计算单相合金球状晶生长半径的数学模型

Mould Calculating the Growth Radius of a Global Grain in the Single-phase Alloy

在Aron和Greer球状晶生长模型的基础上,分析了单相合金晶粒生长时间与冷却速度的关系,建立了计算单相合金球状晶生长半径的数学表达式。结果表明:晶粒生长半径与冷却速度的平方根成反比。该模型能与试验结果很好符合。

Based on the Aron＇s mould, a mathematical equation was deduced to calculate the growth radius of a global grain in the single-phase alloy by analyzing the relations between growing time of the grain and the ckkling rate of the single-phase alloy. The equation indicates that the growth radius is inversely proportional to the square foot of the cooling rate. It is verfied that the equation accords with the experimental results.