Research on Precipitation Phenomenon of TiC and TiAl₃ Particles in Aluminum Melt

Abstract:

The Al-TiC and Al-TiAl₃ master alloys were prepared by thermal explosion method of aluminum melt, and the precipitation phenomenon of TiC and TiAl₃ particles were studied in aluminum melt through separate addition of Al-TiC master alloy and composite addition of Al-TiC and Al-TiAl₃ master alloys into aluminum melt. The results show that: When TiC exists in the aluminum melt separately, its speed of sedimentation is fast, and after a shorter time of heat preservation, a large amount of TiC will precipitate; when TiC and TiAl₃ coexist in the aluminum melt, the speed of precipitation will become slow, and after a longer time of heat preservation, only a small amount of TiC will precipitate; and before TiAl₃ settles to the bottom of the sample, it will dissolve. The attenuation of the refining effect of Al-TiC and Al-TiAl₃ is mainly caused by the precipitation of TiC and the dissolution of TiAl₃.

• Periodical: Advanced Materials Research (Volumes 602-604)
• Pages: 612-615
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.602-604.612
• Online since: December 2012
• Authors: Wan Wu Ding, Wen Jun Zhao, Tian Dong Xia
• Keywords: Al-TiAl₃ Master Alloy, Al-TiC Master Alloy, Precipitation, TiAl₃, TiC

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