Improvement of interfacial compatibility of SiCf/Ti-6Al-4V composites by applying fiber coating and heat treatment
A new approach to improving the interfacial compatibility of SiCf/Ti-6Al-4V composites by using fiber coating coupled with subsequent heat treatment was presented. The SiCf/Ti-6Al-4V composites with C-coated and C/Mo-coated fibers were prepared using the foil-fiber-foil method and subsequently heat...
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| Format: | Article |
| Language: | English |
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Elsevier
2021-11-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127521005979 |
| _version_ | 1819121918747344896 |
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| author | Guanghai Feng Yanqing Yang |
| author_facet | Guanghai Feng Yanqing Yang |
| author_sort | Guanghai Feng |
| collection | DOAJ |
| description | A new approach to improving the interfacial compatibility of SiCf/Ti-6Al-4V composites by using fiber coating coupled with subsequent heat treatment was presented. The SiCf/Ti-6Al-4V composites with C-coated and C/Mo-coated fibers were prepared using the foil-fiber-foil method and subsequently heat treated in vacuum at 750 °C to obtain several kinds of the SiCf/Ti-6Al-4V composites with different interfacial characteristics. Interfacial microstructures of these composites were systematically characterized by means of scanning electron microscopy and X-ray energy dispersive spectroscopy to investigate the interfacial microstructure evolution and reaction dynamics. The effects of interfacial microstructures on interfacial mechanical properties were also investigated using thin-slice fiber push-out tests. The results show that the brittle interfacial reaction layer of TiC in the C-coated SiCf/Ti-6Al-4V composites was obviously thickened and some microvoids even formed near the matrix with increasing heat treatment durations, whereas the matrix adjacent to Mo coating in the C/Mo-coated SiCf/Ti-6Al-4V composites gradually transformed into a ductile β-Ti layer. Interfacial shear strengths of the C/Mo-coated composites were slightly increased with increasing the heat treatment time, while those of the C-coated composites were remarkably improved. Critical issues on modifying interfacial compatibility of the SiCf/Ti composites for further improving the mechanical behavior of the composites were discussed. |
| first_indexed | 2024-12-22T06:44:12Z |
| format | Article |
| id | doaj.art-3f4b811a07c1489f9eb00eefd838bddd |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-12-22T06:44:12Z |
| publishDate | 2021-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-3f4b811a07c1489f9eb00eefd838bddd2022-12-21T18:35:20ZengElsevierMaterials & Design0264-12752021-11-01210110042Improvement of interfacial compatibility of SiCf/Ti-6Al-4V composites by applying fiber coating and heat treatmentGuanghai Feng0Yanqing Yang1School of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an 710075, PR China; Corresponding author.State Key Lab of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, PR ChinaA new approach to improving the interfacial compatibility of SiCf/Ti-6Al-4V composites by using fiber coating coupled with subsequent heat treatment was presented. The SiCf/Ti-6Al-4V composites with C-coated and C/Mo-coated fibers were prepared using the foil-fiber-foil method and subsequently heat treated in vacuum at 750 °C to obtain several kinds of the SiCf/Ti-6Al-4V composites with different interfacial characteristics. Interfacial microstructures of these composites were systematically characterized by means of scanning electron microscopy and X-ray energy dispersive spectroscopy to investigate the interfacial microstructure evolution and reaction dynamics. The effects of interfacial microstructures on interfacial mechanical properties were also investigated using thin-slice fiber push-out tests. The results show that the brittle interfacial reaction layer of TiC in the C-coated SiCf/Ti-6Al-4V composites was obviously thickened and some microvoids even formed near the matrix with increasing heat treatment durations, whereas the matrix adjacent to Mo coating in the C/Mo-coated SiCf/Ti-6Al-4V composites gradually transformed into a ductile β-Ti layer. Interfacial shear strengths of the C/Mo-coated composites were slightly increased with increasing the heat treatment time, while those of the C-coated composites were remarkably improved. Critical issues on modifying interfacial compatibility of the SiCf/Ti composites for further improving the mechanical behavior of the composites were discussed.http://www.sciencedirect.com/science/article/pii/S0264127521005979Titanium matrix compositesSiC fiberFiber coatingInterfacial characteristicsInterfacial compatibility |
| spellingShingle | Guanghai Feng Yanqing Yang Improvement of interfacial compatibility of SiCf/Ti-6Al-4V composites by applying fiber coating and heat treatment Materials & Design Titanium matrix composites SiC fiber Fiber coating Interfacial characteristics Interfacial compatibility |
| title | Improvement of interfacial compatibility of SiCf/Ti-6Al-4V composites by applying fiber coating and heat treatment |
| title_full | Improvement of interfacial compatibility of SiCf/Ti-6Al-4V composites by applying fiber coating and heat treatment |
| title_fullStr | Improvement of interfacial compatibility of SiCf/Ti-6Al-4V composites by applying fiber coating and heat treatment |
| title_full_unstemmed | Improvement of interfacial compatibility of SiCf/Ti-6Al-4V composites by applying fiber coating and heat treatment |
| title_short | Improvement of interfacial compatibility of SiCf/Ti-6Al-4V composites by applying fiber coating and heat treatment |
| title_sort | improvement of interfacial compatibility of sicf ti 6al 4v composites by applying fiber coating and heat treatment |
| topic | Titanium matrix composites SiC fiber Fiber coating Interfacial characteristics Interfacial compatibility |
| url | http://www.sciencedirect.com/science/article/pii/S0264127521005979 |
| work_keys_str_mv | AT guanghaifeng improvementofinterfacialcompatibilityofsicfti6al4vcompositesbyapplyingfibercoatingandheattreatment AT yanqingyang improvementofinterfacialcompatibilityofsicfti6al4vcompositesbyapplyingfibercoatingandheattreatment |