The crack nucleation energy and the propagation energy were measured under impact and tensile testing. The fracture surface was examined by SEM.
测定了析出相的类型和组成，测试和计算了冲击、拉伸状态下裂纹的形核能与扩展能，并通过SEM研究了断面形貌。
The fracture surface appeared intergranular crack, due to the oxide formed during tensile test.
拉伸过程中形成的氧化物夹杂成为裂纹源，断口表现为沿晶断裂。
The fatigue fracture surface exhibits obviously impact facture characterization, when the crack propagates into overload tensile zone.
当裂纹扩展至拉伸过载区，断口表面则呈现明显的冲击断裂特征。
应用推荐