Abstract
On the basis of tests of the austenitic steel 03Kh21N32M3B with different programs of nonproportional loading including stages of various kinds of proportional cyclic loading and cyclic loading with constant strain intensity, the article analyzes the influence of the history of deformation on isotropic strengthening. It was established that in the material there exist several states of stabilization depending on the loading path, and to each of these states corresponds its own degree of isotropic strengthening. To express the experimentally observed effects, the article suggests determining equations in which isotropically kinematic strengthening is described on the basis of the evolution of a surface of “memory” in the space of plastic deformations. There is good agreement between the results of calculation and the experimental data.
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Translated from Problemy Prochnosti, No. 7, pp. 47–51, July, 1991.
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Apaichev, M.V., Ivanov, I.A. & Pon'kin, A.V. Modeling of the effects of isotropic strengthening in nonproportional cyclic loading. Strength Mater 23, 770–775 (1991). https://doi.org/10.1007/BF00771280
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DOI: https://doi.org/10.1007/BF00771280