Wu, X.; Jia, H.; Fan, J.; Cao, J.; Su, C. Study on the Effect of Cold Deformation and Heat Treatment on the Properties of Cu-Ag Alloy Wire. Micromachines2023, 14, 1635.
Wu, X.; Jia, H.; Fan, J.; Cao, J.; Su, C. Study on the Effect of Cold Deformation and Heat Treatment on the Properties of Cu-Ag Alloy Wire. Micromachines 2023, 14, 1635.
Wu, X.; Jia, H.; Fan, J.; Cao, J.; Su, C. Study on the Effect of Cold Deformation and Heat Treatment on the Properties of Cu-Ag Alloy Wire. Micromachines2023, 14, 1635.
Wu, X.; Jia, H.; Fan, J.; Cao, J.; Su, C. Study on the Effect of Cold Deformation and Heat Treatment on the Properties of Cu-Ag Alloy Wire. Micromachines 2023, 14, 1635.
Abstract
The effects of various drawing parameters and annealing processes on the structure and properties of Cu-Ag wires, containing 1 wt% silver, were investigated using specialized equipment including fine wire drawing machines, very fine wire drawing machines, heat treatment equipment, tensile testing machines, microcomputer-controlled electronic universal testers, resistance testers, and scanning electron microscopes. The results revealed that continuous drawing of Cu-1%Ag alloy wires led to elongation of the grains, resulting in a uniform and tightly fibrous microstructure. Moreover, the tensile strength of the alloy wire increased from 670 MPa to 783.9 MPa after a single-pass with a deformation of 14%. Subsequently, when the wire was drawn at a speed of 500 m/min, the tensile strength further increased to 820.1 MPa. After annealing the Փ0.08 mm Cu-1% Ag alloy wire, an increase in annealing temperature up to 500°C resulted in the wire's tensile strength decreasing from 820.1 MPa to 377.5 MPa. Simultaneously, the elongation increased from 1.94% to 15.21%, and the resistivity decreased from 1.931×10-8Ω·m to 1.723×10-8Ω·m. Additionally, when annealing was conducted at a rate of 80 m/min, the wire resistivity dropped to 1.635×10-8Ω·m.
Chemistry and Materials Science, Metals, Alloys and Metallurgy
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