Abstract
Producing bulk high-specific strength materials that replace steel airframe structures like stringers is the only optimistic alternative that can meet the future needs of the aviation sector. Stir casting, a prominent fabrication route to produce bulk materials, is employed in the current investigation to prepare aluminum composites reinforced with graphene nanoplatelets. However, the influence of dross on reinforcement infiltration into melt is unexplored by researchers and hence essential. The critical experimental insights reveal that dross hinders the nanoreinforcement incorporation into the melt; i.e., 25 to 40% of introduced GNPs are entrapped in dross. Moreover, superior mechanical behavior with an ultimate tensile strength (UTS) of 203 MPa led by a good uniform distribution of GNPs with no evidence of voids and clusters is observed for 1.5 wt.% GNP cast sample. Quantitative X-ray maps and EDS analysis reveal no iron contamination and their intermetallic compounds that degrade the strength of cast samples.
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TKK wrote the original draft and worked on the software. MK worked on the software. TKK and MK defined the methodology, reviewed, and edited the manuscript. PK supervised the work. All authors read and approved the final manuscript.
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Kotteda, T.K., Kumar, M. & Kumar, P. Experimental insights and micrographical investigation on graphene nanoplatelet–reinforced aluminum cast composites. Int J Adv Manuf Technol 131, 2707–2718 (2024). https://doi.org/10.1007/s00170-023-12270-8
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DOI: https://doi.org/10.1007/s00170-023-12270-8