Abstract
Compound casting is an efficient method for bonding dissimilar metals, in which a dramatic reaction can occur between the melt and solid. The centrifugal casting process, a type of compound casting, was applied to cast Al/Mg dissimilar bimetals. Magnesium melt was poured at 700°C, with melt-to-solid volume ratios (Vm/Vs) of 1.5 and 3, into a preheated hollow aluminum cylinder. The preheating temperatures of the solid part were 320, 400, and 450°C, and the constant rotational speed was 1,600 rpm. The cast parts were kept inside the casting machine until reaching the cooling temperature of 150°C. The result showed that an increase in preheating temperature from 320 to 450°C led to an enhanced reaction layer thickness. In addition, an increase in the Vm/Vs from 1.5 to 3 resulted in raising the interface thickness from 1.2 to 1.8 mm. Moreover, the interface was not continuously formed when a Vm/Vs of 3 was selected. In this case, the force of contraction overcame the resultant acting force on the interface. An interface formed at the volume ratio of 1.5 was examined using scanning electron microscopy (SEM) equipped with energy-dispersive X-ray spectroscopy (EDS), and the results demonstrated the formation of Al3Mg2, Al12Mg17 and (δ+Al12Mg17) eutectic structures in the interface.
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Acknowledgements
We would like to express our gratitude to the members and technicians of the Porous and Lattice Materials Laboratory (Dr. Divandari’s Lab.) at the Iran University of Science and Technology.
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The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
Sina Ghaemi Khiavi Male, born in Meshkin Shahr, Iran. Ph. D. Candidate, Iran University of Science and Technology. His research interests mainly focus on the metal casting and forming processes, lattice structure, mechanical properties of alloys, and additive manufacturing.
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Sarvari, M., Divandari, M., Saghafian, H. et al. Effect of melt-to-solid volume ratio and preheating temperature on Mg/Al bimetals interface by centrifugal casting. China Foundry 20, 234–240 (2023). https://doi.org/10.1007/s41230-023-2101-y
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DOI: https://doi.org/10.1007/s41230-023-2101-y
Keywords
- compound casting
- centrifugal casting
- Mg/Al bimetal
- preheating temperature
- melt-to-solid volume ratio
- interface