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The work described in this report continues the study of factors affecting the solubility of hydrogen in ferritic steels. The present work concentrates on structure and composition effects which influence the solubility. Hydrogen cracking results whenever, in the unstressed state, the total hydrogen content exceeds the solubility limit - also called the safe hydrogen level. In the presence of stress, failure may occur at an earlier stage, depending on such details as hydrogen level, stress level and whether the steel is severely embrittled in the presence of hydrogen. Work in this project concentrated initially on factors which influence the safe hydrogen level, particularly structure and composition effects. However, in the later phases of the work, an attempt has been made to understand factors contributing to the initiation and growth of hydrogen cracks. The solubility model presented in the earlier work has been updated. Modelling work has also been extended to cover aspects of permeation work. These aspects are examined in later sections of this report.

Additional information

Authors: RANDERSON K, British Steel, Swindon Technology Centre, Rotherham (GB);GAUNT I, British Steel, Swindon Technology Centre, Rotherham (GB);FRETWELL S, British Steel, Swindon Technology Centre, Rotherham (GB);HAYKIN S, British Steel, Swindon Technology Centre, Rotherham (GB)
Bibliographic Reference: EUR 15841 EN (1996) 76pp., FS, ECU 10.00
Availability: Available from the (2)
ISBN: ISBN 92-827-6972-0
Record Number: 199410962 / Last updated on: 1996-04-23
Original language: en
Available languages: fr,de,en
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