METHOD FOR PRODUCING ALUMINUM-COPPER ALLOYS CONTAINING SCANDIUM
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United States of America Patent
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Issued Date -
Oct 27, 2022
app pub date -
Apr 25, 2022
filing date -
Apr 25, 2022
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Abstract
A method of producing a wrought aluminum alloy product is disclosed comprising Cu, Mn, Zr, Sc and Ti. The method includes casting an unwrought billet, ingot or shape from a liquid metal bath, and homogenizing the unwrought billet, ingot or shape at an equivalent time at temperature. The homogenization process includes first stage heating within a relatively low temperature range, second stage heating within an intermediate temperature range, and third stage heating at a relatively high temperature. After homogenizing, the billet, ingot or shape is worked into an extruded product, solution heat treated, quenched, stretched to a permanent set, and artificially aged. The extruded aluminum alloy product has desirable mechanical properties and electrical conductivity.
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