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A Study of the Phase Decomposition of Fe-Ni-Al-Mo Alloys

Published online by Cambridge University Press:  28 February 2011

M.K. Miller ,
M.G. Hetherington ,
J.R. Weertman  and
H.A. Calderon
M.K. Miller
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6376
M.G. Hetherington
Affiliation:
Department of Materials, University of Oxford, Oxford, OX 1 3PH, Great, Britain
J.R. Weertman
Affiliation:
Department of Materials Science and Engineering, Northwestern University, Evanston, Il 60208
H.A. Calderon
Affiliation:
Department of Materials Science and Engineering, Northwestern University, Evanston, Il 60208

Abstract

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The aging of β′ NiAl precipitates in ferritic Fe-Ni-Al alloys has been studied by transmission electron microscopy (TEM) and atom-probe field-ion microscopy (APFIM). The addition of Mo alters the lattice parameter of the phases and segregation of Mo to the interface between the matrix and the particles may alter the interfacial energy. The compositions of the matrix, precipitates and interfaces have been measured by TEM and APFIM. The results are compared.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 186: Symposium I – Alloy Phase Stability and Design , 1990 , 219
Copyright
Copyright © Materials Research Society 1991

References

1. Calderon, H.A., Weertman, J.R. and Fine, M.E., Proc. 2nd International Conference on Solid-Solid Phase Transformations, Phase Transformation, 87, Cambridge, July 1987, ed. Lorimer, G.W., pub. Institute of Metals, England, 495 (1988).Google Scholar
2. Calderon, H.A., Fine, M.E. and Weertman, J.R., Metall. Trans., 19A, 1131 (1988).Google Scholar
3. Miller, M.K. and Hetherington, M.G., J. de Phys., 50–C8, 425, (1989).Google Scholar