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Solid solution strengthening in Nb-Ta and Nb-Mo alloy single crystals

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Abstract

The strength of Nb, Nb-Ta, and Nb-Mo alloys was investigated in tension and compression as a function of composition, temperature, and strain rate. The room-temperature properties show molybdenum to have a significant effect on the strength of niobium while the effects of tantalum are nearly zero. The room-temperature strength is shown to be well correlated with the atomic misfit parameter. Analysis of the low-temperature behavior of Nb-Ta alloys indicates that they behave similarly to the pure metal while Nb-Mo alloys show a marked deviation from this behavior. The strengthening phenomena occurring in the Nb-Mo alloys at low temperature is interpreted as being an impurity interaction. A transition between the mechanism operating in the pure metal and the impurity interaction occurs at low solute contents.

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Authors and Affiliations

  1. The Dow Chemical Co., Midland, Mich

    B. C. Peters (Research Metallurgist)

  2. Department of Metallurgy, Michigan Technological University, USA

    A. A. Hendrickson (Professor)

Authors
  1. B. C. Peters
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  2. A. A. Hendrickson
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Formerly Graduate Student, Michigan Technological University, Houghton, Mich.

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Peters, B.C., Hendrickson, A.A. Solid solution strengthening in Nb-Ta and Nb-Mo alloy single crystals. Metall Trans 1, 2271–2280 (1970). https://doi.org/10.1007/BF02643445

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  • DOI: https://doi.org/10.1007/BF02643445

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