Method for manufacturing copper alloy and copper alloy
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United States of America Patent
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Jun 25, 2019
Grant Date -
Mar 24, 2016
app pub date -
Dec 1, 2015
filing date -
Jun 4, 2013
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Abstract
A method for manufacturing a copper alloy of the present invention is a method for manufacturing a Cu—Ni—Sn-based copper alloy and includes: a first aging treatment step of performing an aging treatment in a temperature range of 300° C. to 500° C. using a solution treated material; an inter-aging processing step of performing cold working after the first aging treatment step; and a second aging treatment step of performing an aging treatment in a temperature range of 300° C. to 500° C. after the inter-aging processing step. In the first aging treatment step, a peak aging treatment is preferably performed. In addition, in the second aging treatment step, the aging treatment is preferably performed for a short period as compared to that of the aging treatment in the first aging treatment step. In the inter-aging processing step, cold working is preferably performed at a processing rate of more than 60% to 99%.
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