The stress corrosion cracking (SCC) behavior of 7050-T7451 aluminum alloy in 3.5 wt% NaCl solution has been studied using slow strain rate testing (SSRT) technique. The effects of strain rate, solution pH and dissolved oxygen on the SCC behavior of the aluminum alloy has been investigated. The experimental results show that specimen with short transversal orientation is most susceptible to SCC at a strain rate of 8.0x10−7/s. The results also indicate that the SCC susceptibility of 7050-T7451 alloy in 3.5 wt% NaCl solution increases with the presence of dissolved oxygen or with increasing the solution acidity.

Subject
Test methods, Strain rate, Materials, Intergranular stress corrosion cracking, Metal surfaces, Crack initiation, Acidity, Sodium chloride solution, Caustic stress corrosion cracking, Aluminum alloys, Alloys, Stress corrosion cracking, Ductility
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1989
Association for Materials Protection and Performance (AMPP)
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