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含硅钢在贝氏体温区短时等温获得了准贝氏体组织：贝氏体铁素体（ＢＦ）＋残余奥氏体（Ａ_Ｒ）．ＢＦ中具有Ｓｐｉｎｏｄａｌ分解现象，类似于马氏体时效的早期现象，结合Ｘ射线衍射法定量测定结果，证明ＢＦ过饱和碳．ＢＦ／Ａ_Ｒ相界面位错是以混合位错为主的位错圈．ＢＦ中含有高密度位错和孪晶，而Ａ_Ｒ中缺陷主要为层错和孪晶，层错面或孪晶面与界面台阶有对应关系，表明阶面不会沿界面宽面侧向移动．根据实验结果提出了贝氏体铁素体在贫碳区中受碳原子扩散控制的位错圈沿缺陷面切变形成的三维模型．
The bainitic ferrite (BF) + retained austenite (A_R) was obtained when the silicon steel was isothermally isothermally in the bainite region for a short time. BF has Spinodal decomposition phenomenon, similar to the early phenomenon of martensite aging, combined with X-ray diffraction quantitative determination of results to prove BF supersaturated carbon. The BF / A_R phase interface dislocation is a dislocation circle dominated by mixed dislocations. BF contains high-density dislocations and twins. However, the defects in A_R are mainly faults and twins. The stacking faults or twin planes have a corresponding relationship with the interface steps, indicating that the planes do not move laterally along the interface. According to the experimental results, a three-dimensional model of the bainitic ferrite shear defect along the defect plane controlled by carbon atom diffusion in the lean zone was proposed.