Interfacial microstructure and nucleating mechanism of melt-spun CeB 6 /Al composite inoculant
| Autor: | Xin Wang, Shuiqing Liu, Chunxiang Cui, Hengli Chen, Chong Han, Jiejie Shi |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Scanning electron microscope Alloy General Physics and Astronomy 02 engineering and technology engineering.material 01 natural sciences chemistry.chemical_compound 0103 physical sciences Cerium hexaboride Composite material 010302 applied physics Metallurgy Surfaces and Interfaces General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure Grain size Surfaces Coatings and Films chemistry Transmission electron microscopy engineering Particle Melt spinning 0210 nano-technology |
| Zdroj: | Applied Surface Science. 431:202-206 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2017.02.267 |
| Popis: | The microstructure of the CeB6/Al interface in an Al-Ce-B alloy prepared by melt-spinning was investigated by scanning electron microscope (SEM) and transmission electron microscopy (TEM). The in situ synthetic CeB6 particle in Al melt generally shows cubic morphology in which the naked surface is (220) plane. After adding in Al melt during inoculation, a well-bonded interface was formed between the CeB6 particle and the Al crystalline matrix. The experimental observation on the degree of mismatch between Al (220) plane and CeB6 (220) plane was highly accorded with the theoretic calculated value. It was suggested that the surface of CeB6 particle is the potential nucleant substrate of Al crystal. As a result, the grain size of aluminum was significantly decreased by addition of CeB6/Al inoculant ribbons with a very small ratio of 0.3% in weight. |
| Databáze: | OpenAIRE |
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