根据实验测量的位向关系,利用原子尺度计算研究了双相不锈钢中杆状奥氏体沉淀相的平衡截面形貌.计算结果显示:沉淀相的平衡形貌含有2个主要择优刻面,且面积近似相等.因此,沉淀相计算截面形貌近似为菱形,与实验观察形貌基本吻合.通过对计算结果的分析,给出了主要择优刻面上的具体位错结构,也与实验测量结果基本吻合. The equilibrium cross-section morphology of rod-shaped austenite precipitates in duplex stainless steel was studied by atomic scale calculation based on the calculated orientation relationship.The calculated results show that the equilibrium morphology of the precipitated phase contains two major preferred facets and The area is approximately equal, so the morphology of the precipitated phase is approximately rhombus, which is basically consistent with the observed morphology.According to the analysis of the calculated results, the specific dislocation structure of the main preferred facets is also obtained, and also with the experimental measurement results Basically consistent.