Ultrasonic shot peening improved corrosion resistance of the Al0.3Cu0.6CoCrFeNi high-entropy alloy by refining segregation and grain

被引：2
作者：
Chen, Xudong [1 ,2 ]
Lou, Yuntian [3 ]
Guo, Dawei [4 ]
Chang, Weiwei [3 ]
Qian, Hongchang [3 ]
Chen, Dongchu [1 ,2 ]
Zhang, Dawei [3 ]
机构：
[1] Foshan Univ, Sch Mat & Energy, Foshan 528000, Peoples R China
[2] China Natl Light Ind, Key Lab Green Surface Technol & Funct Coatings Mat, Foshan 528000, Peoples R China
[3] Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Natl Mat Corros & Protect Data Ctr, Beijing 100083, Peoples R China
[4] IDQ Sci & Technol Dev Hengqin Guangdong Co Ltd, Hengqin, Guangdong, Peoples R China
来源：
CORROSION SCIENCE | 2025年 / 246卷
关键词：
High entropy alloy; Segregation; Ultrasonic shot peening; Corrosion resistance; STAINLESS-STEEL; PASSIVE FILM; NANOCRYSTALLINE; 304-STAINLESS-STEEL; ANNEALING TREATMENT; BEHAVIOR; MICROSTRUCTURE; MECHANISM; EIS; AL;
D O I：
10.1016/j.corsci.2025.112717
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this work, the corrosion resistance of the Al0.3Cu0.6CoCrFeNi high-entropy alloy (HEA) treated by ultrasonic shot peening (USSP) was investigated. The results showed that the USSP dispersed the massive Al, Cu-enriched phases and refined the grains on the alloy surface. The HEA treated with USSP for 10 min performed superior corrosion resistance with a lower corrosion current density and the highest charge transfer resistance. The USSP could reduce the potential difference between the alloy matrix and the segregation phase, and increase the density of twins or grain boundaries on the alloy surface, which facilitated the formation of a homogenous and compact passive film.
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页数：13
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