Abstract
Additive manufacturing (AM) is one of the most trending technologies nowadays, and it has the potential to become one of the most disruptive technologies for manufacturing. Academia and industry pay attention to AM because it enables a wide range of new possibilities for design freedom, complex parts production, components, mass personalization, and process improvement. The material extrusion (ME) AM technology for metallic materials is becoming relevant and equivalent to other AM techniques, like laser powder bed fusion. Although ME cannot overpass some limitations, compared with other AM technologies, it enables smaller overall costs and initial investment, more straightforward equipment parametrization, and production flexibility.This study aims to evaluate components produced by ME, or Fused Filament Fabrication (FFF), with different materials: Inconel 625, H13 SAE, and 17-4PH. The microstructure and mechanical characteristics of manufactured parts were evaluated, confirming the process effectiveness and revealing that this is an alternative for metal-based AM.
Highlights
Additive manufacturing (AM) is a disruptive process, and the understanding of its structure and properties is essential to comprehend what happens at the microstructural level (Wang et al 2018a)
The filaments, the surface, and cross-sections of the prepared specimens were analyzed by scanning electron microscope (SEM), and the main objective was to evaluate the powder particle size used
The purpose of this work was to identify what the market is offering for material extrusion (ME) AM and evaluate what could be disruptive and mind changer for academia and industry
Summary
Additive manufacturing (AM) is a disruptive process, and the understanding of its structure and properties is essential to comprehend what happens at the microstructural level (Wang et al 2018a). Denominated as "3D printing", the first applications of AM were used initially for prototyping (Atzeni and Salmi 2015). It was understood its potential as an effective process, to be used from upstream to downstream (Mellor, Hao, and Zhang 2014; Gibson et al 2018). From the fabrication of prototypes in the development phase, tooling, and customers end product (Gibson, Rosen, and Stucker 2015), and allows the manufacturing of Additive Manufacturing: Material Extrusion of Metallic Parts J. The American Society for Testing and Materials (ASTM) defines AM as a process of joining materials to make objects from 3D model data, usually layer upon layer, as opposed to subtractive manufacturing methodologies (ASTM 2012)
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