Phase constituents and microstructure of laser cladding Al2O3/Ti3Al reinforced ceramic layer on titanium alloy |
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| Authors: | Jianing LiChuanzhong Chen Zhaoqing LinTiziano Squartini |
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| Affiliation: | a Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Department of Materials Science, Shandong University, Jing Shi Road # 17923, Jinan 250061, Shandong, China
b INFM - Department of Physics, Siena University, Siena 53100, Italy |
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| Abstract: | Laser cladding of the Fe3Al + TiB2/Al2O3 pre-placed alloy powder on Ti-6Al-4V alloy can form the Ti3Al/Fe3Al + TiB2/Al2O3 ceramic layer, which can greatly increase wear resistance of titanium alloy. In this study, the Ti3Al/Fe3Al + TiB2/Al2O3 ceramic layer has been researched by means of electron probe, X-ray diffraction, scanning electron microscope and micro-analyzer. In cladding process, Al2O3 can react with TiB2 leading to formation of amount of Ti3Al and B. This principle can be used to improve the Fe3Al + TiB2 laser cladded coating, it was found that with addition of Al2O3, the microstructure performance and micro-hardness of the coating was obviously improved due to the action of the Al-Ti-B system and hard phases. |
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| Keywords: | Ceramics Coating materials Intermetallics X-ray diffraction |
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