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>Technology for Predicting Residual Stress in Extruded Members of 7000 Series Aluminum Alloy Considering Heat Treatment Process
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Technology for Predicting Residual Stress in Extruded Members of 7000 Series Aluminum Alloy Considering Heat Treatment Process
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机译：Technology for Predicting Residual Stress in Extruded Members of 7000 Series Aluminum Alloy Considering Heat Treatment Process
Extruded members of 7000 series aluminum alloy, which has the highest 0.2 proof stress among aluminum alloys, is effective for automotive weight reduction. However, its high sensitivity to stress corrosion cracking (SCC) makes it important to manage residual tensile stress in the members. This paper describes an equation to predict residual stress after artificial aging treatment or after the paint baking process from the residual stress caused by plastic forming during Tl tempering of 7000 series aluminum alloy on the basis of the creep test results of 2 types of newly developed alloys and an extruded material made of standard 7003 alloy. It has been clarified that the artificial aging and paint baking process for extruded members of 7000 series alloy significantly reduce the tensile residual stress caused by plastic forming during the Tl tempering, reducing the risk of SCC.
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