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The aim of this research was to extend previous work on a CRM model to cover a larger temperature range and to include welded joints. This CRM model is used for calculation of critical defect lengths in wide plate tests, according to the full yield criterion, using as entry parameters the tensile and the impact Charpy properties of the base metal. The experimental study concerned steels produced by accelerated cooling, in the grades Fe E420 or API X60-X70, with thicknesses between 7 and 20 mm. Besides studies at -20 C, tests were performed down to -60 C on specimens of base metal having a sharp through thickness defect. On welded joints, wide plate tests with through thickness defects were performed between -20 and -40 C. Various choices of weld metal and welding heat inputs were considered. The influence of internal stresses was measured by means of strain-gauges.

Additional information

Authors: D'HAEYER R, Centre de Recherches Métallurgiques, Liège (BE);DEFOURNY J, Centre de Recherches Métallurgiques, Liège (BE)
Bibliographic Reference: EUR 13281 EN (1991) 83 pp., FS, ECU 11.25
Availability: (2)
ISBN: ISBN 92-826-0539-6
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