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Thermodynamics of the Fe-Mo-C system at 985 K

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Abstract

The solubility of carbon and the composition of carbides in the ferritic Fe-Mo-C system were measured at 985 K by a gas flowing method and a sealing method. The composition of alloys ranged from 0.24 pct to 2.93 pct Mo. An iron-carbon binary alloy was included in the equilibration as a reference material. The molybdenum-carbon interaction in the α-phase was analyzed by the central atoms model. The Wagner interaction coefficient was determined as ε Moc = •100 ± 2, which is a higher negative value than that in the Fe-Cr-C system at the same temperature. The carbide phase was analyzed as a regular solution of two component carbides, FeC x and MoC x . M6C carbide was in equilibrium with α in the carbon activity range from 0.045 to 0.156, and M2C carbide was in equilibrium at the carbon activity 0.51. M6C and M2C carbides were present at the carbon activity 0.45. Molybdenum partitioning between α- and carbide phases was measured. The standard free energies of formation of two component carbides and the interaction energy parameters were determined for M6C and M2C carbides.

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References

  1. A. Lobo and G. H. Geiger:Metall. Trans. A, 1976, vol. 7A, p. 1347.

    CAS  Google Scholar 

  2. T. Takei:Kinzoku no Kenkyu, 1932, vol. 9, p. 97.

    Google Scholar 

  3. K. Kuo:JISI, 1953, vol. 173, p. 370; 1956, vol. 176, p. 258.

    CAS  Google Scholar 

  4. T. Sato, T. Nishizawa, and K. Tamaki:Trans. Japan Inst. Metals, 1962, vol. 3, p. 196.

    CAS  Google Scholar 

  5. C. Chatfield and M. Hillert:CALPHAD, 1977, vol. 1, p. 201.

    Article  CAS  Google Scholar 

  6. H. Wada:Metall. Trans. A, 1985, vol. 16A, p. 1479.

    CAS  Google Scholar 

  7. E.H. Foo and C.H.P. Lupis:Acta Metall., 1973, vol. 21, p. 1409.

    Article  CAS  Google Scholar 

  8. C.H.P. Lupis:Chemical Thermodynamics of Materials, North-Holland, 1983.

  9. M. Enomoto:Tetsu-to-Hagané, 1983, vol. 69, p. 1336.

    CAS  Google Scholar 

  10. T. Wada, H. Wada, J. F. Elliott, and J. Chipman:Metall. Trans., 1972, vol. 3, p. 2865.

    CAS  Google Scholar 

  11. J.C. Greenbank:JISI, 1971, vol. 209, p. 986.

    CAS  Google Scholar 

  12. K. Bungart, E. Schürmann, H. Preisendanz, P. Schuler, and H.J. Osing:DEW-Tech.; Ber., 1969, vol. 9, p. 439.

    Google Scholar 

  13. R. J. Brigham and J. S. Kirkaldy:Trans. TMS-AIME, 1963, vol. 227, p. 538.

    CAS  Google Scholar 

  14. M. Enomoto and H. I. Aaronson:CALPHAD, 1985, vol. 9, p. 43.

    Article  CAS  Google Scholar 

  15. V. I. Alekseev and L. A. Shvartsman:Izv. Akad. Nauk SSSR, Otd. Tekhn. Nauk, Met. i Toplivo, 1962, vol. 6, p. 171.

    Google Scholar 

  16. M. Gleiser and J. Chipman:J. Phys. Chem., 1962, vol. 66, p. 1539.

    Article  CAS  Google Scholar 

  17. E. Rudy:CALPHAD, 1977, vol. 1, p. 78.

    Google Scholar 

  18. L. Brewer, R. H. Lamoreaux, R. Ferro, R. Marazza, and K. Girgis:Atomic Energy Review, Molybdenum: Physico-Chemical Properties of its Compounds and Alloys, International Atomic Energy Agency, Vienna, 1980, p. 95.

    Google Scholar 

  19. E. K. Storms:The Refractory Carbides, Academic Press, 1967.

  20. T. Wada and E.K. Ohriner:CALPHAD, 1984, vol. 8, p. 69.

    Article  Google Scholar 

  21. B. Uhrenius and H. Harvig:Metal Science, 1975, vol. 9, p. 67.

    Article  CAS  Google Scholar 

  22. A. H. K. Abri: M.S. Thesis, The Pennsylvania State University, 1980.

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Authors and Affiliations

  1. Department of Materials and Metallurgical Engineering, University of Michigan, 48109, Ann Arbor, MI

    Harue Wada (Associate Research Scientist)

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  1. Harue Wada
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Wada, H. Thermodynamics of the Fe-Mo-C system at 985 K. Metall Trans A 17, 391–398 (1986). https://doi.org/10.1007/BF02643945

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  • DOI: https://doi.org/10.1007/BF02643945

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