Title: A New Methodology for Long Term Creep Data Generation for Power Plant Components
Authors: WILSHIRE BrianSCHARNING P.j.HURST ROGER
Citation: Energy materials vol. 2 no. 2 p. 84-88
Publisher: Maney Publishing
Publication Year: 2007
JRC N°: JRC43012
ISSN: 1748-9237
URI: http://www.ingentaconnect.com/content/maney/ema/2007/00000002/00000002/art00006?token=0054152b83ef14e2663433b393f6a333f25663541333c4a2f24416a762c6b67287a70463e1e4d2f85bde
http://publications.jrc.ec.europa.eu/repository/handle/JRC43012
DOI: 10.1179/174892407X266653
Type: Contributions to Conferences
Abstract: 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.
JRC Institute:Institute for Energy and Transport

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