A low cycle fatigue model for low carbon manganese steel including the effect of dynamic strain aging

Z. Y. Huang, D. Wagner, Q. Y. Wang, Muhammad Kashif Khan

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    Abstract

    Carbon–manganese steel A48 (French standards) is used in steam generator pipes of the nuclear power plant where it is subjected to the cyclic thermal load. The Dynamic Strain Aging (DSA) influences the mechanical behavior of the steel in low cycle fatigue (LCF) at favorable temperature and strain rate. The peak stress of A48 steel experiences hardening–softening–hardening (HSH) evolution at 200 °C and 0.4% s−1 strain rate in fatigue loading. In this study, isotropic and kinematic hardening rules with DSA effect have been modified. The HSH evolution of cyclic stress associated with cumulative plastic deformation has also been estimated.
    Original languageEnglish
    Pages (from-to)77-84
    JournalMaterials Science and Engineering: A
    Volume654
    Early online date14 Dec 2015
    DOIs
    Publication statusPublished - 27 Jan 2016

    Keywords

    • Carbon manganese steel
    • Cyclic hardening
    • Dynamic strain aging
    • Low cycle fatigue

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