Skip to main content
SpringerLink
Log in

Investigation of the plasticity and strength properties of superhard materials by microindentation methods

  • Test Methods and Properties of Powder Metallurgical Materials
  • Published:
Soviet Powder Metallurgy and Metal Ceramics Aims and scope

Conclusions

An analysis is made of the effect of elastic strains on measured values of hardness of higjh-strength materials. Using the results obtained, the appreciable differences among, and characteristic features of, experimental data on the hardness of diamond are explained, and optimum conditions of measurements of, e.g., the comparatively small dispersion-hardening phenomena exhibited by superhard materials are determined. It is shown that the type of the hardness vs load relationship for a brittle high-strength material and the temperature dependence of its hardness are largely determined by its structural state and the character of the rupture processes taking place in it under load. In particular, a fall in hardness at small loads may be indicative of the existence of microcracking processes initiated by internal stress fields. At large loads hardness values are determined to an appreciable extent by a macrocracking zone and directly depend on the fracture toughness kc of the material.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

Literature cited

  1. V. F. Berdikov, A. V. Babanin, and Yu. N. Artem'eva, “Determination of the Young's moduli of various abrasive materials by the microindentation method,” Zavod. Lab., No. 8, 1014–1019 (1975).

    Google Scholar 

  2. T. R. Wilshaw, “The Hertzian fracture test,” J. Phys. D, Appl. Phys.4, No. 2, 1561–1581 (1971).

    Google Scholar 

  3. A. G. Evans and T. R. Wilshaw, “Quasistatic solid particle damage in brittle solids. I. Observation, analysis and implications,” Acta Metall.,24, No. 3, 939–956 (1976).

    Google Scholar 

  4. A. G. Evans and E. A. Charles, “Fracture toughness determinations by indentations,” J. Am. Ceram. Soc.,59, No. 7/8, 371–372 (1977).

    Google Scholar 

  5. I. Ya. Shtaerman, Contact Problem of the Theory of Elasticity [in Russian], Gostekhteorizdat, Moscow-Leningrad (1949).

    Google Scholar 

  6. L. A. Galin, Contact Problems of the Theory of Elasticity [in Russian], Gostekhteorizdat, Moscow (1953).

    Google Scholar 

  7. D. M. March, “Plastic flow in glass,” Proc. R. Soc.,A279, No. 4, 420–434 (1964).

    Google Scholar 

  8. E. O. Bernhardt, “Über die Mikrohärte der Feststoffe im Grenzbereich des kick'schen Ähnlichkeitssatzes,” Z. Metallk.,33, No. 1, 134–139 (1941).

    Google Scholar 

  9. V. N. Bakul', M. G. Loshak, and V. I. Mal'nev, “Measurement of the hardness of diamond by indentation at normal temperature,” Sintetich. Almazy, No. 6, 5–11 (1973).

    Google Scholar 

  10. V. A. Milyuvene, “Microhardness of diamond,” in: Geology, Petrography, and Mineralogy of the Magmatic Formations in the North-Eastern Part of the Siberian Platform [in Russian], Moscow (1970), pp. 323–325.

  11. M. M. Khrushchov and E. S. Berkovich, “Measurements of the hardness of diamond,” Zavod. Lab.,16, No. 2, 193–194 (1950).

    Google Scholar 

  12. P. Grodzinski and W. Stern, “Test with a triangular diamond pyramid,” Ind. Diamond Rev., No. 7, 129–132 (1951).

    Google Scholar 

  13. A. S. Semenova-Tyan-Shanskaya, “Microhardness anisotropy of diamond,” Mashinovedenie, No. 1, 120–123 (1969).

    Google Scholar 

  14. M. E. Kaminskii and A. S. Semenova-Tyan-Shanskaya, “Investigations of the microhardness of natural diamonds of various types of luminescence,” Almazy, No. 6, 7–8 (1969).

    Google Scholar 

  15. C. A. Brookes, “The indentation hardness of diamond and other crystals,” Ind. Diamond Rev., No. 9, 338–340 (1973).

    Google Scholar 

  16. F. Knoop, C. G. Peters, and W. B. Emerson, “A sensitive pyramidal diamond tool for indentation measurements,” J. Res. Natl. Bur. Std.,23, No. 7, 39–64 (1939).

    Google Scholar 

  17. A. S. Semenova-Tyan-Shanskaya and L. B. Kraposhina, “Micromechanical characteristics of diamond,” Dokl. Akad. Nauk SSSR,237, No. 6, 1352–1353 (1977).

