Effect of Particle Hardening in Copper--Iron Composite Fiber Materials on Mechanical and Electrical Properties

摘要

Composite materials containing 20% and 2% iron were produced by simultaneous hot extrusion of copper and iron. The properties of these composites were examined after extrusion, annealing, aging, and cold working. The mechanical and electrical properties of the composites can be varied by hardening after annealing in a temperature range of 750 to 1050 exp 0 C and aging at 500 exp 0 C. In so doing, the modulus of elasticity and tensile strength can be increased without decreasing the electrical conductivity below sigma = 35 m/mm exp 2 omega . After hot extrusion and cold working, a composite containing 2% iron by volume reached a tensile strength of R/sub m/ = 390 N/mm exp 2 with an electrical conductivity of sigma = 45 m/mm exp 2 omega . (ERA citation 04:019731)