Abstract
This study aimed to investigate the effects of adding Mn to a 0.5%Cu-added A356 alloy on the interfacial layer formed between the alloy and cast iron in compound casting. The results showed that the interfacial compounds layer thickness and the types of phases constituting the layer were significantly influenced by the addition of Mn. Microstructural analysis of the interface revealed an increase in interlayer thickness with the addition of 0.3%Mn. Moreover, the almost absence of Al4.5FeSi phase in the interfacial layer, which is typically observed close to aluminum region, was noted when Mn was added. Instead, the formation of Al(Fe,Mn)Si phase containing Mn was observed with the addition of 0.3%Mn. The Mn-rich phase was identified as cubic-Al(Fe,Mn)Si phase through TEM analysis. Additionally, comparing the nanoindentation hardness of the interfacial compounds layer of the Mn-added alloy with that of the base alloy (0.5%Cu-added A356) showed that the hardness near the aluminum region was relatively higher in the Mn-added alloy.
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This work was supported by the Industrial Strategic Technology Development Program funded by the Korean Government (MOTIE) (No. 20004117).
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Min, KM., Shin, JS. & Kim, JM. Effect of Mn Addition to Al–Si Alloy on the Layer Formed at the Interface with Cast Iron in Compound Casting. Inter Metalcast 18, 242–250 (2024). https://doi.org/10.1007/s40962-023-01024-7
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DOI: https://doi.org/10.1007/s40962-023-01024-7