| Numéro |
J. Phys. Colloques
Volume 49, Numéro C6, Novembre 1988
35th International Field Emission Symposium / 35éme Symposium International d'Emission de Champ
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| Page(s) | C6-421 - C6-426 | |
| DOI | https://doi.org/10.1051/jphyscol:1988672 | |
35th International Field Emission Symposium / 35éme Symposium International d'Emission de Champ
J. Phys. Colloques 49 (1988) C6-421-C6-426
DOI: 10.1051/jphyscol:1988672
1 Department of Metallurgy and Science of Materials, Oxford University, Parks Road, GB-Oxford, OX1 3PH, Great-Britain
2 MIT, 77 Massachusetts Avenue, Cambridge, MA 02139, U.S.A.
J. Phys. Colloques 49 (1988) C6-421-C6-426
DOI: 10.1051/jphyscol:1988672
THE CHARACTERIZATION OF SPINODAL STRUCTURES IN DUPLEX CF3 STEELS
T.J. GODFREY1, M.G. HETHERINGTON2, J.M. SASSEN1 et G.D.W. SMITH11 Department of Metallurgy and Science of Materials, Oxford University, Parks Road, GB-Oxford, OX1 3PH, Great-Britain
2 MIT, 77 Massachusetts Avenue, Cambridge, MA 02139, U.S.A.
Abstract
Contingency tables, autocorrelation functions and a maximum likelihood method for estimating the amplitudes of composition fluctuations are applied to the study of the spinodal decomposition of a the ferritic component of a duplex stainless steel. The contingency tables are sensitive to the partitioning of alloying elements in this multi-component steel. Aged and unaged alloys could be more clearly distinguished using the autocorrelation function than using the composition profiles, but an accurate determination of the wavelength of the spinodal could not be made. The estimate of the amplitude of the spinodal using a maximum likelihood method was found to be suitable for parameterizing the decomposition.