TAILORED ROLLING OF HIGH STRENGTH ALUMINUM
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United States of America Patent
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Issued Date -
Aug 27, 2015
app pub date -
Feb 25, 2014
filing date -
Feb 25, 2014
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Abstract
A method of processing high strength aluminum sheet is provided. The method may comprise uncoiling a coil of O or F-temper 6xxx or 7xxxx series aluminum alloy sheet, tailored rolling the sheet to form a tailored rolled sheet having at least two different thicknesses, blanking the tailored rolled sheet to form a tailored rolled blank (TRB), hot stamping the tailored rolled blank to form a component, and age hardening the component. The tailored rolling operation may reduce the thickness of the aluminum sheet by up to 60% in selected regions. The method may include a hot stamping process for age hardening aluminum alloys that solution heat treats and quenches the TRB. The method may be used to form lightweight, high-strength aluminum vehicle components having a controlled thickness profile to reduce component part weight.
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