Microstructure and Wear Behavior of Laser Cladded CoCrNiMox Coatings on the Low Carbon Steel
In this study, CoCrNiMo<i>x</i> (<i>x</i> = 0, 1, 3 and 5, wt.%) alloy coatings were fabricated on the surface of low carbon steel by laser surface cladding. The scanning electron microscope (SEM), energy dispersive spectrometer (EDS), and X-ray diffraction (XRD) were used to...
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| Format: | Article |
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MDPI AG
2022-08-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/12/9/1229 |
| _version_ | 1827662060864929792 |
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| author | Ran Liu Xianting Dang Yating Peng Tao Wu |
| author_facet | Ran Liu Xianting Dang Yating Peng Tao Wu |
| author_sort | Ran Liu |
| collection | DOAJ |
| description | In this study, CoCrNiMo<i>x</i> (<i>x</i> = 0, 1, 3 and 5, wt.%) alloy coatings were fabricated on the surface of low carbon steel by laser surface cladding. The scanning electron microscope (SEM), energy dispersive spectrometer (EDS), and X-ray diffraction (XRD) were used to analyze the microstructure and phases of the prepared coatings. The microhardness and wear resistance of these coating were also evaluated. The results showeded that a single-phase face-centered cubic (FCC) structure generated by the CoCrNi ternary compound in all the coatings, the σ phase, and the Mu (μ) phase, enriched with Cr and Mo and originated with additional Mo, exhibited a lamellar structure. The content of FCC single-phase structure in the coating gradually decreases with the increasing of Mo because the addition of Mo can promote the precipitation of the σ phase and the μ phase. Among all the laser cladded coatings, the CoCrNiMo<sub>5</sub> alloy coating shows the best properties, owing to the higher proportion of intermetallic compounds in the σ phase and the μ phase, which can provide enhanced performance. This exhibited the narrowest wear scar width and showed the fatigue wear mechanism. |
| first_indexed | 2024-03-10T00:20:52Z |
| format | Article |
| id | doaj.art-6ddc66c13fc3471a96696c12ab65ed13 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-10T00:20:52Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-6ddc66c13fc3471a96696c12ab65ed132023-11-23T15:43:35ZengMDPI AGCrystals2073-43522022-08-01129122910.3390/cryst12091229Microstructure and Wear Behavior of Laser Cladded CoCrNiMox Coatings on the Low Carbon SteelRan Liu0Xianting Dang1Yating Peng2Tao Wu3School of Mechanical and Materials Engineering, North China University of Technology, 5 Jinyuanzhuang Road, Beijing 100144, ChinaSchool of Mechanical and Materials Engineering, North China University of Technology, 5 Jinyuanzhuang Road, Beijing 100144, ChinaSchool of Mechanical and Materials Engineering, North China University of Technology, 5 Jinyuanzhuang Road, Beijing 100144, ChinaZhejiang Institute of Mechanical & Electrical Engineering, 528 Binwen Road, Hangzhou 310053, ChinaIn this study, CoCrNiMo<i>x</i> (<i>x</i> = 0, 1, 3 and 5, wt.%) alloy coatings were fabricated on the surface of low carbon steel by laser surface cladding. The scanning electron microscope (SEM), energy dispersive spectrometer (EDS), and X-ray diffraction (XRD) were used to analyze the microstructure and phases of the prepared coatings. The microhardness and wear resistance of these coating were also evaluated. The results showeded that a single-phase face-centered cubic (FCC) structure generated by the CoCrNi ternary compound in all the coatings, the σ phase, and the Mu (μ) phase, enriched with Cr and Mo and originated with additional Mo, exhibited a lamellar structure. The content of FCC single-phase structure in the coating gradually decreases with the increasing of Mo because the addition of Mo can promote the precipitation of the σ phase and the μ phase. Among all the laser cladded coatings, the CoCrNiMo<sub>5</sub> alloy coating shows the best properties, owing to the higher proportion of intermetallic compounds in the σ phase and the μ phase, which can provide enhanced performance. This exhibited the narrowest wear scar width and showed the fatigue wear mechanism.https://www.mdpi.com/2073-4352/12/9/1229laser claddingCoCrNi alloymicrostructurewear resistance |
| spellingShingle | Ran Liu Xianting Dang Yating Peng Tao Wu Microstructure and Wear Behavior of Laser Cladded CoCrNiMox Coatings on the Low Carbon Steel Crystals laser cladding CoCrNi alloy microstructure wear resistance |
| title | Microstructure and Wear Behavior of Laser Cladded CoCrNiMox Coatings on the Low Carbon Steel |
| title_full | Microstructure and Wear Behavior of Laser Cladded CoCrNiMox Coatings on the Low Carbon Steel |
| title_fullStr | Microstructure and Wear Behavior of Laser Cladded CoCrNiMox Coatings on the Low Carbon Steel |
| title_full_unstemmed | Microstructure and Wear Behavior of Laser Cladded CoCrNiMox Coatings on the Low Carbon Steel |
| title_short | Microstructure and Wear Behavior of Laser Cladded CoCrNiMox Coatings on the Low Carbon Steel |
| title_sort | microstructure and wear behavior of laser cladded cocrnimox coatings on the low carbon steel |
| topic | laser cladding CoCrNi alloy microstructure wear resistance |
| url | https://www.mdpi.com/2073-4352/12/9/1229 |
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