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通过对BHW35钢光滑圆柱和圆周切口试件的拉伸实验，分析了试件的变形过程和宏观断裂特征，得出了应力三维度与断裂机制的关系。
The deformation process and macroscopic fracture characteristics of BHW35 steel were analyzed by means of tensile tests on smooth cylindrical and circumferential notched specimens. The relationship between the three dimensional stress and the fracture mechanism was obtained.