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本文通过价电子结构理论计算和电子探针及穆斯堡尔谱实验证明，锰钢奥氏体中形成了Ｆｅ－Ｍｎ－Ｃ原子团偏聚区；通过对系列奥氏体锰钢拉伸变形行为的分析表明，散乱分布于奥氏体基体中的Ｆｅ－Ｍｎ－Ｃ原子团偏聚区对滑移系启动的强烈阻滞和与位错的交互作用是造成奥氏体锰钢高的加工硬化能力、屈服现象不明显和拉伸应力－应变曲线上出现锯齿特征的主要原因
In this paper, the valence electron structure theory calculations and the electronic probe and Mossbauer spectroscopy experiments show that manganese-steel austenite formed Fe-Mn-C atomic cluster segregation zone; through the series of austenitic manganese steel tensile deformation behavior Analysis shows that the strong retardation of the slip system initiation and the interaction with dislocation caused by the segregation of Fe-Mn-C radicals scattered in the austenite matrix result in high work hardening ability of the austenitic manganese steel , The phenomenon of yielding is not obvious and the main reason for the jagged features on the tensile stress-strain curve