Effect of Al-TiO<sub>2</sub>-C Grain Refiners on Refinement of Industrial Pure Aluminum

HAN Xiao-wei; ZHANG Rui-ying; WANG Peng

doi:10.11868/j.issn.1001-4381.2015.000521

Cailiao gongcheng (Oct 2017)

Effect of Al-TiO<sub>2</sub>-C Grain Refiners on Refinement of Industrial Pure Aluminum

HAN Xiao-wei,
ZHANG Rui-ying,
WANG Peng

Affiliations

HAN Xiao-wei: School of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot 010051, China
ZHANG Rui-ying: School of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot 010051, China
WANG Peng: School of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot 010051, China

DOI: https://doi.org/10.11868/j.issn.1001-4381.2015.000521
Journal volume & issue: Vol. 45, no. 10
pp. 65 – 70

Abstract

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The Al-TiO2-C grain refiners were synthesized by the in-situ exothermic dispersion method by using TiO2,C and Al powders as raw materials. The microstructure of Al-TiO2-C refiners with different C/TiO2 was investigated by SEM, XRD and EDS. Grain refining test was carried out on industrial pure aluminum. The results show that Al-TiO2-C refiners are composed of Al3Ti,TiC and Al2O3. When the mole ratio of C to TiO2 is between 1:25 and 1:20, the amount of Al2O3 is moderate and its distribution is relatively dispersive. An excellent grain refining performance is obtained when adding 0.2% (mass fraction) Al-TiO2-C refiner with C/TiO2 is 1:20, the average grain size is about 142μm and there is no refining recession when holding 1h.

Published in Cailiao gongcheng

ISSN: 1001-4381 (Print)
Publisher: Journal of Materials Engineering
Country of publisher: China
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: http://jme.biam.ac.cn/CN/1001-4381/home.shtml

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