弹孔周围的绝热剪切带沿主剪应力方向形成，与静态塑性变形滑移线方向接近，绝热剪切带上不均匀的变形将产生微裂纹和微孔洞。
An adiabatic shear band formed along the main shear stress around the penetrated hole is approximately consistent with the direction of plastic deformation slip lines in static state.
通过对在疲劳载荷作用下渗碳齿轮钢次表层亚结构的观察发现有持续滑移带形成。
The persistent slip bands were determined by the observations of the substructure near the surface of gear steels on fatigue load.
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