Investigating Microstructural Evolution and Its Influence on Tribological Behaviors of In-Situ Formed VCp Reinforced Iron-Based Composites with Variable Mn Content
In this work, we fabricated VCp-reinforced iron-based composites (VCFCs) by adjusting the amount of Mn elements and investigated how the concentration of Mn affected the microstructural characteristics of Vanadium carbide (VC) and the texture of the iron matrix, and the influence of microstructure o...
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MDPI AG
2022-11-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/22/8158 |
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| author | Pinghu Chen Wenguang Zhao Zhen Liu Yun Zhang Caifeng Weng Ruiqing Li Yong Chen |
| author_facet | Pinghu Chen Wenguang Zhao Zhen Liu Yun Zhang Caifeng Weng Ruiqing Li Yong Chen |
| author_sort | Pinghu Chen |
| collection | DOAJ |
| description | In this work, we fabricated VCp-reinforced iron-based composites (VCFCs) by adjusting the amount of Mn elements and investigated how the concentration of Mn affected the microstructural characteristics of Vanadium carbide (VC) and the texture of the iron matrix, and the influence of microstructure on tribological behaviors should be investigated. We demonstrated that VC changed from thick dendrite crystals (~50 μm) to tiny equiaxed crystals (~5 μm). Furthermore, the nucleation mechanism of VC also transformed from homogeneous nucleation to heterogeneous nucleation due to the lower Gibbs free energy of TiC and the tailoring effect of the Mn elements. In addition, γ-Fe in the FCC structure gradually increased and ascribed an increase of Mn content to the lower transformation temperature of martensite. Furtherly, particulate features and phase constitution could contribute to hardness and wear resistance. Higher hardness and excellent wear resistance occurred in the 3.0 Mn sample, which had a hardness of 869 HV and a wear rate of 1.77 × 10<sup>−6</sup> mm<sup>3</sup>/(N·m). In addition, the adhesive wear could be the main wear mechanism in the 3.0 Mn sample, while the abrasive wear could be in the 4.5 Mn sample. |
| first_indexed | 2024-03-09T18:11:42Z |
| format | Article |
| id | doaj.art-4ebb137fe9384a6b8ede577dbb3929c6 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T18:11:42Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-4ebb137fe9384a6b8ede577dbb3929c62023-11-24T09:05:09ZengMDPI AGMaterials1996-19442022-11-011522815810.3390/ma15228158Investigating Microstructural Evolution and Its Influence on Tribological Behaviors of In-Situ Formed VCp Reinforced Iron-Based Composites with Variable Mn ContentPinghu Chen0Wenguang Zhao1Zhen Liu2Yun Zhang3Caifeng Weng4Ruiqing Li5Yong Chen6College of Mechatronics & Control Engineering, Shenzhen University, Shenzhen 518060, ChinaSchool of Advanced Materials, Peking University Shenzhen Graduate School, Shenzhen 518055, ChinaCollege of Mechatronics & Control Engineering, Shenzhen University, Shenzhen 518060, ChinaSchool of Mechanical Engineering, Hunan University of Science and Technology, Xiangtan 411201, ChinaSchool of Advanced Materials, Peking University Shenzhen Graduate School, Shenzhen 518055, ChinaState Key Laboratory of High Performance Complex Manufacturing, Light Alloys Research Institute, Central South University, Changsha 410083, ChinaCollege of Mechanical Engineering, University of South China, Hengyang 421001, ChinaIn this work, we fabricated VCp-reinforced iron-based composites (VCFCs) by adjusting the amount of Mn elements and investigated how the concentration of Mn affected the microstructural characteristics of Vanadium carbide (VC) and the texture of the iron matrix, and the influence of microstructure on tribological behaviors should be investigated. We demonstrated that VC changed from thick dendrite crystals (~50 μm) to tiny equiaxed crystals (~5 μm). Furthermore, the nucleation mechanism of VC also transformed from homogeneous nucleation to heterogeneous nucleation due to the lower Gibbs free energy of TiC and the tailoring effect of the Mn elements. In addition, γ-Fe in the FCC structure gradually increased and ascribed an increase of Mn content to the lower transformation temperature of martensite. Furtherly, particulate features and phase constitution could contribute to hardness and wear resistance. Higher hardness and excellent wear resistance occurred in the 3.0 Mn sample, which had a hardness of 869 HV and a wear rate of 1.77 × 10<sup>−6</sup> mm<sup>3</sup>/(N·m). In addition, the adhesive wear could be the main wear mechanism in the 3.0 Mn sample, while the abrasive wear could be in the 4.5 Mn sample.https://www.mdpi.com/1996-1944/15/22/8158vanadium carbideiron-based compositesmicrostructural evolutionhardnesstribological behaviors |
| spellingShingle | Pinghu Chen Wenguang Zhao Zhen Liu Yun Zhang Caifeng Weng Ruiqing Li Yong Chen Investigating Microstructural Evolution and Its Influence on Tribological Behaviors of In-Situ Formed VCp Reinforced Iron-Based Composites with Variable Mn Content Materials vanadium carbide iron-based composites microstructural evolution hardness tribological behaviors |
| title | Investigating Microstructural Evolution and Its Influence on Tribological Behaviors of In-Situ Formed VCp Reinforced Iron-Based Composites with Variable Mn Content |
| title_full | Investigating Microstructural Evolution and Its Influence on Tribological Behaviors of In-Situ Formed VCp Reinforced Iron-Based Composites with Variable Mn Content |
| title_fullStr | Investigating Microstructural Evolution and Its Influence on Tribological Behaviors of In-Situ Formed VCp Reinforced Iron-Based Composites with Variable Mn Content |
| title_full_unstemmed | Investigating Microstructural Evolution and Its Influence on Tribological Behaviors of In-Situ Formed VCp Reinforced Iron-Based Composites with Variable Mn Content |
| title_short | Investigating Microstructural Evolution and Its Influence on Tribological Behaviors of In-Situ Formed VCp Reinforced Iron-Based Composites with Variable Mn Content |
| title_sort | investigating microstructural evolution and its influence on tribological behaviors of in situ formed vcp reinforced iron based composites with variable mn content |
| topic | vanadium carbide iron-based composites microstructural evolution hardness tribological behaviors |
| url | https://www.mdpi.com/1996-1944/15/22/8158 |
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