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A study of stress-corrosion in Al-Zn-Mg alloys

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Abstract

This study of Al-Zn-Mg alloys was undertaken to establish the specific combination of mechanical and thermal conditions which is necessary for stress-corrosion susceptibility to occur in these alloys. The work included a study by electron transmission microscopy of the microstructure of this alloy system. A new mechanism is proposed to account for the observations made. It suggests that the high corrosion potential at grain boundaries in stress-corrosion susceptibile Al-Zn-Mg alloys is due to segregation of zinc and magnesium. By taking precautions to reduce this segregation, the stress-corrosion life can be increased.

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Authors and Affiliations

  1. Alcan Research and Development, Ltd., Kingston, Canada

    I. T. Taylor (Senior Research Metallurgist) & R. L. Edgar (Research Metallurgist)

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  1. I. T. Taylor
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  2. R. L. Edgar
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Taylor, I.T., Edgar, R.L. A study of stress-corrosion in Al-Zn-Mg alloys. Metall Trans 2, 833–839 (1971). https://doi.org/10.1007/BF02662743

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  • DOI: https://doi.org/10.1007/BF02662743

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