Numéro
J. Phys. Colloques
Volume 48, Numéro C6, Novembre 1987
34th International Field Emission Symposium / 34ème Symposium International d'Emission de Champ
Page(s) C6-517 - C6-522
DOI https://doi.org/10.1051/jphyscol:1987685
34th International Field Emission Symposium / 34ème Symposium International d'Emission de Champ

J. Phys. Colloques 48 (1987) C6-517-C6-522

DOI: 10.1051/jphyscol:1987685

QUANTITATIVE STUDY OF SOLID STATE REACTIONS BY ATOM PROBE MICROANALYSIS

G.D.W. Smith

Department of Metallurgy and Science of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, U.K.


Abstract
A review is presented of some quantitative studies of phase transformation behaviour in steels, carried out using the techniques of field ion microscopy and atom probe microanalysis. It is demonstrated that careful measurement of alloy element redistribution can give direct insight into the mechanism of the pearlite reaction. Also, the measurement of carbon distribution on the atomic scale provides valuable evidence concerning the mechanism of the bainite reaction, and reveals that a spinodal mechanism is operating during the low temperature ageing of high-carbon ferrous martensite.