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Model for plasticity effects in metals under nonproportional cyclic loading

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Abstract

A possible physical mechanism for additional hardening is proposed on the basis of an analysis of experiments on nonproportional cyclic loading of metals. A model for an elastoplastic polycrystal with a hardening law taking into account the interaction of slip systems is developed. The effect of additional hardening for elliptic strain paths and the shapes of stress paths and hysteresis loops typical of elliptic strain paths are described qualitatively. A violation of the assumption of the local determinacy and orientations of stress paths is considered for the square strain paths taking place in tests of chromium-nickel austenite stainless steels.

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Authors
  1. I. É. Keller
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  2. P. V. Trusov
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Additional information

Perm' State Technical University, Perm', 614600. Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, Vol. 40, No. 6, pp. 144–151, November–December, 1999.

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Keller, I.É., Trusov, P.V. Model for plasticity effects in metals under nonproportional cyclic loading. J Appl Mech Tech Phys 40, 1126–1132 (1999). https://doi.org/10.1007/BF02469184

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  • DOI: https://doi.org/10.1007/BF02469184

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