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Studies of Carbides in a Rapidly Solidified High-Speed Steel

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Abstract

Rapid solidification by electron beam surface melting of a Mo-base high-speed steel (M7) has produced microstructural features different from those observed in the conventionally processed material. As a result of rapid solidification, the volume percent of the carbide phases formed has decreased sharply and has resulted in the formation of M2C and M23C6 carbide phases, while in the conventionally processed material, M6C and MC carbides were present. Microanalysis of the extracted carbides formed by electron beam melting has yielded an intriguing finding. M23C6 is found to be unusually rich in molybdenum, tungsten, and vanadium; the concentration of (Mo + W), for instance, is approximately 60 wt pct. The corresponding values for Fe and Cr are surprisingly low (6 wt pct Cr and 1 wt pct Fe). This is in marked contrast with carbides encountered in the conventionally processed high-speed steel, where Cr and Fe are the major constituents. The shift in composition of the carbide phases could be attributed to the accelerated evaporation of chromium during surface melting as compared to the evaporation of Mo, W, and V.

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References

  1. E.J. Galda and R.W. Kraft:Metall. Trans., 1974, vol. 5, pp. 1727–33.

    CAS  Google Scholar 

  2. H. Brandis, E. Haberling, and H.H. Weigand:Thyssen Edelst. Techn. Ber., 1981, vol. 7 (2), pp. 1–18.

    Google Scholar 

  3. W.B. Pearson:Handbook of Lattice Spacing and Structures of Metals, Pergamon Press, Oxford, United Kingdom, 1967.

    Google Scholar 

  4. E. Staska, R. Bloch, and A. Kulmburg:Microchim. Acta, Wien, 1974, suppl. 5, pp. 111–27.

  5. Y.-W. Kim, P.R. Strutt, and H. Nowotny:Metall. Trans. A, 1979, vol. 10A, pp. 881–86.

    CAS  Google Scholar 

  6. I.R. Sare and R.W. Honeycombe:J. Mater. Sci., 1978, vol. 13, pp. 1991–2002.

    Article  CAS  Google Scholar 

  7. J.J. Rayment and B. Cantor:J. Mater. Sci., 1978, vol. 12, pp. 156–63.

    CAS  Google Scholar 

  8. A. Tauqir, H. Nowotny, and P.R. Strutt:Rapidly Solidified Alloys and Their Mechanical & Magnetic Properties, MRS Proc., Boston, MA, 1985, vol. 56, pp. 425–28.

    Google Scholar 

  9. A. Tauqir, P.G. Klemens, and P.R. Strutt:J. Appl. Phys., 1987, vol. 62, pp. 3953–59.

    Article  CAS  Google Scholar 

  10. J.J. McCarthy:Metallurgical Thin Film Correction Module, NS-885-E, Tracor Northern, Inc., Middleton, WI, 1981.

    Google Scholar 

  11. J.C. Schuster: University of Vienna, Vienna, Austria, unpublished research, 1986.

  12. P.G. Klemens:J. Appl. Phys., 1976, vol. 47 (5), pp. 2165–74.

    Article  Google Scholar 

  13. D.A. Schauer, W.H. Giedt, and S.M. Shintakn:Welding J., 1978, pp. 127s–133s.

  14. B.H. Kear, J.W. Mayer, J.M. Poate, and P.R. Strutt: inMetallurgical Treatises, J. Tien and J. Elliott, eds., AIME, New York, NY, 1982, pp. 321–43.

    Google Scholar 

  15. A. Tauqir, P.R. Strutt, and P.G. Klemens:Mater. Sci. Eng., 1987, vol. 94, pp. 251–58.

    Article  CAS  Google Scholar 

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Authors and Affiliations

  1. Dr. A.Q. Khan Research Laboratories, Kahuta, Rawalpindi, Pakistan

    Anjum Tauqir (Principal Engineer)

  2. Department of Metallurgy and Institute of Materials Science, University of Connecticut, 06268, Storrs, Ct

    Hans Nowotny (Professors) & Peter R. Strutt (Professors)

Authors
  1. Anjum Tauqir
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  2. Hans Nowotny
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  3. Peter R. Strutt
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formerly Research Associate, University of Connecticut

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Tauqir, A., Nowotny, H. & Strutt, P.R. Studies of Carbides in a Rapidly Solidified High-Speed Steel. Metall Trans A 21, 3021–3026 (1990). https://doi.org/10.1007/BF02647222

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  • DOI: https://doi.org/10.1007/BF02647222

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