Centrifugal casting is an accepted method for the large-scale production of alloys and composites products. However, up to now, very few studies have been done on the fabrication of the Mg alloys utilizing this technology, especially the higher aluminum containing magnesium alloys. Therefore, an investigation of parameters influencing the properties of the Mg alloys using this approach is necessary. This study aims to investigate the effects of centrifugal casting variables on the microstructure and mechanical properties of AZ80 magnesium (Mg) alloy. The samples were cast with different centrifugal speeds of 800, 1000, and 1200 rpm. After optimizing the centrifugal speed, the effect of thickness on the properties of the samples was investigated. Besides, the mechanical properties of the samples were evaluated using microhardness, tensile, and compression tests. The microstructure and fracture surfaces of samples were analyzed using optical microscopy (OM) and scanning electron microscopy (SEM) images. OM images indicated that the microstructure of samples was composed of α-Mg phase and γ-Mg₁₇Al₁₂ precipitates. A microstructural evolution was observed as a function of the diameter of the samples; i.e., the volume fraction of the γ-Mg₁₇Al₁₂ precipitates decreased by increasing the diameter of the specimens. The findings also illustrated that for all samples, the highest mechanical properties were achieved at the inner layers due to the presence of more γ-Mg₁₇Al₁₂ precipitates. On the other hand, the outer layers owing to their finer grains represented higher mechanical properties compared with the middle layer.

离心铸造是大规模生产合金和复合材料产品的公认方法。然而，到目前为止，关于利用该技术制造镁合金的研究还很少，尤其是含铝量较高的镁合金。因此，有必要使用这种方法研究影响镁合金性能的参数。本研究旨在研究离心铸造变量对 AZ80 镁 (Mg) 合金组织和力学性能的影响。样品以 800、1000 和 1200 rpm 的不同离心速度浇铸。在优化离心速度后，研究了厚度对样品性能的影响。此外，还通过显微硬度、拉伸强度、和压缩测试。使用光学显微镜 (OM) 和扫描电子显微镜 (SEM) 图像分析样品的微观结构和断口表面。OM图像表明样品的显微组织由α-Mg相和γ-Mg组成₁₇ Al ₁₂沉淀。观察到作为样品直径的函数的微观结构演变；即，随着试样直径的增加，γ-Mg ₁₇ Al ₁₂析出物的体积分数降低。研究结果还表明，对于所有样品，由于存在更多的 γ-Mg ₁₇ Al ₁₂沉淀物，在内层实现了最高的机械性能。另一方面，与中间层相比，外层由于晶粒更细而表现出更高的机械性能。