Abstract
Constitutive liquid phase sintering is used to obtain fully dense parts of powdered STELLITE Alloy No. 6 PM (Co-29Cr-4.5W-l.2C- < 1B) with excellent wear resistance at elevated temperature. This alloy is characterized by a cobalt-rich fcc solid solution and interdendritic carbide phases in the as-atomized state. Compositional changes in the carbides prior to, and during, the liquid phase sintering were investigatedvia X-ray diffraction, optical microscopy, and Auger electron spectroscopy. The rejection of boron and cobalt by an M23C6-type carbide was identified as leading to the local formation of the liquid phase. A mechanism for the interactive role of the carbide composition change and the constitutive liquid phase sintering is proposed.
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REFERENCES
W. J. Huppmann:Sintering and Catalysis, G.C. Kuczynski, ed., Plenum Press, New York, NY, 1975, pp. 359–78.
W. J. Huppmann and G. Petzow:Sintering Processes, G.C. Kuczynski, ed., Plenum Press, New York, NY, 1979, pp. 189–201.
D.N. Yoon and W. J. Huppmann:Acta Metall., 1979, vol. 27, pp. 693–98.
W.J. Huppmann and G. Petzow:Sintering—New Developments, M. M. Ristic, ed., Elsevier Scientific, Amsterdam, Netherlands, 1979, pp. 272–78.
D.N. Yoon and W.J. Huppmann:Acta Metall., 1979, vol. 27, pp. 973–77.
L. Kozma, W. J. Huppmann, L. Bartha, and P. Mezei:Powder Met. Inter., 1981, vol. 17, pp. 7–11.
K. V. Sebastian and G. S. Tendolkar:Powder Met. Inter., 1979, vol. 11, pp. 62–64.
W.J. Huppmann, H. Riegger, W. A. Kaysser, V. Smolej, and S. Pejovnik:Z. fur Metallkunde, 1979, vol. 70, pp. 707–13.
W.J. Huppmann:Z. fur Metallkunde, 1979, vol. 70, pp. 792–97.
W. D. Forgeng: Technical File No. 1858, Cabot Corp., Kokomo, IN, June 1946.
C. Guyard, A. Barbangelo, H. Allibert, and J. Driole:J. Mater. Sci., 1981, vol. 16, pp. 604–12.
E. M. Foley, G. Dreyer, and H.E. Rogers: “Sintered High Performance Metal Powder Alloy,” U. S. Patent No. 4,123,266 issued on Oct. 31, 1979 to Cabot Corp.
P. J. McGinn, A. E. Miller, P. Kumar, and A. J. Hickl:Progress in Powder Metallurgy, J. G. Bewley and S. K. McGee, eds., Metal Powder Industries Federation, Princeton, NJ, 1982, vol. 38, pp. 449–62.
P. J. McGinn: M. S. Thesis, Univ. of Notre Dame, Notre Dame, IN, January 1983.
R. P. Elliot:Constitution of Binary Alloys, First Supplement, McGraw-Hill, New York, NY, 1965, p. 115.
H. J. Goldschmidt:Interstitial Alloys, Plenum Press, New York, NY, 1967, p. 268.
Ph. Maitrepierre, J. Rofes-Vernis, and D. Thivellier.Boron in Steel, S.K. Banerji and J.E. Morral, eds., TMS-AIME, Warrendale, PA, 1980, pp. 1–18.
T. M. Williams, D.R. Harries, and J. Furnival:J. Iron Steel Inst., 1972, vol. 210, pp. 351–58.
P. J. McGinn: Univ. of Notre Dame, Notre Dame, IN, unpublished research, 1983.
S. Hamar-Thibault, M. Durrand-Charre, and B. Andries:Metall. Trans. A, 1982, vol. 13A, pp. 545–50.
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This paper is based on a presentation delivered at the symposium “Activated and Liquid Phase Sintering of Refractory Metals and Their Compounds” held at the annual meeting of the AIME in Atlanta, Georgia on March 9, 1983, under the sponsorship of the TMS Refractory Metals Committee of AIME.
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Mcginn, P.J., Kumar, P., Miller, A.E. et al. Carbide composition change during liquid phase sintering of a wear resistant alloy. Metall Trans A 15, 1099–1102 (1984). https://doi.org/10.1007/BF02644703
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DOI: https://doi.org/10.1007/BF02644703