Effects of loads and speeds on friction and wear properties of Cu-Ti alloys processed by combination aging treatments

The friction-wear properties of conductive elastic connectors are rarely reported but are important. The Cu-8Ti-0.4Cr-0.4 Mg, Cu-8Ti-0.4Cr-0.4Mg-0.3Al, Cu-8Ti-0.4Cr-0.4Mg-0.3Fe (in atom%) were fabricated and studied, and after treated by CR 60% + 450 & DEG;C/30min + CR 50% + 400 & DEG;C/120 min + 400 & DEG;C/1 min their hardness achieved to 447 HV, 446 HV, and 437 HV, respectively. The effects of loads and speeds on the friction and wear behavior of the studied Cu-Ti alloys were investigated by friction and wear testing machines. The wear mechanism of the alloy is mainly abrasive wear, as tested at a load of 50 N and a speed of 121 mm/s. While the wear mechanisms of the alloy are mainly oxidation wear, adhesive wear, and abrasive wear, as tested at a load of 100 N and a speed of 363 r/min. These findings bring an extended understanding of the friction and wear application of ultra-high strength conductive Cu-Ti alloys. & COPY; 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).