ALUMINUM ALLOYS WITH ENHANCED FORMABILITY AND ASSOCIATED METHODS
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United States of America Patent
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Issued Date -
Nov 2, 2017
app pub date -
Apr 28, 2017
filing date -
May 2, 2016
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Abstract
Disclosed is an aluminum alloy for aluminum bottle applications, including methods of producing highly shaped aluminum products, such as bottles or cans, formed of the aluminum alloy. In some cases, the aluminum alloy has improved high strain rate formability at elevated temperatures and improved earing, which results in reduced spoilage rates. In one non-limiting example, the disclosed alloys have εstable values greater than or equal to 0.035, where εstable=εF−εS and εS represents the strain at which work hardening stage IV starts and εF represents the strain at which diffuse necking ends. In some cases, the disclosed alloys have an earing balance from about −3.5% to about 2% and a mean earing of less than or equal to 5.5%.
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