Short cracks propagation research: the degree of Microscopic structure influence to the fatiguecrack propagation depends on crack length.
短裂纹扩展研究：微观组织结构对疲劳短裂纹扩展的影响程度取决于裂纹的长度。
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The studies were carried out of the test of fatiguecrack growth rate and relative to the microscopic morphology of fracture surface in certain high-strength steels.