Résistance à la corrosion des joints soudés par le procédéTIG, d’un assemblage hétérogène 304L /A9étamé, dansNaCl 32g/l.

Auteur : Badr Eddine MAALEM
Année : 2015
Domaine : Métallurgie
Type : Mémoire de magister
Etablissement : Université Badji Mokhtar de Annaba
Résumé en PDF :  (résumé en pdf)
Fulltext en PDF :  (.pdf)
Mots clés : heterogeneous welding, TIG, galvanic corrosion, rustproof steel.

Résumé :

The heterogeneous welding of extra-soft steel A9 and a rustproof austenitic steel AISI304Lhas been achieved by the TIG process (autogeneous welding).Soldering have been made in the goal to substitute the mechanical assembly (clinch, bolting)in certain applications. In the other hand, to value the resistance to the corrosion of jointswelded to certain types of corrosion galvanic coupling for example.Three profiles have been achieved; the two welded separately the extra-soft steel A9 andrustproof austenitic steel AISI304L then together steels.A comparison of corrosion parameters (speed of corrosion, potential and current of corrosion)of the three profiles shows that the heterogeneous joint is good resistant in a saline solutionaired without agitation to 32g/l NaCl that homogeneous assembly A9.