本文对影响m-δ关系散乱的两个主要因素,m值变化及初始不均匀的差异进行了分析.给出了包含m值变化的,m-δ关系式和包含初始力学缺陷的m-δ关系式.并证明在超塑性状态(n=0)两种初始不均匀(几何不均匀和力学不均匀)存在某种等效关系.考虑到m值变化和初始不均匀的差异,理论计算曲线能够包含相当数量合金的实验结果. In this paper, we analyze the two main factors that affect the relationship between m-δ, the variation of m and the initial non-uniformity, and give the m-δ relationship including the variation of m and the δ-δ It is proved that there is an equivalent relationship between the two initial inhomogeneities (geometric heterogeneity and mechanical inhomogeneity) in the superplastic state (n = 0). Considering the difference between the change of m value and the initial inhomogeneity, the theoretical calculation curve Can contain a considerable amount of alloy experimental results.