About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing: Design, Materials, Manufacturing, Challenges and Applications
|
| Presentation Title |
Microstructural Evolution and Mechanical Response of LPBF-Fabricated IN718/SS316L Functionally Graded Materials |
| Author(s) |
Sara Ranjbareslamloo, Gabriel Awuku , Md. Muhiul Muhit, Ala Qattawi |
| On-Site Speaker (Planned) |
Sara Ranjbareslamloo |
| Abstract Scope |
Laser Powder Bed Fusion (LPBF) enables the fabrication of Functionally Graded Materials (FGMs) with tailored performance superior to monolithic alloys. This study examines the compatibility and microstructural evolution of FGMs composed of Inconel 718 (IN718) and Stainless Steel 316L (SS316L), produced via LPBF. A combination of experimental and computational methods was employed to characterize the graded region. Microstructural features and phase composition were analyzed using X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive spectroscopy (EDS), while optical microscopy was used to verify the compositional transition. Hardness profiling and tensile testing were conducted to evaluate mechanical property variation, including yield strength (YS) and ultimate tensile strength (UTS). Surface roughness measurements were also performed to assess as-built quality. Results confirmed a smooth transition between IN718 and SS316L, with continuous microstructural and mechanical gradients, demonstrating the feasibility of LPBF for fabricating FGMs suitable for high-performance engineering applications. |