Peritectic equilibrium in Fe-Co alloys
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Masaki Sumida
and
Wilfried Kurz
Abstract
Recent results of directional solidification experiments with Fe–Co alloys were not consistent with the presently accepted peritectic phase diagram. Therefore, the Fe-rich part of this phase diagram was re-examined. High-temperature gradient plane front solidification was carried out at a low velocity. After quenching of the specimen from the peritectic temperature, the compositions of the phases close to the solid/liquid interface were determined through electron probe microanalysis. Using these results together with previously published phase diagram information, an improved phase diagram is proposed with the peritectic equilibrium at Tp = 1774 K, Cδ = 17.7, Cγ = 18.1 and CL = 19.5 at.% Co.
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Collaboration of J. Stramke and B. Neal, both EPFL, with the experiments and metallography, and F. Bussy, University of Lausanne, with the EPMA measurements is gratefully acknowledged. The work has been performed in the frame of a Research program supported by the Swiss Government (Federal Office of Education and Science) and the European Space Agency (ESA).
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© 2002 Carl Hanser Verlag, München
Articles in the same Issue
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- Notifications/Mitteilungen
- Personal/Personelles
- DGM Training/DGM Fortbildung
- Conferences/Konferenzen
Articles in the same Issue
- Frontmatter
- Aufsätze/Articles
- Dilatometric study of the effect of soluble boron on the continuous and isothermal austenite decomposition in 0.15C–1.6Mn steel
- Use of duplex microstructures in steel for estimation of plastic deformation in high-speed machining chips
- Stability of strengthened niobium alloys in long-term high-temperature loading conditions
- Effect of rare-earth metals on the hot strength of HSLA steels
- Wear behaviour of Ni–Cr–Mo–V steel under dry sliding
- Thermodynamic calculation of the phase diagram of the Co–Nb–Ta system
- Peritectic equilibrium in Fe-Co alloys
- A thermodynamic description of the B–Co system: modeling and experiment
- Thermodynamic interpretation of thermoelectric phenomena
- Unit cell volumes of the silicon- and germanium-containing solid solutions based on the 3d bcc transition metals
- Artificial silicide barrier coatings in titanium matrix composites
- Notifications/Mitteilungen
- Personal/Personelles
- DGM Training/DGM Fortbildung
- Conferences/Konferenzen
