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Austenitic stainless steels are used for the main vessel, internals and other main components of LMFBRs. Various grades were specified in the past: 316 for plants in the UK, 304 for SNR 300, 316L modified for SUPERPHENIX. The 316L modified with low carbon and controlled nitrogen content is also the preferred steel for EFR. In a preliminary part of this work, low cycle fatigue (LCF) data were collected for a number of austenitic weld metals, over a range of temperatures (20 to 625 C), orientation and composition. The second part of this programme involves statistical analyses of the database, to determine the influence of a range of factors on fatigue life and on cyclic behaviour. Both fatigue stress strain and fatigue life results of welds are compared to weld metal and base metal data. In each situation (strain, stress control cycle, stress, strain range, weld thickness) apparent discrepancies are discussed.

Additional information

Authors: ESCARAVAGE C, Framatome Direction de Novatome, Lyon (FR);LIVESEY V B, UKAEA (GB);WOOD D S, UKAEA (GB);BREITLING H, Interatom;MOTTOT M, CEA, CEN Cadarache, Saint-Paul-lez-Durance (FR);TAVASSOLI A, CEA, CEN Cadarache, Saint-Paul-lez-Durance (FR)
Bibliographic Reference: EUR 14408 EN (1993) 76 pp., FS, ECU 10
Availability: (2)
ISBN: ISBN 92-826-5999-2
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