A model has been developed for the calculation of the microstructural evolution in a rapidly directionally solidified immiscible alloy. Numerical solutions have been performed for Al-Pb immiscible alloys. The results demonstrate that at a higher solidification velocity a constitutional supercooling region appears in front of the solid/liquid interface and the liquid-liquid decomposition takes place in this region. A higher solidification velocity leads to a higher nucleation rate and, therefore, a higher number density of the minority phase droplets. As a result, the average radius of droplets in the melt at the solid/liquid interface decreases with the solidification velocity.
部门归属
chinese acad sci, inst met res, shenyang 110016, peoples r china.
J. Z. Zhao. Model for calculation of microstructural development in rapidly directionally solidified immiscible alloys[J]. Transactions of Nonferrous Metals Society of China,2002,12(3):366-369.
APA
J. Z. Zhao.(2002).Model for calculation of microstructural development in rapidly directionally solidified immiscible alloys.Transactions of Nonferrous Metals Society of China,12(3),366-369.
MLA
J. Z. Zhao."Model for calculation of microstructural development in rapidly directionally solidified immiscible alloys".Transactions of Nonferrous Metals Society of China 12.3(2002):366-369.
修改评论