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| Scanning Electron Fractographs of Stress Corrosion Cracking of Al-Zn-Cu-Mg and A1-Cu-Mg in Aqueous Solution Containing Chloride |
| Wu Difan; Pan Huiying; Fang Yuqin (Shanghai Institute of Metallurgy;The Academy of Sciences of China) |
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Abstract The scanning electron fractographs of stress corrosion cracking of Al—Zn—Cu—Mg and Al—Cu—Mg in aqueous solution containing chloride were stutied. Stress corrosion cracking was produced by slow strain rate method. It was found that on the stress corrosion cracking surfaces of the two alloys there was a corrosion product layer which showed various different scanning electron fractographs, such as smooth flat feature resembling cleavage fracture, or "mud-crack pattern" and so on. These, howerer,are not the inherent and real morphologic features of stress corrosion cracking which are actually the same for both alloys under all testing conditions and have typical intergranular cracking feature. The morphology of the corrosion product layer depends on pH of the environment and on potential. The inherent and real scanning electron fractographs of stress corrosion cracking of aluminium alloys can be visualized after removal of the corrosion product layers by chemical method.
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Received: 25 June 1981
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Cite this article:
Wu Difan; Pan Huiying; Fang Yuqin (Shanghai Institute of Metallurgy;The Academy of Sciences of China). Scanning Electron Fractographs of Stress Corrosion Cracking of Al-Zn-Cu-Mg and A1-Cu-Mg in Aqueous Solution Containing Chloride. J Chin Soc Corr Pro, 1981, 1(3): 72-75.
URL:
https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1981/V1/I3/72
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