Title: A New Approach to Creep Data Assessment
Authors: WILSHIRE BrianSCHARNING PennyHURST Roger
Citation: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING vol. 510-511 p. 3-6
Publisher: ELSEVIER SCIENCE SA
Publication Year: 2009
JRC N°: JRC53879
ISSN: 0921-5093
URI: http://www.elsevier.com/locate/msea
http://publications.jrc.ec.europa.eu/repository/handle/JRC53879
DOI: 10.1016/j.msea.2008.04.125
Type: Articles in Journals
Abstract: New relationships, incorporating the activation energy for matrix diffusion (300 kJ mol-1) and the ultimate tensile strength values at the creep temperature, allow effective rationalization of the multi-batch stress rupture properties for Grade 92 steel (9Cr-0.5Mo-1.8W-V-Nb). These approaches lead to straightforward procedures for extrapolation of short-term results, with creep life measurements from tests lasting up to only 5000 h providing reasonable estimates of 100,000 h rupture strengths. Validation of this new methodology would therefore offer the prospect of cost-effective acquisition of long-term creep design data.
JRC Institute:Institute for Energy and Transport

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