Synthesis of Titanium Carbide Particle in Laser Melted-pool in situ
| Autor: | Lei Zhou, Yanhui Liu, Lingjie Zhu, Yongjiu Li, Shuaijun Dong |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Titanium carbide Metallurgy chemistry.chemical_element 02 engineering and technology engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology Microstructure 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Nickel Coating chemistry Phase (matter) engineering Particle General Materials Science Graphite 0210 nano-technology Eutectic system |
| Zdroj: | Journal of Wuhan University of Technology-Mater. Sci. Ed.. 34:1315-1320 |
| ISSN: | 1993-0437 1000-2413 |
| Popis: | The titanium carbide phase was synthesized in laser melted-pool in situ as the reinforced particles of nickel based composite coating on Ti-6Al-4V alloy surface using the nickel and graphite blending powder by laser cladding. The microstructure investigation showed that the petals-shaped particles and granular particles were two main morphology of titanium carbide particles. And a few spiral-shaped titanium carbide pattern and eutectic titanium carbide appeared on the cross-sections of the coating. The spiral-shaped titanium carbide pattern composed of some slender arc-shape titanium carbide particles and the eutectic titanium carbide was fine. The morphology and distribution of the spiral-shaped titanium carbide patterns and eutectic titanium carbide confrmed that their growth mechanism was the dissolution-precipitation mechanism and was affected by the convection behavior of the laser melted pool. The spiral-shaped titanium carbide pattern would precipitate out the high-temperature melts under high-speed convection. The eutectic titanium carbide would precipitate out when the melts stopped convection or dropped to eutectic temperature. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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