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本文用扫描电镜较系统的观察了12CrNi3MoV钢不同含硼量试样的冲击断口形貌;硼析出处理和固溶处理试样的冲击断口形貌。结果表明:钢的断口形貌特征与其显微组织有关;钢中硼含量的高、低对断裂小平面大小有影响。
In this paper, the impact fracture morphology of 12CrNi3MoV steel with different boron content was observed systematically by scanning electron microscopy. The impact fracture morphology of boron-treated and solution-treated specimens was observed. The results show that the fracture morphology of the steel is related to the microstructure of the steel. The high and low boron content affects the size of fracture facets.