads to the conclusion that nodes are representative of all solidification substructure and can be taken as a characteristic. The combined study also shows that nodes dissolve in two stages, starting preferentially along cell walls and continuing later in a more uniform fashion. However, a single activation energy near that for bulk diffusion is obtained for the whole process, showing that the homogenization is a collective process and volume diffusion limited.
Similar content being viewed by others
References
H. Biloni, G. F. Bolling, and G. S. Cole.Trans. TMS-AIME, 1966, vol. 236, p. 930.
V. V. Damiano and G. S. Tint:Acta Met., 1961, vol. 9, p. 177.
K. G. Davis:Can. Met. Quart., 1968, vol. 7, p. 93.
S. Siegel:Non-parametric Statistics for the Behavioral Sciences, McGraw Hill Book Company, New York 1956.
C. Calvo and H. Biloni: Comisión Nacional de Energía Atómica Buenos Aires, Argentina, to be published;Segregación Celular Dendrítica En Aleaciones Al-1 pct Cu, Publicación Interna Número PMM/C-25.
H. Biloni:Can. J. Phys., 1961, vol. 39, p. 1501.
H. Biloni, G. F. Bolling, and H. A. Domian:Trans. TMS-AIME, 1965, vol. 233, p. 1926.
W. J. Dixon and F. J. Massey.Introduction to Statistical Analysis. McGraw Hill Book Company, New York, 1957.
D. Fainstein: Thesis, Universidad Nacional de Cuyo, Argentina, 1970.
H. Espejo: Comision Nacional de Energía Atómica, Buenos Aires, Argentina, private communication, 1969.
J. B. Murphy:Acta Met., 1961, vol. 9, p. 563.
I. Obinata, O. Izumi, D. Oelschlagel, and A. NagataTrans. Japan Inst. Met., 1969, vol. 10, p. 107.
W. A. Tiller:J. Appl. Phys., 1958, vol. 29, p. 611.
J. A. Coll. Rapport de Stage, Centre d'Etudes Nucleaires de Saclay, France, 1966.
S. N. Singh and M. C. Flemings:Trans. TMS-AIME, 1969, vol. 245, p. 1803.
S. N. Singh, B. P. Bardes, and M. C. Flemings:Met. Trans., 1970, vol. 1, p. 1383.
R. A. Tanzilli and R. W. Heckel:Trans. TMS-AIME, 1968, vol. 242, p. 2313.
R. A. Tanzilli and R. W. Heckel:Trans. TMS-AIME, 1969, vol. 245, p. 1363.
D. L. Baty, R. A. Tanzilli, and R. W. Heckel:Met. Trans., 1970, vol. 1, p. 1651.
H. B. Aaron, D. Fainstein, and G. R. Kotler:J. Appl. Phys., 1970, vol. 41, p. 4404.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Fainstein, D., Bolling, G.F. & Biloni, H. Homogenization of primary microsegregation. Metall Trans 2, 1315–1323 (1971). https://doi.org/10.1007/BF02913354
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02913354