Fatigue strength assessment of “as built” AlSi10Mg manufactured by SLM with different build orientations

This study investigated the effects of the ‘as-built’ condition on the fatigue properties of an AlSi10Mg aluminium alloy manufactured by Selective Laser Melting (SLM) in different orientations. The results showed a moderate correlation between defects/surface features at the fracture origin and the roughness measurements. On the other hand, a fatigue strength analysis based on the size of features at fracture origin and residual stress just below the surface proved to be successful. Although considering the synergistic effect of different variables increased the scatter in fatigue life data points, a fatigue strength model including short crack effect and residual stresses made it possible to estimate the EIFS close to the real critical features. This dataset contains the full details of experimental data for the paper: "Fatigue strength assessment of “as built” AlSi10Mg manufactured by SLM with different build orientations" by: S. Beretta , M. Gargourimotlagh , S. Foletti , A. du Plessis , M. Riccio International Journal of Fatigue 139 (2020) 105737 https://doi.org/10.1016/j.ijfatigue.2020.105737

本研究探究了不同成型取向下，采用选择性激光熔化（Selective Laser Melting, SLM）制备的AlSi10Mg铝合金的竣工态（as-built）状态对其疲劳性能的影响。结果表明，断裂源处的缺陷/表面特征与粗糙度测量值之间存在中等程度的相关性。另一方面，基于断裂源处特征尺寸与表层下残余应力开展的疲劳强度分析被证实效果良好。尽管考虑不同变量的协同效应会增大疲劳寿命数据的离散程度，但纳入短裂纹效应与残余应力的疲劳强度模型，仍可实现对与实际临界特征相近的等效初始缺陷尺寸（Equivalent Initial Flaw Size, EIFS）的精准估算。本数据集完整收录了论文《不同成型取向SLM制备AlSi10Mg铝合金的竣工态（as-built）疲劳强度评估》的全部实验数据细节，作者为S. Beretta、M. Gargourimotlagh、S. Foletti、A. du Plessis、M. Riccio，发表于《国际疲劳期刊（International Journal of Fatigue）》2020年第139卷，文章编号105737，DOI链接：https://doi.org/10.1016/j.ijfatigue.2020.105737