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International Workshop on the Environmental Damage in Structural Materials Under Static Load/Cyclic Loads at Ambient Temperatures
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Investigation Of Electrochemically-Induced Repassivation Of Al 7075-T6 And Al 2024-T3 As A Function Of Applied Stress And Galvanic Corrosion, Monica Trueba, Stefano P. Trasatti, Daniele Guastaferro, Michele Ferri, Marina Cabrini
Investigation Of Electrochemically-Induced Repassivation Of Al 7075-T6 And Al 2024-T3 As A Function Of Applied Stress And Galvanic Corrosion, Monica Trueba, Stefano P. Trasatti, Daniele Guastaferro, Michele Ferri, Marina Cabrini
International Workshop on the Environmental Damage in Structural Materials Under Static Load/Cyclic Loads at Ambient Temperatures
The repassivation behavior of Al alloys 7075-T6 and 2024-T3 was investigated by means of pitting scan (PS) technique (Fig. 1) (Trueba, Trasatti, 2015). The effect of mechanical load and galvanic coupling was estimated by considering principally the electrochemical characteristics of the reverse curve, namely the pit transition potential (Eptp), the associated current density (iptp) and the steepness. The load levels explored were mostly below the elastic limit, using four point bent-beam (4PBB) stress-corrosion test specimens (ASTM G39-99). CRES 304 or Ti6Al4V alloy were physically joined with Al sheet for simulating stress-induced galvanic corrosion. Different experimental variables (e.g. irev, [Cl-], pH, …