Effects of Ultrasonic Shot Peening on the Corrosion Resistance and Antibacterial Properties of Al0.3Cu0.5CoCrFeNi High-Entropy Alloys
Source abstract
Abstract
Cu-bearing high-entropy alloys (HEAs) have been proposed for use as structural materials in the marine environment due to their superior mechanical and antimicrobial properties. However, the Al, Cu-enriched precipitations in HEAs damage their corrosion resistance. In this study, we used ultrasonic shot peening (USSP) technology to solve this problem. USSP caused severe plastic deformation of the Al0.3Cu0.5CoCrFeNi HEA surface and dispersed the long-strip Al, Cu-enriched phases into scattered dots, which reduced the galvanic corrosion of the HEA and enhanced passive film formation. The Al, Cu-enriched scattered precipitations also increased the number of Cu2+ ion dissolution sites, leading to the improvement of the alloy’s antibacterial properties.
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Research context
OpenAlex topics: High Entropy Alloys Studies · High-Temperature Coating Behaviors · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Materials Science and Hydrogen Energy, Foshan University, Foshan 528000, China
National Materials Corrosion and Protection Data Center, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China
College of Materials Science and Engineering, Hunan University, Changsha 410082, China
BRI Southeast Asia Network for Corrosion and Protection (MOE), Shunde Innovation School of University of Science and Technology Beijing, Foshan 528000, China
Funding
Guangdong Basic and Applied Basic Research Foundation · China Postdoctoral Science Foundation · National Natural Science Foundation of China
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