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Comparison of impact characteristic of spheroidal graphite cast iron and cast steel

机译：球形石墨铸铁铸钢冲击特性的比较

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The impact strength of spheroidal graphite cast iron and cast steel was compared aiming to obtain a basic finding of material evaluations of parts which received the impact load. The level of tensile strength is arranged to facilitate thecomparison of materials by using Charpy impact test of making to instrumentation examination for impact examination and the level of the shape of notched bar has been changed. As a result, the following were clarified. In spheroidal graphite cast iron, aabsorbed energy and the maximum load have decreased rapidly with an increase in hardness and the stress concentration by mostly of the absorbed energy being used for the crack to the maximum load to occur. On the other hand, absorbed energies were usedfor both the occurrence of the crack and the spread of the crack and effect of hardness and the stress concentration was smaller than that of the spheroidal graphite cast iron in cast steel. Energy until generating of FCD450 the crack is equal to that ofcast steel and it was clarified to obtain an enough impact strength and the deformability as parts by doing the design by which the stress concentration was avoided
机译：与球形石墨铸铁和铸钢的冲击强度进行比较，旨在获得接受冲击载荷的部件的材料评估的基本发现。拉伸强度的水平布置成通过使用对冲击检查的仪器检测和缺口杆形状的水平来促进材料的表现。结果，澄清了以下内容。在球形石墨铸铁中，吸收能量和最大负荷随着硬度的增加而迅速降低，并且由于将吸收的能量大部分用于裂缝到最大载荷而增加。另一方面，吸收的能量用于裂缝的发生和硬度裂缝的扩散和应力浓度的裂缝和效应小于铸钢中的球形石墨铸铁的发生。能量直到产生FCD450的裂缝等于近距离钢，并澄清它通过做出避免应力集中的设计来获得足够的冲击强度和变形性。

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