Fatigue Behavior of an AM50 Die-Casting Alloy Anodized by Plasma Electrolytic Oxidation
While an anodizing process is essential for magnesium alloys to be used under corrosive environments, it sometimes stimulates a fatigue fracture that initiates at the interface between the coating layer and the substrate. In this study, a plasma electrolyte oxidation (PEO) technique was employed to...
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MDPI AG
2021-12-01
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| Online Access: | https://www.mdpi.com/1996-1944/14/24/7795 |
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| author | Kwangmin Choi Seungwon Kang Heon Kang |
| author_facet | Kwangmin Choi Seungwon Kang Heon Kang |
| author_sort | Kwangmin Choi |
| collection | DOAJ |
| description | While an anodizing process is essential for magnesium alloys to be used under corrosive environments, it sometimes stimulates a fatigue fracture that initiates at the interface between the coating layer and the substrate. In this study, a plasma electrolyte oxidation (PEO) technique was employed to provide excellent adhesion between the anodizing layer and the AM50 die-cast by applying an extremely high dielectric discharge in an alkaline phosphate electrolyte, and its effect on corrosion and fatigue behaviors was investigated. The stress intensity factor at the fatigue limit was estimated to be 0.28 MPam<sup>0.5</sup>. The specimen anodized using the PEO technique exhibits enhanced strength and corrosion resistance compared to the unanodized counterpart. Furthermore, it shows a relative fatigue life in spite of the thick anodizing layer because the crack initiates from the interface, not from the pore near the interface. |
| first_indexed | 2024-03-10T03:38:49Z |
| format | Article |
| id | doaj.art-238759baefd741b39eeb5a46b6813a0a |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T03:38:49Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-238759baefd741b39eeb5a46b6813a0a2023-11-23T09:23:11ZengMDPI AGMaterials1996-19442021-12-011424779510.3390/ma14247795Fatigue Behavior of an AM50 Die-Casting Alloy Anodized by Plasma Electrolytic OxidationKwangmin Choi0Seungwon Kang1Heon Kang2Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, KoreaTitanium Department, Korea Institute of Materials Science, 797 Changwon-daero, Seongsan-gu, Changwon-si 51508, KoreaSchool of Advanced Materials Engineering, Kookmin University, 77 Jeongneung-ro, Seongbuk-gu, Seoul 02707, KoreaWhile an anodizing process is essential for magnesium alloys to be used under corrosive environments, it sometimes stimulates a fatigue fracture that initiates at the interface between the coating layer and the substrate. In this study, a plasma electrolyte oxidation (PEO) technique was employed to provide excellent adhesion between the anodizing layer and the AM50 die-cast by applying an extremely high dielectric discharge in an alkaline phosphate electrolyte, and its effect on corrosion and fatigue behaviors was investigated. The stress intensity factor at the fatigue limit was estimated to be 0.28 MPam<sup>0.5</sup>. The specimen anodized using the PEO technique exhibits enhanced strength and corrosion resistance compared to the unanodized counterpart. Furthermore, it shows a relative fatigue life in spite of the thick anodizing layer because the crack initiates from the interface, not from the pore near the interface.https://www.mdpi.com/1996-1944/14/24/7795magnesium alloydie-castingfatigue propertiesAM50corrosion properties |
| spellingShingle | Kwangmin Choi Seungwon Kang Heon Kang Fatigue Behavior of an AM50 Die-Casting Alloy Anodized by Plasma Electrolytic Oxidation Materials magnesium alloy die-casting fatigue properties AM50 corrosion properties |
| title | Fatigue Behavior of an AM50 Die-Casting Alloy Anodized by Plasma Electrolytic Oxidation |
| title_full | Fatigue Behavior of an AM50 Die-Casting Alloy Anodized by Plasma Electrolytic Oxidation |
| title_fullStr | Fatigue Behavior of an AM50 Die-Casting Alloy Anodized by Plasma Electrolytic Oxidation |
| title_full_unstemmed | Fatigue Behavior of an AM50 Die-Casting Alloy Anodized by Plasma Electrolytic Oxidation |
| title_short | Fatigue Behavior of an AM50 Die-Casting Alloy Anodized by Plasma Electrolytic Oxidation |
| title_sort | fatigue behavior of an am50 die casting alloy anodized by plasma electrolytic oxidation |
| topic | magnesium alloy die-casting fatigue properties AM50 corrosion properties |
| url | https://www.mdpi.com/1996-1944/14/24/7795 |
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