Magnesium and its alloys have increasingly gained attention due to their attractive properties, including the high specific strength that makes them suitable for several applications in different industries. However, their applications in load‐bearing components require an understanding of their fracture behavior especially when notches are present which is still limited. The aim of this work is to investigate the fracture behavior of notched ZK60‐T5 magnesium. Eleven different U‐ and V‐notched geometries were examined. The mechanical tests showed that the presence of notches reduces the ductility of the material. This was confirmed by the SEM as the size of the shear lips was shown to decrease by increasing the notch acuity. The Strain Energy Density (SED) is used to predict the failure loads of the differently notched samples, and the results suggest high reliability of this approach with deviations between the theoretical and experimental data often lower than 10%.

中文翻译：

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缺口ZK60-T5镁样品的准静态断裂行为的实验表征和理论预测

镁及其合金由于其引人注目的特性（包括使其适合于不同行业的多种应用的高比强度）而受到越来越多的关注。但是，它们在承重组件中的应用需要了解它们的断裂行为，尤其是在存在缺口的情况下，缺口仍然很有限。这项工作的目的是研究带缺口的ZK60-T5镁的断裂行为。检查了11种不同的U形和V形缺口几何形状。机械测试表明，缺口的存在降低了材料的延展性。SEM证实了这一点，因为剪力唇的大小显示出通过增加切口的锐度而减小。应变能密度（SED）用于预测不同缺口样品的破坏载荷，