Production manner and high intensity high conductive copper alloy null mass of the high intensity high conductive

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing a high-strength and high-conductivity copper alloy superior in both of strength and electroconductivity.;SOLUTION: The copper alloy comprises one additional element selected from the group consisting of Fe, Cr, Ta, V, Nb, Mo and W in an amount of 7 to 50% by mass%, and the balance Cu with unavoidable impurities. The manufacturing method includes repeating the first step of stacking two or more rolled materials of the copper alloy and the second step of rolling the stacked rolled material in the stacked direction once or more times in this sequential order, until an average aspect ratio At (t2/t1) of a second phase 4 including the additional element in the final rolled material becomes 10 or more when viewed in a cross section orthogonal to a rolling direction.;COPYRIGHT: (C)2006,JPO&NCIPI