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Electrical Resistivity Measured by Millisecond Pulse Heating in Comparison with Thermal Conductivity of the Superalloy Inconel 625 at Elevated Temperature

  • E. KaschnitzEmail author
  • L. Kaschnitz
  • S. Heugenhauser
20th Symposium on Thermophysical Properties
  • 12 Downloads
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  1. The 20th Symposium on Thermophysical Properties

Abstract

Selected thermophysical properties of Inconel 625 were measured in continuation of our work on the comparison between thermal conductivity and electrical resistivity for different alloys. In contrast to pure metals, alloys usually show significant deviations from the Wiedemann–Franz law using the theoretical Sommerfeld value. Two experimentally determined constants can take into account mainly lattice and electron scattering contributions (Smith–Palmer plot), re-establishing a well-defined relation between thermal and electrical conductivity. Thermal diffusivity of Inconel 625 was measured by the laser flash method in the temperature range − 120 °C to 1250 °C; heat capacity was measured by differential scanning calorimetry in the temperature range − 170 °C to 1250 °C; thermal expansion was measured by dilatometry in the temperature range − 150 °C to 1295 °C (solidus temperature). Density at room temperature was measured by an Archimedean balance. From these experimentally obtained data, thermal conductivity was calculated in a wide temperature range. Electrical resistivity of Inconel 625 was measured by millisecond pulse heating in the temperature range from room temperature to the solidus temperature. The measurement results of electrical resistivity as a function of specific enthalpy were combined with results of specific heat capacity measurements to obtain the relation between resistivity and temperature.

Keywords

Electrical resistivity Inconel 625 Millisecond pulse heating Smith–Palmer plot Specific heat capacity Thermal conductivity 

Notes

Acknowledgments

This work was supported by the “ACR Strategische Projekte” funding program coordinated by the Austrian Cooperative Research (ACR) and funded by the Austrian Ministry for Digital and Economic affairs (BMDW).

References

  1. 1.
    L.E. Shoemaker, in Superalloys 718, 625, 706 and Derivatives, ed. by E.A. Loria (TMS, Warrendale, 2005), p. 409CrossRefGoogle Scholar
  2. 2.
    V. Shankar, K. Bhanu Sankara Rao, S.L.J. Mannan, Nucl. Mater. 288, 222 (2001)ADSCrossRefGoogle Scholar
  3. 3.
    M.J. Cieslak, T.J. Headley, T. Kollie, A.D. Romig, Metall. Trans. A 19A, 2319 (1988)ADSCrossRefGoogle Scholar
  4. 4.
    J.N. DuPont, Metall. Mater. Trans. A 27A, 3612 (1996)ADSCrossRefGoogle Scholar
  5. 5.
    K.D. Maglić, NLj Perović, A.M. Stanimirović, Int. J. Thermophys. 15, 741 (1994)ADSCrossRefGoogle Scholar
  6. 6.
  7. 7.
  8. 8.
    E. Kaschnitz, P. Hofer, W. Funk, Int. J. Thermophys. 34, 843 (2013)ADSCrossRefGoogle Scholar
  9. 9.
    M.J. Richardson, in Compendium of Thermophysical Property Measurement Methods: Recommended Measurement Techniques and Practices, vol. 2, ed. by K.D. Maglić, A. Cezairliyan, V.E. Peletsky (Plenum Press, New York, 1992), p. 519CrossRefGoogle Scholar
  10. 10.
    J.P. Cali, NBS Certificate, Standard Reference Material 781, Molybdenum—Heat Capacity (National Bureau of Standards, Washington, DC, 1977)Google Scholar
  11. 11.
    R.K. Kirby, in Compendium of Thermophysical Property Measurement Methods: Recommended Measurement Techniques and Practices, vol. 2, ed. by K.D. Maglić, A. Cezairliyan, V.E. Peletsky (Plenum Press, New York, 1992), p. 549CrossRefGoogle Scholar
  12. 12.
    S. Heugenhauser, E. Kaschnitz, Density and thermal expansion of the nickel-based superalloy Inconel 625 in the solid and liquid states, High Temp. High Press. [in press] Google Scholar
  13. 13.
    G. Bräuer, L. Dusza, B. Schulz, Interceramics 41, 489 (1992)Google Scholar
  14. 14.
    P. Reiter, E. Kaschnitz, High Temp. High Press. 33, 505 (2001)CrossRefGoogle Scholar
  15. 15.
    E. Kaschnitz, P. Reiter, J. Therm. Anal. Calorim. 64, 351 (2001)CrossRefGoogle Scholar
  16. 16.
    E. Kaschnitz, W. Funk, T. Pabel, High Temp. High Press. 43, 175 (2014)Google Scholar
  17. 17.
    E. Kaschnitz, H. Kaschnitz, T. Schleutker, A. Gülhan, B. Bonvoisin, High Temp. High Press. 46, 353 (2017)Google Scholar
  18. 18.
    P.G. Klemens, R.K. Williams, Int. Met. Rev. 31, 197 (1986)CrossRefGoogle Scholar
  19. 19.
    C.S. Smith, E.W. Palmer, Trans. Am. Inst. Min. 117, 225 (1935)Google Scholar
  20. 20.
    A.S. Dobrosavljević, K.D. Maglić, High Temp. High Press. 21, 411 (1989)Google Scholar

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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Österreichisches Gießerei-InstitutLeobenAustria

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