Corrosion Fatigue Behavior of Twin Wire Arc Sprayed and Machine Hammer Peened ZnAl4 Coatings on S355 J2C + C Substrate
Offshore installations, e.g., offshore wind turbines and pipelines, are exposed to various mechanical loads due to wind or waves and corrosive loads such as seawater or mist. ZnAl-based thermal sprayed coatings, often in conjunction with organic coatings, provide sufficient corrosion protection and...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-03-01
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| Series: | Corrosion and Materials Degradation |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2624-5558/3/1/7 |
| _version_ | 1827649559425187840 |
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| author | Michael P. Milz Andreas Wirtz Mohamed Abdulgader Anke Kalenborn Dirk Biermann Wolfgang Tillmann Frank Walther |
| author_facet | Michael P. Milz Andreas Wirtz Mohamed Abdulgader Anke Kalenborn Dirk Biermann Wolfgang Tillmann Frank Walther |
| author_sort | Michael P. Milz |
| collection | DOAJ |
| description | Offshore installations, e.g., offshore wind turbines and pipelines, are exposed to various mechanical loads due to wind or waves and corrosive loads such as seawater or mist. ZnAl-based thermal sprayed coatings, often in conjunction with organic coatings, provide sufficient corrosion protection and are well established for applications in marine environments. In this study, machine hammer peening (MHP) is applied after twin wire arc spraying to improve corrosion fatigue behavior through increased hardness, reduced porosity, and roughness compared to as-sprayed coatings. Mn-alloyed structural steel S355 J2 + C with and without ZnAl4 coating as well as with MHP post-treated ZnAl4 coating were cyclically loaded in 3.5% NaCl solution. MHP leads to a uniform coating thickness with lower porosity and roughness. ZnAl4 coating and MHP post-treatment improved corrosion fatigue behavior in the high cycle fatigue regime with an increase of the stress amplitude, applied to reach a number of cycles 1.2 × 10<sup>6</sup>, up to 115% compared to sandblasted specimens. Corrosive attack of the substrate steel was successfully avoided by using the coating systems. Stress- and microstructure-dependent corrosion fatigue damage mechanisms were evaluated by mechanical and electrochemical measurement techniques. |
| first_indexed | 2024-03-09T19:59:26Z |
| format | Article |
| id | doaj.art-d6c7a6e55d954513aa04ca099a70d647 |
| institution | Directory Open Access Journal |
| issn | 2624-5558 |
| language | English |
| last_indexed | 2024-03-09T19:59:26Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Corrosion and Materials Degradation |
| spelling | doaj.art-d6c7a6e55d954513aa04ca099a70d6472023-11-24T00:49:29ZengMDPI AGCorrosion and Materials Degradation2624-55582022-03-013112714110.3390/cmd3010007Corrosion Fatigue Behavior of Twin Wire Arc Sprayed and Machine Hammer Peened ZnAl4 Coatings on S355 J2C + C SubstrateMichael P. Milz0Andreas Wirtz1Mohamed Abdulgader2Anke Kalenborn3Dirk Biermann4Wolfgang Tillmann5Frank Walther6Chair of Materials Test Engineering (WPT), TU Dortmund University, Baroper Str. 303, 44227 Dortmund, GermanyInstitute of Machining Technology (ISF), TU Dortmund University, Baroper Str. 303, 44227 Dortmund, GermanyChair of Materials Engineering (LWT), TU Dortmund University, Leonhard-Euler-Str. 2, 44227 Dortmund, GermanyChair of Materials Test Engineering (WPT), TU Dortmund University, Baroper Str. 303, 44227 Dortmund, GermanyInstitute of Machining Technology (ISF), TU Dortmund University, Baroper Str. 303, 44227 Dortmund, GermanyChair of Materials Engineering (LWT), TU Dortmund University, Leonhard-Euler-Str. 2, 44227 Dortmund, GermanyChair of Materials Test Engineering (WPT), TU Dortmund University, Baroper Str. 303, 44227 Dortmund, GermanyOffshore installations, e.g., offshore wind turbines and pipelines, are exposed to various mechanical loads due to wind or waves and corrosive loads such as seawater or mist. ZnAl-based thermal sprayed coatings, often in conjunction with organic coatings, provide sufficient corrosion protection and are well established for applications in marine environments. In this study, machine hammer peening (MHP) is applied after twin wire arc spraying to improve corrosion fatigue behavior through increased hardness, reduced porosity, and roughness compared to as-sprayed coatings. Mn-alloyed structural steel S355 J2 + C with and without ZnAl4 coating as well as with MHP post-treated ZnAl4 coating were cyclically loaded in 3.5% NaCl solution. MHP leads to a uniform coating thickness with lower porosity and roughness. ZnAl4 coating and MHP post-treatment improved corrosion fatigue behavior in the high cycle fatigue regime with an increase of the stress amplitude, applied to reach a number of cycles 1.2 × 10<sup>6</sup>, up to 115% compared to sandblasted specimens. Corrosive attack of the substrate steel was successfully avoided by using the coating systems. Stress- and microstructure-dependent corrosion fatigue damage mechanisms were evaluated by mechanical and electrochemical measurement techniques.https://www.mdpi.com/2624-5558/3/1/7corrosion fatiguecorrosiontwin wire arc sprayingmachine hammer peeningZnAl4 coatingmarine application |
| spellingShingle | Michael P. Milz Andreas Wirtz Mohamed Abdulgader Anke Kalenborn Dirk Biermann Wolfgang Tillmann Frank Walther Corrosion Fatigue Behavior of Twin Wire Arc Sprayed and Machine Hammer Peened ZnAl4 Coatings on S355 J2C + C Substrate Corrosion and Materials Degradation corrosion fatigue corrosion twin wire arc spraying machine hammer peening ZnAl4 coating marine application |
| title | Corrosion Fatigue Behavior of Twin Wire Arc Sprayed and Machine Hammer Peened ZnAl4 Coatings on S355 J2C + C Substrate |
| title_full | Corrosion Fatigue Behavior of Twin Wire Arc Sprayed and Machine Hammer Peened ZnAl4 Coatings on S355 J2C + C Substrate |
| title_fullStr | Corrosion Fatigue Behavior of Twin Wire Arc Sprayed and Machine Hammer Peened ZnAl4 Coatings on S355 J2C + C Substrate |
| title_full_unstemmed | Corrosion Fatigue Behavior of Twin Wire Arc Sprayed and Machine Hammer Peened ZnAl4 Coatings on S355 J2C + C Substrate |
| title_short | Corrosion Fatigue Behavior of Twin Wire Arc Sprayed and Machine Hammer Peened ZnAl4 Coatings on S355 J2C + C Substrate |
| title_sort | corrosion fatigue behavior of twin wire arc sprayed and machine hammer peened znal4 coatings on s355 j2c c substrate |
| topic | corrosion fatigue corrosion twin wire arc spraying machine hammer peening ZnAl4 coating marine application |
| url | https://www.mdpi.com/2624-5558/3/1/7 |
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