Abstract
In a commercial Al-2·5% Mg alloy stress relaxation runs are well described by Hart's low temperature flow law and show essentially friction controlled flow behaviour, ranging from nearly anelastic to plastic flow, depending on the time, temperature and strain. Anelasticity during repeated relaxations indicates substantial strain aging during the initial relaxation run. Initial stages of relaxations show yield point like transients in the temperature/strain regime, where yield points are observed also in the tensile test.
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References
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The authors are grateful te Drs. C.-Y. Li, D. Stone and M. Hamersky for helpful discussions. Thanks are extended to Nokia Corp. Pikkala Works, for providing the Al-alloy used in this study.
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Korhonen, M.A., Navrátil, V. & Lindroos, V.K. Repeated stress relaxations in Al-2·5% Mg alloy. Czech J Phys 38, 425–430 (1988). https://doi.org/10.1007/BF01605419
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DOI: https://doi.org/10.1007/BF01605419