Temperature Effect of Refining Performance by Al-Ti-B (C) Master Alloys

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Refining performance and mechanism of Al-5Ti-1B and Al-5Ti-0.4C master alloys at different temperature were investigated in this paper. The experimental results show that the refining effect of Al-5Ti-0.4C master alloy becomes worse as temperature increasing from 750°C to 1200°C, The refining effect of Al-5Ti-1B master alloy becomes worse as temperature increasing from 750°C to 1000°C. However, when the temperature is above 1000°C, the refining effect of Al-5Ti-1B master alloy recovers gradually as temperature increasing. TiB2 particles with TiAl3 layers are the heterogeneous nucleating cores of α-Al at low temperature. However, TiB2 particles are the heterogeneous nuclei of α-Al at high temperature.

Info:

Periodical:

Advanced Materials Research (Volumes 306-307)

Edited by:

Shiquan Liu and Min Zuo

Pages:

475-480

DOI:

10.4028/www.scientific.net/AMR.306-307.475

Citation:

C. J. Gao et al., "Temperature Effect of Refining Performance by Al-Ti-B (C) Master Alloys", Advanced Materials Research, Vols. 306-307, pp. 475-480, 2011

Online since:

August 2011

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Price:

$35.00

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