Abstract
ABSTRACT The ductility of a material represents a very important value for both the classification and application of high-temperature alloys in real components. Commonly, different values have been defined and can be used to characterise the ductility of the material. Within this work, a 3D-scanning system has been developed which allow a highly precise digital reconstruction of fractured creep specimens. The digital reconstruction is used to compare and refine conventions for determining one of the ductility candidate values, the uniform elongation, in a consistent, robust and objective way. By utilizing this system, a large amount of long-term creep specimens were re-evaluated including P92 samples with challenging, since macroscopically low ductility values. The results will be discussed in by providing uniform elongation trends and by the use of the Ductility Evaluation of Creep Specimens (DECS) diagram.
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