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A study of the deformation properties of 10GN2MFA and 15Kh2MFA steels taking into account material damageability under plane stress conditions

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Strength of Materials Aims and scope

The paper presents the results of an experimental study of the deformation properties of 10GN2MFA and 15Kh2MFA steels at different ratios of principal stresses under cyclic loading conditions. Applying the proposed phenomenological approach of an improved elastic-viscoplastic model allows one to qualitatively describe the effects of the influence of structure degradation under the action of temperature and force factors that accompany the operation of actual structural elements significantly affecting the regularities of deformation and damageability and the strength of structural materials under combined stress conditions. An evaluation of the variation rate in the homogeneity of the studied steels at different ratios of principal cyclic stresses under cyclic creep conditions is presented. Based on the experimental results, correlation dependences between the relative values of the homogeneity coefficient and the function of the deformation properties of the material and the type of stress state were obtained, which significantly simplifies the determination of the parameters characterizing the limiting state of the structural element.

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Authors and Affiliations

  1. Pisarenko Institute of Problems of Strength, National Academy of Sciences of Ukraine, Kyiv, Ukraine

    P. O. Bulakh & O. M. Maslo

Authors
  1. P. O. Bulakh
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  2. O. M. Maslo
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Correspondence to P. O. Bulakh.

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Translated from Problemy Mitsnosti, No. 6, p. 92 – 98, November – December, 2023.

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Bulakh, P.O., Maslo, O.M. A study of the deformation properties of 10GN2MFA and 15Kh2MFA steels taking into account material damageability under plane stress conditions. Strength Mater (2024). https://doi.org/10.1007/s11223-024-00607-x

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