In the current study, the microstructural consistency in a laser powder bed fusion (L-PBF) AlSi10Mg material is investigated. A rectangular sample with a height of 40 mm is fabricated through the L-PBF technique. The main aim of the study is to analyze the effect of the repeated thermal cycles on the hierarchical characteristics of the microstructure in solid state. While the top of the sample represents the material experienced the minimum numbers of repeated thermal cycles, by moving towards the bottom of the sample more repeated thermal cycles experienced by the material. The microstructure of the material is investigated in terms of the grain and cell structures, and the precipitates characteristics. It is observed that the grain and cell structures are consistent throughout the height since they develop during the solidification process and are not affected by the repeated thermal cycles. On the other hand, these repeated thermal cycles affect the characteristics of the precipitates and the chemistry of the matrix. Although the precipitates’ characteristics change under the effect of the repeated thermal cycles, these changes do not affect the strength of the material significantly.

在当前的研究中，研究了激光粉末床熔融 (L-PBF) AlSi10Mg 材料的微观结构一致性。通过 L-PBF 技术制作了一个高度为 40 mm 的矩形样品。该研究的主要目的是分析重复热循环对固态微观结构层次特征的影响。虽然样品的顶部代表材料经历的重复热循环次数最少，但通过向样品底部移动，材料经历的重复热循环次数更多。从晶粒和细胞结构以及沉淀特征方面研究材料的微观结构。观察到晶粒和细胞结构在整个高度上是一致的，因为它们在凝固过程中发展并且不受重复热循环的影响。另一方面，这些重复的热循环会影响沉淀物的特性和基体的化学性质。尽管在重复热循环的影响下析出物的特性发生了变化，但这些变化不会显着影响材料的强度。