| 研究実績の概要 |
Iron aluminide (Fe3Al) was successfully optimized and manufactured by additive manufacturing (AM) technology. A correlation between laser power, scanning speed and microstructure was found. Therefore, microstructure was deeply analyzed, as well as its mechanical properties (e.g. hardness). Microstructural features and mechanical properties of additively manufactured Fe3Al were compared with the same material obtained by conventional technologies, e.g. powder sintering. Thus, Fe3Al was optimized by Hot-Pressing (HP) conventional technique.
In parallel, a review of additively manufactured iron aluminides has been written and is pending for submission. Additionally, a contribution on a chapter of a book regarding AM technologies has been accepted for publication: 'Structural integrity I: static mechanical properties' in 'Fundamentals of Laser Powder Bed Fusion of Metals'.
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| 今後の研究の推進方策 |
Next step of the project comes with the optimization of Fe3Al/TiC cermet. Cermet powder will be prepared by drum tumbler mixer. The goals are to clarify the relationship between the laser heating conditions, as well as to analyze its microstructure and mechanical properties.
Density measurements will be carried out by cross section analyses and Archimedes method. The correlation between laser parameters and density of the printed parts will be evaluated. Microstructural analyses will be performed on the optimal condition, by means of SEM-EDS, EBSD and XRD. TEM analyses may be considered. Mechanical properties will be evaluated and compared to AM Fe3Al material. Additionally, HP method will be used to manufacture same material, as reference, from a microstructural and mechanical point of view.
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