Copper-chromium-scandium alloy and preparation method thereof

The invention relates to a copper-chromium-scandium alloy and a preparation method thereof, and belongs to the technical field of copper alloy materials. According to the copper-chromium-scandium alloy, Sc is adopted to replace Zr which is easy to burn out, so that the copper alloy with excellent mechanical property, electric conduction and heat conduction properties and high-temperature softening resistance is obtained. According to the copper-chromium-scandium alloy, the electric conductivity is larger than or equal to 82% IACS, the heat conductivity is larger than or equal to 392 W. (m.K)-1, the room-temperature tensile strength is larger than or equal to 470 MPa, the ductility is larger than or equal to 9%, and the product requirements in the fields of high-speed railway contact lines, large-scale integrated circuit lead frames, high-pulse electromagnetic coils, nuclear fusion energy power generation and the like can be met. 本发明涉及一种铜铬钪合金及其制备方法，属于铜合金材料技术领域。本发明的铜铬钪合金，采用Sc替代易烧损元素Zr，获得具有优良力学性能、导电导热性能和抗高温软化性能的