In this work, the influence of the metallic matrix heterogeneities and the spheroidal graphite nodules distribution on both crack initiation and propagation and damage evolution during tensile loading of ferritic spheroidal graphite cast iron is examined. The experimental methodology involves specialized metallographic techniques, step by step tensile loading, microscopic observation by using optical and scanning electron microscopy and three‐dimensional (3D) reconstruction of the graphite nodules distribution.

中文翻译：

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铁素体球墨铸铁微观结构异质性与损伤机理的关系

在这项工作中，研究了铁素体球墨铸铁在拉伸载荷过程中金属基体异质性和球墨状石墨结核分布对裂纹萌生和扩展以及损伤演变的影响。实验方法包括专门的金相技术，逐步拉伸载荷，使用光学和扫描电子显微镜的显微镜观察以及石墨结核分布的三维（3D）重建。