Abstract: High-performance copper alloys with enhanced strength, conductivity, and toughness are critical in in-dustrial applications, yet achieving this combination of properties in a bulk form remains challenging, as many strength-enhancing grain refinement methods are limited to small-scale production. This study investigates the development of Cu-Ni-Be alloys with high strength, high conductivity, and excellent duc-tility using rotary swaging (RS) as the primary processing method, followed by aging treatments. The RS process, known for its advantages in industrial-scale applications, enables the formation of fibrous, elon-gated grains with strong axial alignment, resulting in improved conductivity along the wire direction. Additionally, the triaxial compressive stresses inherent in RS promote effective dislocation accumulation, producing an alloy with a strength of 706 MPa, uniform elongation of 1.4 %, and conductivity of 35 % in-ternational annealed copper standard (IACS) in the as-swaged state. Optimized aging treatments further improve the comprehensive performance of the alloy, increasing its strength to 1064 MPa, uniform elon-gation to 10.4 %, and conductivity to 46 % IACS through the formation of dispersed nanoscale precipitates. These findings demonstrate that the Cu-Ni-Be alloy processed by RS and aging achieves a unique balance of tensile strength, ductility, and conductivity, making it highly suitable for industrial applications. This establishes RS as a viable approach for producing advanced Cu-Ni-Be alloys with tailored properties for the electrical and structural industries.

Key words: Cu-Ni-Be, alloy, Rotary, swaging, Comprehensive, performance, Industrial, applications