About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing: Interactions between Energy and Materials
|
| Presentation Title |
Influence of Heat Treatment Duration on Microstructural Evolution and Mechanical Characteristics of 17-4 PH Stainless Steel/Inconel 625 Bimetallic Components Manufactured by Fused Filament Fabrication |
| Author(s) |
Yulin Liu, Fuda Ning |
| On-Site Speaker (Planned) |
Yulin Liu |
| Abstract Scope |
The microstructure and mechanical performance of bi-material composites is profoundly impacted by the interfacial regions. This study explores the influence of varying heat treatment durations on the microstructure and mechanical properties of 17-4 PH/IN625 bimetallic components produced using fused filament fabrication (FFF). The components underwent annealing at 1150°C for 1, 4, and 8 hours. Notably, this study observed a progressive increase in the transition zone of iron and nickel atoms across the interface as the duration increased, which was supported by microhardness tests and aligns with the parabolic diffusion law. No new phases formed within the transition zone. The maximum microhardness reached was 186 HV1.0 after 4 hours of annealing. It turns out 4 hours is the optimal duration to get uniform microstructures and enhanced interfacial bonding strength, which broadens the industrial applications of 17-4PH/IN625 bimetallic components.
Keywords: 17-4PH/IN625 bi-metal composites; Fused filament fabrication (FFF); Heat treatment; Transition zone. |