热膨胀是金属和合金最基本最重要的性质之一,它有着广泛的实际用途。在金属和合金的制备、加工和使用过程中,都必须考虑热膨胀的影响。前人已作了许多金属和合金线热膨胀系数的实验测定工作,获得了不少实验数据,实验技术也在不断发展。基于检验实验数据的准确性和探讨热膨胀规律性的目的,人们曾进行了一些理论计算工作,但至今未见有 Thermal expansion is one of the most basic and important properties of metals and alloys and has a wide range of practical uses. In the preparation of metals and alloys, processing and use, we must consider the impact of thermal expansion. Many predecessors have done a lot of experiments on the determination of thermal expansion coefficient of metal and alloy wire work, obtained a lot of experimental data, experimental technology is also growing. Based on the accuracy of testing experimental data and the purpose of exploring the regularity of thermal expansion, some theoretical calculations have been made, but so far no