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Guy MURRY: Engineer from the École Nationale Supérieure d'Électrochimie et d'Électrométallurgie de Grenoble, Doctor of Engineering - Former Director, Office Technique pour l'Utilisation de l'Acier (OTUA) - Consulting engineer
INTRODUCTION
Creep is a plastic deformation process (occurring at above-ambient temperatures) whose main characteristic is that it can develop over time, eventually to failure, while both temperature and applied stress (below the tensile strength at the temperature in question) remain constant. This makes it one of the so-called "time-dependent" failure modes (along with fatigue and corrosion).
A steel must resist creep whenever it is subjected to mechanical stress at a temperature significantly higher than the ambient temperature.
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Creep-resistant steels
Steel creep
Bibliography
References
Standardization
- Produits en acier. Essai de fluage. - NF A 03-355 - (12.85)
- Aciers et alliages de nickel pour éléments de fixation utilisés à température élevée et/ou basse température. - NF A 35-558 - (11.99)
- Aciers et alliages à base de nickel et cobalt résistant au fluage. - NF A 35-578 - (01.03)
- Produits plats en aciers pour appareils à pression - Partie 2 : aciers non alliés et alliés avec caractéristiques...
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