Additive Manufacturing of SS316L/IN718 Bimetallic Structure via Laser Powder Bed Fusion

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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.

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Mahmud, A., Ayers, N., Huynh, T., & Sohn, Y. (2023). Additive Manufacturing of SS316L/IN718 Bimetallic Structure via Laser Powder Bed Fusion. Materials, 16(19). https://doi.org/10.3390/ma16196527

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