Effect of cooling rate on the microstructure of AI-5.17Cu-2.63Si cast alloy
The effect of cooling rate on the solicitation microstructure of a ternary cast A1-5.17Cu-2.63Si alloy is investigated.To create widely different cooling rates for the investigated alloy, the melts were cast into four molds made of different materials: aluminum, graphite, sand, and alumina-silicate-fiber felt (a thermal-insulated material), respectively.The cooling curves for each mold specimen were simultaneously measured using calibrated K-type thermocouples, which are linked to a PC computer.The microstructures are characterized in terms of eutectic volume fraction and second dendrite arm spacing.The experiment result shows that increasing the cooling rate increases the amount of eutectic phase and decreases significantly the second dendrite arm spacing.
Cooling rate Microstructure AI-Cu-Si alloys
GuangWei ZHAO XiCong YE ZengMin SHI WenJun LIU
College of Mechanical & Material,China Three Gorges University,Yichang,China
国际会议
香港
英文
157-160
2013-06-25（万方平台首次上网日期，不代表论文的发表时间）