本发明一种织构稀土CuNiSiCr合金材料及制备工艺和应用，属于引线框架材料生产工艺技术领域，该合金各个组分质量百分比包含1.5-3.0%Ni，1.5-2.5%Si，1.3-1.8%Cr，稀土元素：0.0010.6%Ce，0.001-0.2%La，0.001-0.1%Nb和0.001-0.1%Y，其余为Cu和不可避免的杂质。该方法包括真空熔炼铸造、高温粗轧、高温时效、中温精轧、快速冷却、冷轧、时效处理、拉弯矫直以及去应力退火工艺。本发明的有益效果是:本发明最终获得抗拉强度达到750-850 MPa和导电率达到45-65 %IACS，具有高密度的{111}织构的高强度高导铜镍硅铬合金带材。

The invention relates to a textured rare earth CuNiSiCr alloy material, a preparation process and an application thereof, belonging to the technical field of lead frame material production process. Each component mass percentage of the alloy comprises 1.5-3.0% Ni, 1.5-2.5% Si, 1.3-1.8% Cr, rare Earth elements: 0.0010.6% Ce, 0.001-0.2% La, 0.001-0.1% Nb and 0.001–0.1% Y, the rest are Cu and unavoidable impurities. The process includes vacuum melting casting, high temperature roughing, high temperature aging, medium temperature finishing rolling, rapid cooling, cold rolling, aging treatment, tension straightening and stress relief annealing. The invention has the advantages that the tensile strength reaches 750-850MPA, the conductivity reaches 45-65 %IACS, and the high strength and high conductivity copper-nickel-silicon-chromium Alloy Strip with high density {111} texture is finally obtained.