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采用透射电子显微镜原位拉伸薄膜试样法研究了ODS铁素体钢中位错发射及微裂纹形核、钝化和扩展的过程．结果表明，ODS铁素体钢在原位拉伸时，裂尖首先发出大量位错并形成无位错区，保持恒位移，纳米级微裂纹在裂纹顶端连续形核或在DFZ中不连续形核，这个微裂纹并不钝化成孔洞．
The dislocation emission and micro-crack nucleation, passivation and expansion of ODS ferritic steels were investigated by in-situ tensile thin film transmission electron microscopy (TEM). The results show that when the ODS ferritic steel is stretched in situ, the crack tip first emits a large number of dislocations and forms a dislocation-free zone, maintaining constant displacement. The nano-scale micro-cracks continuously nucleate at the crack tip or are discontinuous in the DFZ Nuclear, this microcrack does not passivate into a hole.