Abstract
In order to fabricate a thin-walled high-temperature titanium alloy component, the mold filling capacity of 600°C high-temperature titanium alloy was investigated by a mesh pattern. The results indicate that 600°C high-temperature titanium alloys present poorer mold filling capacity than Ti6Al4V alloy. The effect of different primary coating materials (Y2O3, ZrO2, and Al2O3) and mold preheating temperature on mold filling capacity were also evaluated. It is found that the Y2O3 primary coating presents the best mold filling capacity. The mold filling capacity does not continuously increase with increasing mold preheating temperature due to the influence of interfacial reaction. The proper mold temperature for 600°C high-temperature titanium alloy investment casting is about 300°C. A thin-walled high-temperature titanium alloy component was fabricated successfully.
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