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Characteristics of vacancies and temperature coefficients of electrical resistivity in aluminum and its alloys

  • Nonferrous Metals and Alloys
  • Published:
Metal Science and Heat Treatment Aims and scope

Conclusions

  1. 1.

    The main source and sink of vacancies in large polycrystals of aluminum and alloys of Al+0.2–3.5% Cu and Al+0.02% Fe with small changes in temperature (ΔT=±6°) is the free surface. The time for relaxation of vacancies in samples 1 mm thick is 1–10 min at high temperatures.

  2. 2.

    In alloys of Al with 0.2–3.5% Cu the scattering capacity of monovacancies is an order higher than that of vacancies bound to copper atoms. The temperature dependence of the lattice electrical resistivity of aluminum and Al alloys matches the equation ρ = A + BT + CT2.

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Literature cited

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Authors
  1. Yu. S. Nechaev
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  2. A. S. Bubenshchikov
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Additional information

Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 9, pp. 45–48, September, 1979.

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Nechaev, Y.S., Bubenshchikov, A.S. Characteristics of vacancies and temperature coefficients of electrical resistivity in aluminum and its alloys. Met Sci Heat Treat 21, 713–716 (1979). https://doi.org/10.1007/BF00708639

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  • DOI: https://doi.org/10.1007/BF00708639

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