Abstract
Practical experience of creep failure of components in service is discussed in relation to the creep rupture properties of HK40 (25Cr–20Ni–0.4C) and HP40 (25Cr–35Ni), which are considered using traditional and new data analysis procedures. The new approach is shown to offer not only a sensible mechanistic interpretation of the observed behaviour patterns but also a reasonable method for predicting long-term fracture strengths by extrapolation of short term creep life values.
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