Effects of C content on the microstructure and properties of CoCrFeNiTi0.5Mo0.5Cx high-entropy alloy coatings by laser cladding
In order to deeply investigate the influence mechanism of different contents of non-metallic element C on the microstructure, microhardness, wear resistance and corrosion resistance of high-entropy alloy coatings. CoCrFeNiTi0.5Mo0.5Cx high-entropy alloy coating was prepared on the surface of AISI 10...
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Elsevier
2024-11-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S223878542402129X |
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| author | Tianxiang Lin Meiyan Feng Guofu Lian Hua Lu Changrong Chen Xu Huang |
| author_facet | Tianxiang Lin Meiyan Feng Guofu Lian Hua Lu Changrong Chen Xu Huang |
| author_sort | Tianxiang Lin |
| collection | DOAJ |
| description | In order to deeply investigate the influence mechanism of different contents of non-metallic element C on the microstructure, microhardness, wear resistance and corrosion resistance of high-entropy alloy coatings. CoCrFeNiTi0.5Mo0.5Cx high-entropy alloy coating was prepared on the surface of AISI 1045 steel by laser cladding technology. The results show that the microstructure of CoCrFeNiTi0.5Mo0.5 without C addition consists of FCC phase, BCC phase, intermetallic compound phase and σ-phase structure, and the carbide phases (M7C3 and TiC) start to appear after the addition of C element. The microhardness of the coating increases and then decreases with the increase of C content, and the average hardness is the highest when x = 0.03, 495.3HV0.5, which is 27.6% higher than that of C0. The abrasion resistance of the CoCrFeNiTi0.5Mo0.5Cx high-entropy alloy coatings is gradually increased and then decreased with the increase of C content, and the wear amount decreases from 0.0813 mm3 to 0.0514 mm3, and the main frictional wear mechanisms are adhesive wear, abrasive wear and oxidative wear. With the increase of C content, the corrosion resistance of the coating is gradually improved and then reduced, when the C content is 0.03, the highest corrosion potential is −0.818V, the lowest corrosion current is 1.382E-4 A/cm2, at this time, the passivation film on the surface of the coating is the most stable and dense, with the best corrosion resistance. The results of this paper provide a theoretical reference for the effect of adding non-metallic elements on the microstructure and properties of high-entropy alloy coatings. |
| format | Article |
| id | doaj-art-717def0ff82c4953b4e20d0046b2eecb |
| institution | OA Journals |
| issn | 2238-7854 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
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| series | Journal of Materials Research and Technology |
| spelling | doaj-art-717def0ff82c4953b4e20d0046b2eecb2025-08-20T02:35:33ZengElsevierJournal of Materials Research and Technology2238-78542024-11-01331540155710.1016/j.jmrt.2024.09.126Effects of C content on the microstructure and properties of CoCrFeNiTi0.5Mo0.5Cx high-entropy alloy coatings by laser claddingTianxiang Lin0Meiyan Feng1Guofu Lian2Hua Lu3Changrong Chen4Xu Huang5School of Mechanical and Automotive Engineering, Fujian University of Technology, Fuzhou, 350118, ChinaSchool of Mechanical and Automotive Engineering, Fujian University of Technology, Fuzhou, 350118, ChinaSchool of Mechanical and Automotive Engineering, Fujian University of Technology, Fuzhou, 350118, China; Corresponding author.School of Humanities, Fujian University of Technology, Fuzhou, 350118, ChinaSchool of Mechanical and Automotive Engineering, Fujian University of Technology, Fuzhou, 350118, ChinaSchool of Mechanical and Automotive Engineering, Fujian University of Technology, Fuzhou, 350118, ChinaIn order to deeply investigate the influence mechanism of different contents of non-metallic element C on the microstructure, microhardness, wear resistance and corrosion resistance of high-entropy alloy coatings. CoCrFeNiTi0.5Mo0.5Cx high-entropy alloy coating was prepared on the surface of AISI 1045 steel by laser cladding technology. The results show that the microstructure of CoCrFeNiTi0.5Mo0.5 without C addition consists of FCC phase, BCC phase, intermetallic compound phase and σ-phase structure, and the carbide phases (M7C3 and TiC) start to appear after the addition of C element. The microhardness of the coating increases and then decreases with the increase of C content, and the average hardness is the highest when x = 0.03, 495.3HV0.5, which is 27.6% higher than that of C0. The abrasion resistance of the CoCrFeNiTi0.5Mo0.5Cx high-entropy alloy coatings is gradually increased and then decreased with the increase of C content, and the wear amount decreases from 0.0813 mm3 to 0.0514 mm3, and the main frictional wear mechanisms are adhesive wear, abrasive wear and oxidative wear. With the increase of C content, the corrosion resistance of the coating is gradually improved and then reduced, when the C content is 0.03, the highest corrosion potential is −0.818V, the lowest corrosion current is 1.382E-4 A/cm2, at this time, the passivation film on the surface of the coating is the most stable and dense, with the best corrosion resistance. The results of this paper provide a theoretical reference for the effect of adding non-metallic elements on the microstructure and properties of high-entropy alloy coatings.http://www.sciencedirect.com/science/article/pii/S223878542402129XLaser claddingHigh-entropy alloysMicrostructureMicrohardnessWear resistanceCorrosion resistance |
| spellingShingle | Tianxiang Lin Meiyan Feng Guofu Lian Hua Lu Changrong Chen Xu Huang Effects of C content on the microstructure and properties of CoCrFeNiTi0.5Mo0.5Cx high-entropy alloy coatings by laser cladding Journal of Materials Research and Technology Laser cladding High-entropy alloys Microstructure Microhardness Wear resistance Corrosion resistance |
| title | Effects of C content on the microstructure and properties of CoCrFeNiTi0.5Mo0.5Cx high-entropy alloy coatings by laser cladding |
| title_full | Effects of C content on the microstructure and properties of CoCrFeNiTi0.5Mo0.5Cx high-entropy alloy coatings by laser cladding |
| title_fullStr | Effects of C content on the microstructure and properties of CoCrFeNiTi0.5Mo0.5Cx high-entropy alloy coatings by laser cladding |
| title_full_unstemmed | Effects of C content on the microstructure and properties of CoCrFeNiTi0.5Mo0.5Cx high-entropy alloy coatings by laser cladding |
| title_short | Effects of C content on the microstructure and properties of CoCrFeNiTi0.5Mo0.5Cx high-entropy alloy coatings by laser cladding |
| title_sort | effects of c content on the microstructure and properties of cocrfeniti0 5mo0 5cx high entropy alloy coatings by laser cladding |
| topic | Laser cladding High-entropy alloys Microstructure Microhardness Wear resistance Corrosion resistance |
| url | http://www.sciencedirect.com/science/article/pii/S223878542402129X |
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