Effect of Ultrasonic Surface Rolling Treatment on Corrosion Behavior of Alloy 690
The nanograins (NG) on the top surface layer of alloy 690 were successfully prepared by ultrasonic surface rolling treatment (USRT). The average grain size of NG alloy 690 was 55 nm, and the thickness of the NG surface layer was about 1 μm. Meanwhile, the surface roughness was significantly reduced...
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MDPI AG
2020-07-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/10/7/917 |
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| author | Jiang Liu Junbiao Liu Xuehui Zhang Tahir Ahmad Tongxiang Liang Longfei Zeng Chunming Wang Bin Yang |
| author_facet | Jiang Liu Junbiao Liu Xuehui Zhang Tahir Ahmad Tongxiang Liang Longfei Zeng Chunming Wang Bin Yang |
| author_sort | Jiang Liu |
| collection | DOAJ |
| description | The nanograins (NG) on the top surface layer of alloy 690 were successfully prepared by ultrasonic surface rolling treatment (USRT). The average grain size of NG alloy 690 was 55 nm, and the thickness of the NG surface layer was about 1 μm. Meanwhile, the surface roughness was significantly reduced after surface nanocrystalliztion. The corrosion behavior of alloy 690 before and after USRT was studied in a secondary side environment containing chloride. Electrochemical corrosion experiments demonstrated that the passive film generated by USRT was denser than that formed on coarse-grained (CG) alloy 690. Pitting corrosion was prone to occur in grain boundaries of CG alloy 690, and the pits on the surface of NG alloy 690 were smaller than those generated on CG alloy 690 after 1000 h of an immersion experiment. |
| first_indexed | 2024-03-10T18:36:01Z |
| format | Article |
| id | doaj.art-e4718e0930dd489b8b31fd5e94b59e87 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T18:36:01Z |
| publishDate | 2020-07-01 |
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| series | Metals |
| spelling | doaj.art-e4718e0930dd489b8b31fd5e94b59e872023-11-20T06:18:26ZengMDPI AGMetals2075-47012020-07-0110791710.3390/met10070917Effect of Ultrasonic Surface Rolling Treatment on Corrosion Behavior of Alloy 690Jiang Liu0Junbiao Liu1Xuehui Zhang2Tahir Ahmad3Tongxiang Liang4Longfei Zeng5Chunming Wang6Bin Yang7Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, ChinaFaculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, ChinaFaculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, ChinaDepartment of Metallurgy and Materials Engineering, CEET, University of the Punjab, Lahore 54500, PakistanFaculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, ChinaFaculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, ChinaFaculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, ChinaFaculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, ChinaThe nanograins (NG) on the top surface layer of alloy 690 were successfully prepared by ultrasonic surface rolling treatment (USRT). The average grain size of NG alloy 690 was 55 nm, and the thickness of the NG surface layer was about 1 μm. Meanwhile, the surface roughness was significantly reduced after surface nanocrystalliztion. The corrosion behavior of alloy 690 before and after USRT was studied in a secondary side environment containing chloride. Electrochemical corrosion experiments demonstrated that the passive film generated by USRT was denser than that formed on coarse-grained (CG) alloy 690. Pitting corrosion was prone to occur in grain boundaries of CG alloy 690, and the pits on the surface of NG alloy 690 were smaller than those generated on CG alloy 690 after 1000 h of an immersion experiment.https://www.mdpi.com/2075-4701/10/7/917alloy 690ultrasonic surface rolling treatmentcorrosion resistancepitting corrosionalkaline secondary side environment |
| spellingShingle | Jiang Liu Junbiao Liu Xuehui Zhang Tahir Ahmad Tongxiang Liang Longfei Zeng Chunming Wang Bin Yang Effect of Ultrasonic Surface Rolling Treatment on Corrosion Behavior of Alloy 690 Metals alloy 690 ultrasonic surface rolling treatment corrosion resistance pitting corrosion alkaline secondary side environment |
| title | Effect of Ultrasonic Surface Rolling Treatment on Corrosion Behavior of Alloy 690 |
| title_full | Effect of Ultrasonic Surface Rolling Treatment on Corrosion Behavior of Alloy 690 |
| title_fullStr | Effect of Ultrasonic Surface Rolling Treatment on Corrosion Behavior of Alloy 690 |
| title_full_unstemmed | Effect of Ultrasonic Surface Rolling Treatment on Corrosion Behavior of Alloy 690 |
| title_short | Effect of Ultrasonic Surface Rolling Treatment on Corrosion Behavior of Alloy 690 |
| title_sort | effect of ultrasonic surface rolling treatment on corrosion behavior of alloy 690 |
| topic | alloy 690 ultrasonic surface rolling treatment corrosion resistance pitting corrosion alkaline secondary side environment |
| url | https://www.mdpi.com/2075-4701/10/7/917 |
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