Abstract
Direct metal laser sintering (DMLS) is one of the established processes for the fabrication of implants/scaffolds of metallic alloys (like Ti–6Al–4V, 17–4 precipitate hardened (PH) stainless steel (SS), Ni, etc.). But hitherto little has been reported on dual alloys printing of Ti–6Al–4V and 17–4 PH SS, dissimilar metallic alloys selected based upon the difference in melting point (MP) for fabrication of meta-structure inspired functional prototypes. This paper reports the DMLS-based dual alloys printing by using two different meta-structures (dodecahedron, and octet of Ti–6Al–4V) as infill between Ti–6Al–4V and 17–4 PH SS sandwich structures. Results of the study suggest that octet-based meta-structure was better than dodecahedron (due to a smaller number of nodes) for successful printing of dual alloys with DMLS. The results are supported by scanning electron microscopy (SEM) based on grain size, surface texture, and porosity analysis.
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Acknowledgments
The authors acknowledge the research support provided by the National Institute of Technical Teachers Training and Research, Chandigarh (India).
Funding
The authors are thankful to the Department of Science and Technology for funding under FIST Level-0, Project No. SR/FST/College-/2020/997.
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Significance Statement This study reports the 3D printing of dual alloys (Ti-6Al-4V and 17-4 PH SS) by using two different meta structures (octet and dodecahedron) with DMLS.
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Singh, R., Khan, M.M., Pradhan, S.R. et al. On Meta-structure Inspired 3D Printing of Dual Alloys Using DMLS. Natl. Acad. Sci. Lett. 46, 37–41 (2023). https://doi.org/10.1007/s40009-022-01181-z
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DOI: https://doi.org/10.1007/s40009-022-01181-z