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３１０奥氏体不锈钢在透射电镜中的原位拉伸观察表明，如在裂尖发射位错后保持恒位移，则在裂尖能形成无位错区（ＤＦＺ）．这个弹性的ＤＦＺ不均匀减薄，其应力集中可等于原子键合力，从而导致纳米级微裂纹在ＤＦＺ中形核，并很快钝化成空洞．如果裂尖发射位错后继续拉伸，则上述基本过程被掩盖，仅看到交滑移使裂尖区减薄，从而导致微米级空洞或裂纹的形核和连接．如稍稍卸载，则可观察到裂尖前反塞积位错群的逆返现象．
In Situ Tensile Observation of 310 Austenitic Stainless Steel in Transmission Electron Microscopy shows that no dislocation zone (DFZ) can be formed at the crack tip if constant displacement is maintained after the dislocation of the crack tip. This elastic DFZ is not uniformly thinned and its stress concentration can be equal to the atomic bonding force, resulting in the nucleation of nano-scale micro-cracks in the DFZ and soon passivating into cavities. If the crack tip emits dislocations and continues to stretch, the above basic process is masked and only the cross-slip is seen to cause thinning of the crack tip region, resulting in the nucleation and joining of micron-sized cavities or cracks. Such as a little unloading, can be observed before the crack tip anticlockwise dislocation group retrograde phenomenon.