一、引言锗(Ge)在钢中的含量不同,钢的性能会有不同程度的改变。在Mn-Ge合金中加入少量的铁元素,可使它们的热膨胀系数恒定性的温度范围扩大,切削性能和模锻性提高。为探明锗在钢中和铁在锗合金中的作用,研究Fe-Ge二元系的相关系是必要的。关于Fe-Ge二元系,前人已做了不少的研究。但所得的结果各不相同,特别是对Fe_(1.67)Ge金属间化合物的存在与否,仍存在有争议,对于各相区的相边界也很不 First, the introduction of germanium (Ge) in the steel content is different, the performance of steel will have different degrees of change. Addition of a small amount of iron to the Mn-Ge alloy increases the temperature range in which the coefficient of thermal expansion is constant, and improves the cutting performance and the forgeability. In order to find out the role of germanium in steel and iron in germanium alloys, it is necessary to study the phase relationship of Fe-Ge binary system. On the Fe-Ge binary system, many people have done a lot of research. However, the results obtained vary, especially for the existence of Fe_ (1.67) Ge intermetallics, which is still controversial. The phase boundaries of each phase are also very poor