HIGH STRENGTH AND HIGH ELECTRIC CONDUCTIVE MULTI-LAYER COPPER SHEETS AND MANUFACTURING METHOD OF THE SAME

摘要

PURPOSE: A multi-layered nanocrystalline copper alloy plate with high strength and electric conductivity and a manufacturing method thereof are provided to obtain various conductivity and high tensile strength through repeated ARB(Accumulative Roll-Bonding). CONSTITUTION: A method for manufacturing a multi-layered nanocrystalline copper alloy plate(10) with high strength and electric conductivity is as follows. A plate made of an OFC(Oxygen Free Copper) alloy(12) and DLP(Deoxidized Low-Phosphorous copper) alloy(14) is formed. A surface of the plate is processed. The multi-layered nanocrystalline copper alloy plate with more than 85IACS(%) conductivity and 400MPa tensile strength is formed by repeatedly roll-bonding the plate.