将数值方法应用于热物性测试 ,设计了一种金属及合金相变时固、液相导热系数的测定方法。通过探测相变过程中相界面的移动曲线 ,并采用数值方法模拟相变过程 ,对金属锌和铝 硅、铅 锑等共晶合金的导热系数进行了研究。所得的结果与文献数据吻合较好 ,表明该方法可用于金属及合金相变条件下热传导的研究以及相变温度附近固、液相导热系数的测试 The numerical method is applied to the thermophysical properties test, and a method for the determination of solid and liquid phase thermal conductivity of metals and alloys during phase transformation is designed. The thermal conductivity of eutectic alloys such as metallic zinc, Al-Si, lead-antimony and so on were investigated by detecting the phase transition of phase interface during phase transformation and using numerical simulation to simulate the phase transformation process. The obtained results are in good agreement with the literature data, indicating that this method can be used for the study of heat conduction under the phase transition conditions of metals and alloys and the test of thermal conductivity of solid and liquid phases near the phase transition temperature