Additive Manufacturing of SS316L/IN718 Bimetallic Structure via Laser Powder Bed Fusion
Asif Mahmud, Nicolas Ayers, Thinh Huynh, Yongho Sohn
Abstract
Laser powder bed fusion (LPBF) is a popular additive manufacturing (AM) technique that has demonstrated the capability to produce sophisticated engineering components. This work reports the crack-free fabrication of an SS316L/IN718 bimetallic structure via LPBF, along with compositional redistribution, phase transformations and microstructural development, and nanohardness variations. Constituent intermixing after LPBF was quantitatively estimated using thermo-kinetic coefficients of mass transport and compared with the diffusivity of Ni in the austenitic Fe-Ni system.
Topics & Concepts
Bimetallic stripMaterials scienceFusionAusteniteThermal diffusivityRedistribution (election)NialMetallurgyKinetic energyMicrostructureFabricationComposite materialIntermetallicAlloyThermodynamicsMetalLinguisticsPolitical scienceQuantum mechanicsMedicineLawPhysicsPoliticsPhilosophyAlternative medicinePathologyAdditive Manufacturing Materials and ProcessesAdditive Manufacturing and 3D Printing TechnologiesHigh Entropy Alloys Studies