Assessment of potential service-life performance for MarBN steel power plant header under flexible thermomechanical operations
International Journal of Fatigue(2020)
摘要
•Strain-controlled fatigue test of MarBN are conducted over a range of temperatures.•The strain dwell periods increase the softening behaviour and reduce fatigue life.•A unified viscoplastic model is implemented to capture the deformation mechanisms.•SWT approach is adopted to assess the service-life performance of MarBN component.
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关键词
MarBN steel,Thermomechanical fatigue,Unified viscoplasticity,Superheater header,Service-life assessment
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