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Fatigue Behavior of Ferritic-pearlitic-bainitic Steel - Effect of Positive Mean Stress

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The fatigue properties of ferritic-pearlitic-bainitic steel using specimens produced from massive forging were measured in stress controlled regime with positive mean stress. The cyclic creep curves and cyclic hardening/softening curves were evaluated. The fatigue life was plotted in dependence on the mean stress and on the plastic strain amplitude. The principal contribution to the drop of the fatigue life with the mean stress is due to the increase of the plastic strain amplitude in cycling with mean stress.

fatiguemean stressplastic strainfatigue lifecyclic creep

J. Polak、M. Petrenec

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Institute of Physics of Materials, Academy of Sciences of the Czech Republic 616 62 Brno, Czech Republic

2010

Key engineering materials

Key engineering materials

ISSN:1013-9826
年,卷(期):2010.417/418