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Strain hardening and recovery in lead during primary creep

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Abstract

The hypothesis that strain hardening occurs during primary creep is confirmed for lead by measurement of an increase of 77 K yield stress with increase of creep time. However, in the framework of the author’s theory, softening also occurs by rearrangement of the dislocation structure into cells, so that the net contribution of hardening to the declining creep rate may be minor. The recovery rate has also been measured and is found to decrease strongly as creep time increases. The decrease is sufficient to account qualitatively for most of the decrease in creep rate according to the theory. The decreased recovery rate is not consistent, however, with the prediction of the internal stress theory.

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Authors and Affiliations

  1. Department of Metallurgy, University of British Columbia, VGT 1W5, Vancouver, B.C., Canada

    Thomas H. Alden (Professor of Metallurgy)

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  1. Thomas H. Alden
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Alden, T.H. Strain hardening and recovery in lead during primary creep. Metall Trans A 8, 1857–1862 (1977). https://doi.org/10.1007/BF02646557

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  • DOI: https://doi.org/10.1007/BF02646557

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