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20年前已经研究过非金属夹杂物对钢性能的影响。本文较为详细地研究试样中含有硫化物和氮化物两种类型的夹杂物对钢韧性的影响。根据一系列试样测定了几种断裂参数 ,用以验算 Krafft和其他学者建立的断裂模型。实验结果得出这样结论 :按照 Krafft公式计算的 KIC值与通过实验获得的 KIC值相一致。
20 years ago has studied the impact of non-metallic inclusions on steel properties. In this paper, the effect of two types of inclusions containing sulfide and nitride on the toughness of steel is studied in more detail. Several fracture parameters were determined based on a series of specimens to verify the fracture model established by Krafft and others. The experimental results lead to the conclusion that the KIC calculated according to Krafft’s formula is consistent with the KIC obtained experimentally.