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Ambiguity of temperature dependences for the elastic characteristics of materials with nickel and germanium as examples

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Strength of Materials Aims and scope

Abstract

Experimental data are presented for precise measurements of longitudinal ultrasonic wave propagation rate in single-crystal germanium and polycrystalline nickel. With these materials as examples the existence of ambiguity is demonstrated in values of elastic characteristics in successive cycles of thermal exposure, i.e., temperature ranges in which the material does not undergo phase transformation.

It is suggested that the ambiguity of mechanical properties of the materials is due to possible variations in the distribution of energy between the lattice framework and the electron subsystem of atoms.

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Literature cited

  1. I. P. Golyamin (ed.), Ultrasound [in Russian], Sov. Entsikl., Moscow (1979).

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  2. V. A. Borisenko and A. I. Troyanskii, “Temperature dependences for longitudinal ultrasonic wave propagation rate in molybdenum and niobium alloys,” Probl. Prochn., No. 8, 118–121 (1990).

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  3. M. Ya. Amus'ya and V. K. Ivanov, “Interblock reaction in atoms,” Usp. Fiz. Nauk,152, No. 2, 185–230 (1987).

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Authors and Affiliations

  1. Institute of Strength Problems, Academy of Sciences of the UkrSSR, Kiev

    V. A. Borisenko & A. I. Troyanskii

Authors
  1. V. A. Borisenko
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  2. A. I. Troyanskii
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Translated from Problemy Prochnosti, No. 10, pp. 54–56, October, 1990.

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Borisenko, V.A., Troyanskii, A.I. Ambiguity of temperature dependences for the elastic characteristics of materials with nickel and germanium as examples. Strength Mater 22, 1452–1454 (1990). https://doi.org/10.1007/BF00767230

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  • DOI: https://doi.org/10.1007/BF00767230

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