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Response of Cu single crystals to high loading rates

I. Effect of loading rates on the mechanical properties of Cu single crystals

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Czechoslovak Journal of Physics B Aims and scope

Abstract

The present paper deals with dynamic response of Cu single crystals to high loading rates. Cu crystals were loaded with transient stress waves along several crystallographic directions ([110], [100] and [¯135]). The response is expressed in terms of stress wave attenuation. The obtained results indicate that there are at least 2 basic regions where different mechanisms of plastic strain are working.

The paper also involves a critical analysis of the used Hopkinson split bar technique. The analysis clearly indicates that the interpretation of experimental results can not be generally done by means of the functionσ(ε). The obtained results may be described in terms of relaxation processes, analogously as in case of shock waves. This procedure also makes possible to describe the results in terms of dislocation dynamics. The possible connection between elastic precursor decay curves and the stress distribution in a specimen loaded with the Hopkinson split bar technique is briefly outlined.

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Authors and Affiliations

  1. Institute of Physical Metallurgy, Czechosl. Acad. Sci., Brno, Žižkova 22, 616 62, Brno, Czechoslovakia

    F. Dušek & J. Buchar

  2. Department of Bases of Metallurgy, Polish Acad. Sci., Cracow, Poland

    Z. Jasinski, A. Litwora & A. Piatkowski

Authors
  1. F. Dušek
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  2. Z. Jasinski
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  3. J. Buchar
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  4. A. Litwora
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  5. A. Piatkowski
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Dušek, F., Jasinski, Z., Buchar, J. et al. Response of Cu single crystals to high loading rates. Czech J Phys 26, 538–558 (1976). https://doi.org/10.1007/BF01586886

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  • DOI: https://doi.org/10.1007/BF01586886

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