Figure 1: Creep rate versus time curves of at 923 K and 140 MPa. Figure 2: Time to rupture of the 9Cr steels at 923 K and 140 MPa, as a function of carbon concentration. We have shown for martensitic ...

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Creeps are characterized as time-dependent permanent deformations that occur under constant stress at elevated temperatures. The material composition determines the onset of creep. For example, steel ...