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综述了WC-Co硬质合金弹性性能的预测模型,并计算了硬质合金不同Co含量时的弹性性能参数值,并对不同的模型的预测值与文献中的测量结果进行了比较。采用引入WC晶粒邻接度C的Golovchan模型计算的WC-Co硬质合金的弹性模量值,相比Voigt-Reuss模型和Hashin-Shtrikman模型,更接近于实测值。而泊松比的值相对偏低,但可以采用Hashin-Shtrikman模型的泊松比上限确定泊松比的值。另外,给出了弹性模量的实验测定方法标准。这为硬质合金重要弹性参数值的确定提供了实验测定和理论计算的依据。
The prediction models of elastic properties of WC-Co cemented carbide are reviewed. The elastic performance parameters of the cemented carbide with different Co contents are calculated. The predicted values of different models are compared with those in the literature. The elastic modulus of WC-Co cemented carbide calculated by Golovchan model with WC degree of WC introduced is closer to the measured value than that of Voigt-Reuss model and Hashin-Shtrikman model. However, the Poisson’s ratio is relatively low, but the Poisson’s ratio can be determined by the upper bound of the Poisson’s ratio of the Hashin-Shtrikman model. In addition, the experimental method for determining the elastic modulus is given. This provides the basis for experimental determination and theoretical calculation for the determination of important elastic parameters of cemented carbide.