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用扫描隧道显微镜观察研究了Fe－0．37℃（质量分数，％）钢中仿晶型铁素体（GBA）的表面浮凸，发现GBA确实产生了表面浮凸，浮凸只是由GBA本身引起的，而不是由GBA和它在基体中的塑性变形共同引起的．GBA表面浮凸只在晶界一侧的奥氏体晶粒形成，与此相邻的奥氏体晶粒内未观察到与组织相对应的表面浮凸．说明GSA与奥氏体的界面是共格或半共格的，而与相邻奥氏体的界面可能是非共格的．GBA的浮凸高度为157—352nm，最大形状变形量为0．37．GBA宽面上存在着巨型台阶，台阶的高度约为300nm．边一边激发形核形态在GBA中普遍存在所有这些说明GBA是以激发形核一台阶生长机制形成的
The surface relief of the as-cast ferrite (GBA) in Fe-0.37 ℃ (mass fraction) steel was observed by scanning tunneling microscopy. It was found that GBA did produce surface relief, which was only caused by GBA itself Rather than caused by the GBA and its plastic deformation in the matrix. The GBA surface embossment is formed only on the austenite grains on the grain boundary side, and the surface relief corresponding to the structure is not observed in the adjacent austenite grains. It shows that the interface between GSA and austenite is coherent or semi-coherent, while the interface with adjacent austenite may be non-coherent. GBA embossment height of 157-352nm, the maximum deformation of 0.37. GBA wide surface there is a giant step, the height of the step is about 300nm. While stimulating the nucleation pattern while ubiquitous in GBA, all of these indicate that GBA is formed by stimulating a nucleation-and-growth mechanism