Directional solidification of Fe-Al-Ta eutectic by electron beam floating zone melting
| Autor: | Chiqiang Ren, Chunjuan Cui, Liu Yanyun, Songyuan Wang, Haijun Su |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Zone melting
Materials science Mechanical Engineering Metals and Alloys Crystal growth 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Microstructure 01 natural sciences 0104 chemical sciences Wavelength Temperature gradient Mechanics of Materials Materials Chemistry Cathode ray Composite material 0210 nano-technology Directional solidification Eutectic system |
| Zdroj: | Journal of Alloys and Compounds. 785:62-71 |
| ISSN: | 0925-8388 |
| Popis: | Fe-Al-Ta eutectic composites have been paid more attentions for high temperature application. Nevertheless, still there is a lack of research on microstructural characteristics and crystal growth mechanism of this eutectic obtained by high temperature gradient directional solidification technique. As such, Fe-Al-Ta eutectic composites were prepared by high temperature gradient electron beam floating zone melting technique in the present paper. Microstructures, solid/liquid interface morphologies and preferential orientations of the Fe-Al-Ta eutectic composites at different solidification rates were studied. Moreover, effect of interface perturbation wavelength on stability of the solid/liquid interface was calculated according to M-S theory and Kurz-Fisher model, respectively. These are consistent with the experimental results well. |
| Databáze: | OpenAIRE |
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