Abstract
This paper describes a numerical analysis which relates the sulphur content of structural steel and hydrogen induced cracking in welded-joints. Transient hydrogen concentration and hydrostatic pressure at the joint were calculated based on a mathematical model.
The study indicates that, to reduce the possibility of cracking, both hydrogen and sulphur contents should preferrably be kept minimal. If considerably high hydrogen input of electrodes (greater than 15 cc/100 gm dep. metal) is unavoidable, then materials with sulphur content less than 0.010% should not be used.
Résumé
Le mémoire décrit une analyse numérique relative à la teneur en soufre d'un acier de construction et à la fissuration due à l'hydrogène dans les joints soudés. On a calculé la concentration en hydrogène transitoire et la pression hydrostatique dans la soudure en se basant sur un modèle mathématique.
L'étude indique que si l'on veut réduire la possibilité de fissuration, les teneurs en hydrogène et en soufre devraient être aussi basses que possible. Si des quantités importantes d'hydrogène sont introduites par les électrodes (supérieures à 15 cm 3/100 gr de métal déposé), et inévitables, des matériaux avec des teneurs en soufre inférieures à 0,010% ne devraient pas être utilisées.
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Betz, E., Leung, H.K. The effect of sulphur content in hydrogen induced cracking of steel weldment. Int J Fract 16, 317–325 (1980). https://doi.org/10.1007/BF00018235
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DOI: https://doi.org/10.1007/BF00018235