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首页> 外文期刊>Journal of Materials Science >DUCTILE AND STRONG ALUMINIUM-MATRIX TITANIUM ALUMINIDE COMPOSITE FORMED IN SITU FROM ALUMINIUM, TITANIUM DIOXIDE AND SODIUM HEXAFLUOROALUMINATE
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DUCTILE AND STRONG ALUMINIUM-MATRIX TITANIUM ALUMINIDE COMPOSITE FORMED IN SITU FROM ALUMINIUM, TITANIUM DIOXIDE AND SODIUM HEXAFLUOROALUMINATE

机译：原位由铝，二氧化钛和六氟铝酸钠制成的韧性和强铝基铝钛复合材料

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摘要

An aluminium-matrix TiAl3-particle (1-2 mu m) composite exhibiting high tensile ductility (22%), high tensile strength (235 MPa) and a grain size of 50 mu m was made by a new in situ method involving reactions between Al, TiO2 and Na3AlF6, which were subjected to stir casting at 900 degrees C. The strength and ductility were higher than those of an aluminium-matrix TiAl3-particle Al2O3-particle composite made in situ by reacting Al with TiO2 (without Na3AlF6). This is due to the ability of Na3AlF6 to enhance the reduction of TiO2 and Al2O3, thus resulting in more TiAl3 and a smaller grain size. [References: 11]
机译：通过一种新的原位法制备铝基TiAl3颗粒（1-2μm）复合材料，该复合材料具有高拉伸延展性（22％），高拉伸强度（235 MPa）和50μm晶粒度Al，TiO2和Na3AlF6在900摄氏度下进行了搅拌铸造。其强度和延展性高于通过使Al与TiO2（不含Na3AlF6）反应原位制备的铝基TiAl3颗粒Al2O3颗粒复合材料。这是由于Na3AlF6增强TiO2和Al2O3还原的能力，从而导致更多的TiAl3和更小的晶粒尺寸。 [参考：11]

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