Secular change in corrosion rate of cold rolled 5083 aluminum alloy in alkaline solution.
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概要
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The corrosion rate and the residual stress of 5083 aluminum alloy sheets cold rolled after annealing or sensitizing were measured as a function of room temperature aging time after rolling. An age-softening-like secular change appeares for the annealed specimens, but not for the sensitized ones. The residual stress induced by rolling decreases with aging time, and reaches an almost constant value regardless of the rolling reduction ratio, after aging for 10 days and above. The corrosion rate also decreases with aging time, and reaches a constant value after long time aging in the case of sensitized specimens. But in the annealed specimens the rate with the total reduction ratio changes into a monotonously increasing type. This is probably because of the precipitation during aging. Taking such effect of precipitation into account the residual stress and the corrosion rate show the good correspondence.
- 一般社団法人 軽金属学会の論文
一般社団法人 軽金属学会 | 論文
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