本发明公开了一种高强高导耐热的铜合金材料及其制备方法，所述高强高导耐热的铜合金由以下成分组成:Cr 0.2-1.0wt%、Mg 0.05-0.2wt%、Si 0.03-0.2wt%、Ni 0-0.1wt%、Ce 0-0.15wt%、余量为Cu；所述的铜合金的制备方法包括熔炼-铸造-均匀化-热轧-固溶-组合形变热处理几个步骤。本发明的铜合金在成分设计上，采用了廉价、易添加、不易烧损的元素代替易烧损元素，通过合金元素成分设计改变了析出相析出序列和形核长大机制，使得该体系合金具有优良的耐高温性能和抗软化能力;并通过组合形变热处理大幅度提高合金的力学性能和电学性能，使得合金的抗拉强度达到了530-620 MPa，电导率达到了75-87 %IACS。本发明制备的高强高导耐热的铜合金材料适合非真空大规模产业化制造。

The invention discloses a copper alloy material with high strength, high conductivity and heat resistance and a preparation method thereof, the copper alloy with high strength, high conductivity and heat resistance is composed of Cr 0.2-1.0 wt%, Mg 0.05-0.2 wt%, Si 0.03-0.2 wt%, Ni 0-0.1 wt%, Ce 0-0.15 wt% and residual Cu The preparation method of the copper alloy comprises the steps of melting, casting, homogenizing, hot rolling, solid solution and combined deformation heat treatment. In the composition design of the copper alloy, the elements that are cheap, easy to be added and not easy to be burned are used instead of the elements that are easy to be burned, the mechanical and electrical properties of the alloy can be greatly improved by combined deformation heat treatment, and the tensile strength of the alloy can reach 530-620 MPa, the conductivity reached 75-87 %IACS. The copper alloy material with high strength, high conductivity and heat resistance prepared by the invention is suitable for non–vacuum large–scale industrial manufacture.