Copper alloy strip and preparation method and application thereof

• Main Authors: PENG LIJUN, XIE HAOFENG, MI XUJUN, YANG ZHEN
• Format: Patent
• Language: Chinese; English
• Published: 03.10.2023
• Subjects: ALLOYS; BASIC ELECTRIC ELEMENTS; CABLES; CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS; CHEMISTRY; CONDUCTORS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; INSULATORS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; PERFORMING OPERATIONS; PUNCHING METAL; ROLLING OF METAL; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; SEMICONDUCTOR DEVICES; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention provides a copper alloy strip and a preparation method and application thereof, and relates to the technical field of non-ferrous metal processing. By optimizing the components of the copper alloy strip and controlling the size and precipitation density of the primary phase, the obtained copper alloy strip has low residual stress, high strength, high conductivity and good high-temperature softening resistance. The result of the embodiment shows that the tensile strength sigma b of the copper alloy strip is 540-700 MPa, the plastic elongation delta is 1-5%, the electric conductivity is 75-85% IACS, the high-temperature softening temperature is 550-600 DEG C, the macroscopic plate shape stability control is smaller than or equal to 1.0 I, the warping height of the strip obtained after a chemical etching method is smaller than or equal to 2 mm, and compared with a C19400 (Cu-Fe-P) alloy, the copper alloy strip has higher strength and electric conductivity, and the tensile strength sigma b of the co