Copper alloy and copper alloy manufacturing method
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United States of America Patent
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app pub date -
Mar 18, 2005
filing date -
Mar 29, 2004
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Abandoned
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Abstract
An object of the present invention is to provide copper alloy which has a dimensionless performance index value M satisfying an inequality: M>400 in either a binary system alloy composition containing Cu and Zr, or a ternary system alloy composition containing Cu, Zr, and B. In the copper alloy of the present invention, a composition by atomic percent is expressed by a composition formula: Cu.sub.100-(a+b)Zr.sub.aB.-sub.b, and a dual phase structure having a layered structure including a plurality of Cu matrices constituted by grain particles and an eutectic phase constituted by the Cu matrix and any of a Cu--Zr compound and a Cu--Zr--B compound is constituted. Part of each of the grain particles contacts other grain particles, and the 'a', the 'b', and the '(a+b)' satisfy 0.05.ltoreq.a.ltoreq.8.0, 0.ltoreq.b.ltoreq.4.0, and a+b.ltoreq.8.0.
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