Enhancing the tribological performance of titanium alloy with laser-cladded Cu-containing coating

作者：Hongjun Zhang, Yi Huang, Changqing Zhang, Changwei Su, Shengfeng Guo · 发表于：Journal of Materials Research and Technology · 年份：2025 · DOI：10.1016/j.jmrt.2025.12.042 · 被引用次数：5 · 研究领域：High Entropy Alloys Studies、Titanium Alloys Microstructure and Properties、Additive Manufacturing Materials and Processes

Titanium alloys are widely used in marine applications, but their poor wear resistance limits their performance. Here, coatings with different Cu contents (0–9 wt.%) were fabricated on Ti80 alloy via laser cladding. The Cu-free coating comprises α′ martensite, whereas the Cu-containing coatings comprise both α′ martensite and Ti 2 Cu phases. The 9 wt.% Cu coating exhibits twice the hardness of the substrate, resulting from the solid solution strengthening, precipitation hardening, and grain refinement. Furthermore, wear resistance was improved significantly, with the 9 wt.% Cu coating exhibiting a wear rate reduced to just 6 % of the substrate, which attributed to the enhanced hardness, the lubricating effect of Cu, and Ti 2 Cu precipitation. This work offers a promising strategy for developing high-performance, wear-resistant of Ti alloy coatings for marine applications.