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|Title:||A New Approach to Creep Data Assessment|
|Authors:||WILSHIRE Brian; SCHARNING Penny; HURST Roger|
|Citation:||MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING vol. 510-511 p. 3-6|
|Publisher:||ELSEVIER SCIENCE SA|
|Type:||Articles in periodicals and books|
|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 Directorate:||Energy, Transport and Climate|
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