Abstract
The results of a series of creep crack incubation (CCI) tests have been used to examine the effectiveness of the LICON methodology for predicting long duration uniaxial rupture properties of a 1%CrMoV steel at 550°C. It has been demonstrated that good predictions can be made using this approach but that, for this to be possible, a knowledge of additional information is also required including uniaxial creep strain data, uniaxial and multi-axial rupture time properties and the results of finite element analysis.In order to apply the creep damage enhancement approach to the low alloy creep resistant steel, it has been necessary to establish the steady-state creep stress state in the compact tension testpiece geometry used in the investigation. The new evidence is described.
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