摘要
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。
Through theoritical calculation of valence electron structure,electron probe and mssbauer spectroscopy techniques, the authors verified that Fe Mn C atomic segregation zone had been formed in austenitic manganese steel. By analysis on tensile deformation behavior of serial manganese steels, it is indicated that randomly distributed Fe Mn C atomic segregation zone in austenitic martrix has a potent effect retarding initiation of slip system and its interaction on dislocation cause austenitic manganese steel characterized with high work hardening ability, without obvious plastic flow and with jerky characteristic on tensile stress strain curve.
基金
山东省自然科学基金
关键词
锰钢
拉伸变形
电子结构
奥氏体钢
Austenite
Manganese steels
Draw texturing
Electronic structure
