Preparation of QTi4. 3–4 graghite composite by semi-solid casting technology

Abstract

The electromagnetic-mechanical stirring technology was employed for preparing QTi4. 3–4 graghite composite slury, and QTi4. 3–4 graghite composite with uniform distribution of graphite particles was prepared using the semi-solid casting technology successfully. The structure of this QTi4. 3–4 graghite composite was studied and the condition for uniform distribution of graphite particles was got. The experimental results show that there exists a linear relationship between the solid fraction and the stirring temperature of QTi4. 3–4 graphite slurry. With the decreasing of stirring temperature, the solid fraction of QTi4. 3–4 graghite slurry increases constantly. In casting, with the increasing of solid fraction of QTi4. 3–4 graghite slurry, the agglomeration of graphite particles is removed gradually. When the solid fraction is higher than 40%, graphite particles can distribute evenly in QTi4. 3–4 graghite composite.

Keywords

semi-solid casting technology / distribution of graphite particles / solid fraction

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