Abstract
In this paper it is shown that some phenomena of temperature-dependent plastic flow, annealing, and microstructure in pure metals, previously thought to be diverse, can be understood as parts of a single theoretical framework. The important microstructural effects, frequently observed experimentally, but here discussed as the basis of a new theoretical equation of plastic strain, are the nonregularity of the obstacle dislocation structure and thermally-activated rearrangement to a lesser regularity (essentially, cell formation). In turn, these effects are shown to cause gradual yielding in annealed metals (“metarecovery”), isostructural changes in flow stress with change of temperature or strain rate, and transient creep.
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Alden, T.H. The mechanism of “metarecovery” and its role in temperature dependent plastic flow. Metall Trans 4, 1047–1057 (1973). https://doi.org/10.1007/BF02645608
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DOI: https://doi.org/10.1007/BF02645608