STP1439

    Load History in Fatigue: Effect of Strain Amplitude and Loading Path

    Published: Jan 2005


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    Abstract

    The low-cycle fatigue behavior of a duplex stainless steel, 60% α — 40% γ, is studied under tension-compression/torsion loading at room temperature and under strain control. It is shown that the duplex stainless steel has an isotropic behavior under cyclic proportional loading. The loading path induces an extra-hardening on cyclic hardening of duplex stainless steel but lower than that on austenitic stainless steels. The effect of loading history is studied in terms of strain amplitude, mean strain, and loading path. It is shown that only histories in strain amplitude and loading path have an effect on the stabilized stress.

    Keywords:

    duplex stainless steel, cyclic plasticity, biaxial loading, extra-hardening, experimental study, low-cycle fatigue


    Author Information:

    Aubin, V
    Assistant Professors, and Professor, Ecole Centrale de Lille, Laboratoire de Mécanique de Lille UMR CNRS 8107, Villeneuve d'Ascq,

    Quaegebeur, P
    Assistant Professors, and Professor, Ecole Centrale de Lille, Laboratoire de Mécanique de Lille UMR CNRS 8107, Villeneuve d'Ascq,

    Degallaix, S
    Assistant Professors, and Professor, Ecole Centrale de Lille, Laboratoire de Mécanique de Lille UMR CNRS 8107, Villeneuve d'Ascq,


    Paper ID: STP11326S

    Committee/Subcommittee: E08.05

    DOI: 10.1520/STP11326S


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