Transformation from Al₃BC phase to doped TiB₂ or TiC particles in Al-Ti melts

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• 作者：Wenjie Tian ; Pengting Li ; Tong Gao ; Jinfeng Nie ; Xiangfa Liu ; ^{xfliu@sdu.edu.cn}
• 关键词：Al3BC ; Transformation ; Macroporous ; Doped ; Refinement
• 刊名：Journal of Alloys and Compounds
• 出版年：2013
• 出版时间：5 June, 2013
• 年：2013
• 卷：561
• 期：Complete
• 页码：48-53
• 全文大小：2658 K

文摘

An Al-8B-2C master alloy was added into Al-Ti melts to study the reaction of Al₃BC phase with Ti. As a result, a new Al-5Ti-0.8B-0.2C master alloy was fabricated. The microstructures were studied by field emission scanning electron microscope (FESEM), X-ray diffraction (XRD) and transmission electron microscope (TEM). The analysis indicates that C-doped TiB₂ and B-doped TiC which show macroporous and lamellar morphologies are transformed from Al₃BC. The transformation mechanism is also discussed in this work. Furthermore, the grain refinement performance of the Al-5Ti-0.8B-0.2C on A356 alloy was investigated.