About this Abstract |
| Meeting |
2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
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| Symposium
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2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
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| Presentation Title |
Fabrication and Mechanical Characterization of Dissimilar Inconel 625/CuNi30 Interlocking Joints Using Laser Powder Directed Energy Deposition |
| Author(s) |
Sina Nejati Eghteda, Albert C. To |
| On-Site Speaker (Planned) |
Sina Nejati Eghteda |
| Abstract Scope |
Joining dissimilar metals presents persistent challenges due to differences in thermal expansion, melting points, and metallurgical compatibility. Interlocking joints fabricated via laser powder directed energy deposition (LP-DED) offer a pathway to mechanical load transfer across a bimaterial interface without relying primarily on metallurgical bonding. This work investigates the fabrication and mechanical characterization of dissimilar Inconel 625/CuNi30 interlocking joints produced by LP-DED. Digital image correlation (DIC) is employed during mechanical loading to map full-field strain distributions, identify regions of strain concentration, and track the sequence of failure initiation across the joint. The effects of deposition sequence—alternating the print order of each alloy—and interlocking overlap distance on joint stiffness, load capacity, and failure mode are systematically examined. This study aims to establish how deposition strategy and geometric parameters govern the mechanical response of LP-DED multi-material assemblies, with the goal of developing design guidelines for structural applications requiring combined thermal and mechanical performance. |
| Proceedings Inclusion? |
Undecided |