3. Model prediction

3.1 Key outputs

A typical load waveform in stress-controlled creep-fatigue with initial compression under σ s∈[-150, 150] MPa andT =550 ˚C is shown in Fig. 4. The first cycle is presented for illustration purpose, and the following cycles are the same. It consists of a pre-compressive stress hold for a period t cand a tensile stress hold t t. The magnitude of stress applied during compression is designated as Δσ c, and the stress applied during tension is Δσ t. The stress variation rate during load reversal is constant, symbolised as . Table 2 summarises the default value for load waveform parameters and test temperature. They are used to elaborate the key model outputs. A total number of 50 cycles have been calculated.