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Influences of the Graphite Growth Direction on the Thermal Conductivity of Cast Iron

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Abstract

The thermal conductivity of ferritic spheroidal graphite iron samples containing various amounts of chunky or spheroidal graphite was investigated by means of the laser flash method. Scanning electron microscopy studies were performed to investigate the graphite morphology. Although chunky graphite is believed to grow in large interconnected eutectic cells, no beneficial effects on the thermal transport properties can be established for spheroidal graphite irons containing considerable amounts of chunky graphite. The results can be explained by the growth mode of chunky graphite with the c-axis of the hexagonal crystal as the dominating growth direction. This produces less favorable paths for the propagation of heat throughout the material as compared to lamellar and compacted graphite, owing to the low thermal conductivity of graphite along the prism planes. The crystallographic orientation of the hexagonal unit cells within lamellar, compacted, spheroidal, and chunky graphite was analyzed by means of electron backscatter diffraction (EBSD) and related to the thermal transport properties.

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Notes

  1. JEOL is a trademark of Japan Electron Optics Ltd., Tokyo.

References

  1. D. Holmgren: Int. J. Cast Met. Res., 2005, 18:331–45

    Article  CAS  Google Scholar 

  2. Y.S. Touloukian: Thermophysical Properties of Matter, vol. 2, Plenum, New York, NY, 1970

    Google Scholar 

  3. R. Källbom, K. Hamberg, and L.-E. Björkegren: VTT Symp., Espoo, Finland, June 2005

  4. B. Prinz, K.J. Reifferscheid, T. Schulze, R. Döpp, E. Schürmann: Giessereiforschung, 1991, 43:107–15

    CAS  Google Scholar 

  5. P. Zhu, R. Sha, and Y. Li: The Physical Metallurgy of Cast Iron, Proc. Materials Research Society, H. Fredriksson and M. Hillert, eds., North-Holland, 1985, vol. 34, pp. 3–11

  6. X. Den, P. Zhu, and Q. Liu: The Physical Metallurgy of Cast Iron, Proc. Materials Research Society, H. Fredriksson and M. Hillert, eds., North Holland, 1985, pp. 141–50

  7. P.C. Lui, C.R. Loper Jr., T. Kimura, H.K. Park: AFS Trans., 1980, 80–41:97–118

    Google Scholar 

  8. P.C. Liu, C.L. Li, D.H. Wu: AFS Trans., 1983, 51:119–26

    Google Scholar 

  9. M. Gagné and D. Argo: Proc. Int. Conf. on Advanced Casting Technology, Nov. 12–14, 1989, pp. 231–56

  10. H. Itofuji, A. Masutani: Int. J. Cast Met. Res., 2001, 14:1–14

    CAS  Google Scholar 

  11. H. Itofuji, H. Uchikawa: AFS Trans., 1990, 90:429–48

    Google Scholar 

  12. A. Diószegi: On Microstructure Formation and Mechanical Properties in Grey Cast Iron, Linköping Studies in Science and Technology Dissertation No. 871, 2004

  13. W.J. Parker, R.J. Jenkins, C.P. Butler, G.L. Abbot: J. Appl. Phys., 1961, 32:1679–84

    Article  CAS  Google Scholar 

  14. D. Holmgren, A. Diószegi, and I.L. Svensson: unpublished research

  15. P.A. Blackmore, K. Morton: Int. J. Fatigue, 1982, 4:149–55

    Article  Google Scholar 

  16. H. Kempers: Giesserei, 1966, 53:15–18

    CAS  Google Scholar 

Download references

Acknowledgments

The authors express their gratitude to Mrs. Lena Ryde, Corrosion and Metals Research Institute AB, KIMAB, for help with the EBSD investigations.

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Authors and Affiliations

  1. Department of Mechanical Engineering/Component Technology, Jönköping University, Jönköping, Sweden

    Daniel Holmgren & Ingvar L. Svensson (Professors)

  2. Swedish Foundry Association, Jönköping, Sweden

    Rikard Källbom (Postdoctoral Student)

Authors
  1. Daniel Holmgren
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  2. Rikard Källbom
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  3. Ingvar L. Svensson
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Corresponding author

Correspondence to Daniel Holmgren.

Appendix

Appendix

Fig. 11 Fig. 12 Table IV. Table V.

Fig. 11
figure 11

Thermal diffusivity vs temperature. Samples 1 through 3 are ferritic ductile irons. Samples 4 through 6 are ferritic ductile irons with high fractions of chunky graphite

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Fig. 12
figure 12

Specific heat vs temperature

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Table IV. Room-Temperature Density (kg/m3)
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Table V. Linear Coefficient of Thermal Expansion (10− 6/K)
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Holmgren, D., Källbom, R. & Svensson, I. Influences of the Graphite Growth Direction on the Thermal Conductivity of Cast Iron . Metall Mater Trans A 38, 268–275 (2007). https://doi.org/10.1007/s11661-006-9016-2

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