About this Abstract |
Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
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Symposium
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2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
Presentation Title |
Location-Specific Engineered Microstructure Using Interpenetrating Lattices in Laser Powder-Bed Fusion |
Author(s) |
Bharath Bhushan Ravichander, Shweta Hanmant Jagdale, Golden Kumar |
On-Site Speaker (Planned) |
Bharath Bhushan Ravichander |
Abstract Scope |
Laser powder-bed fusion (LPBF) is a prominent additive manufacturing process known for its precision in fabricating intricate metal components. The nature of the LPBF process enables the fabrication of parts with location-specific microstructures. However, due to the process's rapid heating and cooling cycles, the microstructure of the fabricated parts is predominantly anisotropic. To address this challenge, this study introduces interpenetrating lattice-based laser rescanning to control the local solidification conditions during the LPBF process and modify the location-specific microstructure in IN718 samples. The interpenetrating lattice-based laser rescanning approach significantly influenced the melt pool dimensions, grain size distribution, and microhardness. The results demonstrate the formation of a controlled combination of equiaxed and columnar microstructure. The study showcases the potential of interpenetrating lattice-based laser rescanning as a promising avenue for achieving precise control over the microstructure in LPBF, opening new avenues to enhance the performance and functionality of additively manufactured metal components. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |