Abstract
The α + γ two-phase fields of the Fe-Ni and Fe-Ni (P saturated) phase diagrams have been determined in the composition range 0 to 60 wt pet Ni and in the temperature range 700 to 300 °C. The solubility of Ni in (FeNi)3P was measured in the same temperature range. Homogeneous alloys were austenitized and quenched to form α2, martensite, then heat treated to formα (ferrite) + γ (austenite). The compositions of the α and γ phases were determined with electron microprobe and scanning transmission electron microscope techniques. Retrograde solubility for the α/(α + γ) solvus line was demonstrated exper-imentally. P was shown to significantly decrease the size of the α + γ two-phase field. The maximum solubility of Ni in α is 6.1 ± 0.5 wt pct at 475 °C and 7.8± 0.5 wt pct at 450 °C in the Fe-Ni and Fe-Ni (P saturated) phase diagrams, respectively. The solubility of Ni in α is 4.2 ± 0.5 wt pct Ni and 4.9 ± 0.5 wt pct Ni at 300 °C in the Fe-Ni and Fe-Ni (P saturated) phase diagrams. Ternary Fe-Ni-P isothermal sections were constructed between 700 and 300 °C.
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J. I. Goldstein and J. M. Short:Geochim. Cosmochim. Acta, 1967, vol. 31, pp. 1001–23.
A. E. Moren and J. I. Goldstein:Earth Planet. Sci. Lett., 1978, vol.40, pp. 151–61.
J. Willis and J. T. Wasson:Earth Planet Sci. Lett., 1978, vol. 40, pp. 141–50.
J. I. Goldstein and R. E. Ogilvie:Trans. TMS-AIME, 1965, vol 233, pp. 2083–87.
A. S. Doan, Jr. and J. I. Goldstein:Met. Trans., 1970, vol. 1, pp. 1759–67.
E. A. Owen and A. H. Sully:Philos. Mag., 1939, vol. 27, pp. 614–36.
E. A. Owen and Y. H. Liu:J. Iron Steel Inst., 1949, vol. 163, pp. 132–37.
J. I. Goldstein and A. S. Doan, Jr.:Geochim. Cosmochim. Acta, 1972, vol. 36, pp. 51–69.
L. Kaufman and M. Cohen:Trans. AIME, 1956, vol. 206, pp. 1393–1401.
J. I. Goldstein, D. B. Williams, and A. D. Romig, Jr.:Workshop in Analytical Electron Microscopy, pp. 166–69, Cornell University, 1978.
A. D. Romig, Jr. and J. I. Goldstein: NBS SP-496, pp. 462–82, 1978.
J. I. Goldstein and H. Yakowitz:Practical Scanning Electron Microscopy—Electron and Ion Microprobe Analyses, 582 pages, Plenum Press, New York, 1975.
J. W. Colby:Advances in X-ray Analysis, 11, J. B. Newkirk, G. R. Mallett, and H. G. Pfeiffer, eds., pp. 278–305, Plenum Press, New York, 1968.
G. Cliff and G. W. Lorimer:Proc. 5th European Congress on Electron Microscope, pp. 140–41, Institute of Physics, London, 1972.
J. I. Goldstein, J. L. Costley, G. W. Lorimer, and S. J. B. Reed:SEM/1977, O. Johari, ed., pp. 315–24, IIT Research Institute, Chicago, IL, 1977.
J. I. Goldstein and R. E. Ogilvie:Optique des Rayons X et Microanalysis, R. Castaing, P. Deschampes, J. Philibert, eds., pp. 594–602, Herman, Inc., Paris, 1966.
R. S. Clarke, Jr. and J. I. Goldstein:Smithsonian Contribution to the Earth Sciences, vol. 21, Smithsonian Institution, Washington, D. C, 1978.
L. Kaufman and H. Nesor:Z.für Metal., 1973, vol. 64, pp. 249–58.
L. Billard and A. Chambered:Solid State Commun., 1975, vol. 17, pp. 113–18.
A. D. Romig, Jr.: Ph.D. Dissertation, Lehigh University, Bethle- hem, PA, 1979.
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Formerly Research Assistant in Department of Metallurgy & Materials Engineering, Lehigh University, Bethlehem, PA.
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Romig, A.D., Goldstein, J.I. Determination of the Fe-Ni and Fe-Ni-P phase diagrams at low temperatures (700 to 300 °C). Metall Trans A 11, 1151–1159 (1980). https://doi.org/10.1007/BF02668139
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DOI: https://doi.org/10.1007/BF02668139