    Google Scholar 

  18. V. P. Alekhin, G. S. Berkin, A. V. Isaev, et al., “Instrument for the micromechanical testing of hard materials,” Prib. Tekh. Eksp., No. 4, 25–28 (1971).

    Google Scholar 

  19. V. I. Mal'nev and V. G. Malogolovets, “Effect of boron and nitrogen impurities on the microhardness of synthetic diamond crystals,” in: New Developments in the Theory and Practice of Production and Application of Synthetic Superhard Materials in the National Economy, Abstracts of Papers [in Russian], Vol. 1, Kiev (1977), pp. 137–140.

    Google Scholar 

  20. Yu. L. Orlov, Mineralogy of Diamond [in Russian], Nauka, Moscow (1973).

    Google Scholar 

  21. Yu. V. Mil'man and V. I. Trefilov, “Physical nature of the temperature dependence of yield stress,” in: Mechanism of Brittle Fracture [in Russian], Kiev (1966), pp. 59–76.

  22. O. N. Grigor'ev, Yu. V. Mil'man, and V. I. Trefilov, “Some features of the mechanism of plastic deformation and parameters of thermally activated dislocation motion in diamond and boron nitride,” in: Elementary Processes of Plastic Deformation of Crystals [in Russian], Kiev (1978), pp. 144–159.

  23. I. V. Gridneva, Yu. V. Mil'man, and V. I. Trefilov, “Phase transition in diamond-structure crystals during hardness measurement,” Phys. Status Solidi,14, No. 1, 177–182 (1972).

    Google Scholar 

  24. M. Kh. Shorshorov, S. I. Bulychev, and V. P. Alekhin, Recommended Methods for the Investigation of the Physicomechanical Properties of Materials by Continuous Indentation [in Russian], Moscow (1980).

  25. A. V. Bochko, O. N. Grigor'ev, S. S. Dzhamarov, et al., “Temperature dependence of the hardness of boron nitride,” Poroshk. Metall., No. 6, 64–69 (1977).

    Google Scholar 

  26. A. V. Bochko, O. N. Grigor'ev, S. S. Dzhamarov, et al., “Effect of structural factors on the mechanical properties of superhard materials based on boron nitride,” Poroshk. Metall., No. 10, 61–69 (1979).

    Google Scholar 

  27. A. V. Bochko, O. N. Grigor'ev, S. S. Dzhamarov, et al., “Effect of structural factors on the ductility and strength properties of superhard materials based on boron nitride,” Poroshk. Metall., No. 5, 96–103 (1980).

    Google Scholar 

  28. O. N. Grigor'ev, S. S. Dzhamarov, V. I. Trefilov, and A. M. Shatokhin, “Effect of heat treatment on the structural state and mechanical properties of polycrystals based on the superhard boron nitride modification,” Poroshk. Metall., No. 1, 53–61 (1981).

    Google Scholar 

  29. B. R. Lawn and D. B. Marshall, “Hardness, toughness, and brittleness,” J. Am. Ceram. Soc.,62, No. 7/8, 347–350 (1979).

    Google Scholar 

  30. G. G. Gnesin, O. N. Grigor'ev, I. I. Osipova, et al., “Investigation of the mechanical properties of tool materials based on silicon nitride,” in: Transactions of the Fifth Conference on Powder Metallurgy, Vol. 2, Poznan (1979), pp. 32–34.

    Google Scholar 

  31. V. N. Bakul', M. G. Loshak, and V. I., Mal'nev, “Microhardness of diamond and its temperature dependence,” Sintetich. Almazy, No. 1, 7–10 (1978).

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Institute of Materials Science, Academy of Sciences of the Ukrainian SSR, Ukraine

    O. N. Grigor'ev

Authors
  1. O. N. Grigor'ev
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

Translated from Poroshkovaya Metallurgiya, No. 1(229), pp. 74–84, January, 1982.

The author wishes to thank S. S. Dzhamarov for the provision of BN polycrystal specimens and A. M. Shatokhin for assistance in their experimental investigation.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Grigor'ev, O.N. Investigation of the plasticity and strength properties of superhard materials by microindentation methods. Powder Metall Met Ceram 21, 65–73 (1982). https://doi.org/10.1007/BF00791730

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00791730

Keywords

Search

Navigation