Method for fabricating a copper alloy and copper alloy fabricated by the same
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United States of America Patent
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Issued Date -
Dec 23, 2010
app pub date -
Jun 1, 2010
filing date -
Jun 18, 2009
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Abstract
A method for fabricating a copper alloy. Cu and Cr, Zr, and Sn to be doped to the Cu are melt to cast a copper alloy material. Hot working is carried out on the copper alloy material to form a plate material having a rolled texture. Heat treatment is carried out on the plate material. Cold rolling with workability of 80% or more and less than 90% is carried out on the plate material after the heat treatment to form an intermediate plate material. Aging treatment is carried out on the intermediate plate material. Another cold rolling with workability of 20% to 40% is carried out as finish rolling on the intermediate plate material after the aging treatment step. The intermediate plate material after the finish rolling step is heated as stress relief annealing.
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