A New Methodology for Long Term Creep Data Generation for Power Plant Components
Using stress rupture results openly available for Grade 91 steel, three features of a new methodology for creep data analysis are summarized. Firstly, in contrast to traditional power law and parametric methods, 100,000 h creep strengths of power plant steels are predicted accurately by extended extrapolation of creep lives from tests lasting a maximum of 5000 h. Secondly, related approaches rationalize creep ductility measurements in a manner which provides information relevant to creep damage evolution in operational plant. Finally, reference is made to a set of new relationships developed to offer a physically-meaningful foundation not only for rationalization and extrapolation but also for interpretation of the creep and creep fracture properties of metals and alloys.
WILSHIRE Brian;
SCHARNING P.J.;
HURST Roger;
2008-02-01
Maney Publishing
JRC43012
1748-9237,
http://www.ingentaconnect.com/content/maney/ema/2007/00000002/00000002/art00006?token=0054152b83ef14e2663433b393f6a333f25663541333c4a2f24416a762c6b67287a70463e1e4d2f85bde,
https://publications.jrc.ec.europa.eu/repository/handle/JRC43012,
10.1179/174892407X266653,
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