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Conference Article: Studies on Mechanical Behavior of Mod 9CR-1MO Steel

Marie Therese Cabrillat, CEA/DEN/Cadarache, Saint Paul lez Durance, Cedex, FRANCE; Magali Reytier, Maxime Sauzay, Michel Mottot, Jean Louis Seran, Philippe Billot, CEA/DEN/Saclay, Gif sur Yvette, FRANCE; Bernard Riou, Framatome-ANP, Lyon Cedex, FRANCE; Vincent Gaffard, Ecole des Mines de Paris, Evry Cedex, FRANCE

Abstract

9Cr-1Mo mod steel is one candidate material for the VHTR pressure vessel. Research programs have been undertaken at CEA to characterize the behavior of this steel and of its welded junctions in representative loading situations - fatigue, creep and creep-fatigue solicitations - with several objectives: definition and validation of design rules, characterization and validation of defect nocivity assessment methods, development of physically based behavior and damage models which can be used with confidence outside their identification domain, acquisition of missing data.

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key words: mod 9Cr-1Mo steel; VHTR pressure vessel; design rules; creep; creep-fatigue; defect nocivity assessment.
Reference:
Proceedings of the Conference on High Temperature Reactors, Beijing, China, September, 22-24, 2004
International Atomic Energy Agency, Vienna (Austria)
HTR-2004, pp:1-13