Synergistic Effect Between Cavitation Erosion and Corrosion for Friction Stir Processed NiAl Bronze in Artificial Seawater

• Published in: Metals and materials international Vol. 27; no. 12; pp. 5082 - 5094
• Main Authors: Li, Yang, Lian, Ying, Sun, Yanjun
• Format: Journal Article
• Language: English
• Published: Seoul The Korean Institute of Metals and Materials 01.12.2021; Springer Nature B.V; 대한금속·재료학회
• Subjects: Aluminum bronzes; Cavitation; Cavitation erosion; Cavitation resistance; Characterization and Evaluation of Materials; Chemistry and Materials Science; Corrosion; Corrosion effects; Damage; Distilled water; Engineering Thermodynamics; Erosion mechanisms; Erosion resistance; Erosion-corrosion; Flow control; Friction stir processing; Heat and Mass Transfer; Machines; Magnetic Materials; Magnetism; Manufacturing; Materials Science; Metallic Materials; Microhardness; Microstructure; Nickel aluminides; Nickel base alloys; Nickel compounds; Processes; Seawater; Solid Mechanics; Synergistic effect; 재료공학; Cavitation erosion resistance; Nickel aluminum bronze; Synergistic effect; Cavitation erosion mechanism; Friction stir processing
• ISSN: 1598-9623; 2005-4149
• DOI: 10.1007/s12540-020-00916-1

Herein, the friction stir processing (FSP) method was adopted to modify the microstructure of as-cast nickel aluminum bronze (NAB). The microhardness, cavitation erosion-corrosion mass loss, morphological damage and electrochemical tests were extensively examined. The results show that FSP can refine and uniform the microstructure of as-cast NAB alloy. FSP NAB alloy displays enhanced cavitation erosion resistance in distilled water and artificial seawater, as well as heightened sensitive to corrosive media in artificial seawater. Quantitative analysis of the synergistic effect between cavitation erosion and corrosion shows that pure cavitation erosion components contributions largest for as-cast NAB. In contrast, FSP NAB is greatly influenced by the synergistic effect component. The damaged surface shows that cavitation erosion mechanisms of as-cast NAB in distilled water and artificial seawater are similar, which is not the case for FSP NAB due to the synergistic effect between cavitation erosion and corrosion. Graphic Abstract