Characterization of a welded joint in steel API.5L.X70 having undergone successive repairs

Type : Article de conférence
Auteur(s) :  B. MAAMACHE, M.BOUABDALLAH, H.BRAHIMI, Y. YAHMI, M. NOUREDDINE
Année :  2012
Domaine : Sciences des matériaux
Conférence: Materials science engineering MSE
Résumé en PDF :  (résumé en pdf)
Fulltext en PDF :  (.pdf)
Mots clés :  welding, Repair, Thermal cycle, Heat affected zone

Résumé : 

The object of this paper is to study the effect of the successive repairs on the weldment quality, knowing that these repairs constitute a main problem in the hydrocarbons transportation industry. We study the effect of several thermal cycles welding on the microstructural welding joints evolution, particularly the heat affected zones and its extend. We weld and repair many times a steel sample used in the hydrocarbons transportation. The metallographic analysis and mechanical tests results show the harmful effect of repairs that cause a prejudice on the life of weldment