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Grain boundary damping in substitutional alloys

  • Mechanical Behavior
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Abstract

A study was made of the grain boundary damping characteristics of twelve Cu−Ni alloys, chosen to cover the entire range of solid solutions. The height, temperature, and activation energy of the solute peak was used to investigate solute segregation to grain boundaries. A criterion was developed to determine solute build up in the grain boundaries, and when applied to other alloy systems, it verified the well known equilibrium segregation concept due to Mclean.12 The qualitative model for the low temperature peak in fcc pure metals10 was modified to incorporate segregation effects and thus explain the origin of the solute peak in dilute alloys. The model explained, without modification, the behavior of a concentrated alloy, as long as it was a complete solid solution.

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Authors and Affiliations

  1. Materials Science Division, Argonne National Laboratory, Argonne, Ill.

    J. T. A. Roberts

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  1. J. T. A. Roberts
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J. T. A. ROBERTS, formerly with Manchester University, Manchester, England

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Roberts, J.T.A. Grain boundary damping in substitutional alloys. Metall Trans 1, 2487–2493 (1970). https://doi.org/10.1007/BF03038374

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