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MODIFICATIONS OF MICROSTRUCTURE AND CORROSION RESISTANCE IN AA 2024-T3 BUTT JOINTS

Auteurs : M. Mokhtari, S. TLILI, N.E BELIARDOUH, A. Boukari
Année : 2010
Domaine : Chimie
Type : Communication
Conférence: Conférence Internationale sur le Soudage, le CND et l’Industrie des Métaux, IC-WNDT-MI’10
Résumé en PDF : (résumé en pdf)
Fulltext en PDF : (.pdf)
Mots clés : welding, Tungsten inert gas, corrosion, polarization curve test, Electrochemical impedance spectroscopy

Résumé :

An experimental investigation has been carried out, in present paper, on microstructure and corrosion resistance of weld butt of AA 2024-T3. Conventional tungsten inert gas (TIG) welding processes have been considered. Micro-hardness measurements allow pointing out a general decay of mechanical properties of TIG joints, mainly due to high temperature experienced by material. Polarization curve tests and electrochemical impedance spectroscopy, performed in this paper, allow assessing a generalized nobler behavior of weld bead with respect to parent alloy