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本文从多方面研究观察再次证实贝氏体铁素体相变基元的存在，相变基元为切变相变基元，并提出其形态示意图。在Ｆｅ－Ｃ合金中，本文观察到正三角型、交叉型、“Ｎ”型和蝴蝶型类马氏体形貌贝氏体。在交叉型贝氏体中，发现基元相对滑移的、相互脱节的、形成“束腰”的和互换生长取向的交叉型贝氏体，交叉效应直接体现于相变基元的活动行为，相应提出其活动行为示意图。导致交叉的应力场是切变相变剪切应力集中应力场，贝氏体交叉的形成是切变应力－应变诱发贝氏体转变的结果。在应变诱发贝氏体转变时，相变驱动力的补偿与奥氏体所发生的真实应变的平方成正比，两贝氏体铁素体碰撞非常猛烈，承认其形成方式为切变型可得到说明。
This article from a variety of research observations confirmed once again the presence of bainitic ferrite transformation element, phase transformation element as the transformation phase change element, and put forward its morphological diagram. In Fe-C alloys, we observed the equiaxed, cross-shaped, “N” and butterfly-type martensite morphology bainite. In cross-type bainite, the relatively slippery, disjoint elements of cross-type bainite were found, forming a “corset” cross-bainite with interchanged growth orientation. The cross effect is directly reflected in the activity of the phase transition element , Corresponding to the proposed action plan. The stress fields that lead to the crossover are the concentrated stress field of shear stress of shear transformation, and the formation of bainite cross is the result of shear stress-strain induced bainite transformation. In strain-induced bainite transformation, the phase-shifting driving force compensation is proportional to the square of the true strain occurring in austenite, and the bainitic ferrite collides very violently, recognizing that the formation method is a shear type .