1. Repositório Aberto da Universidade do Porto
2. FEUP - Faculdade de Engenharia
3. FEUP - Dissertação

Author(s):	José Maria Bessa Von Hafe Pérez
Title:	Development of MetalFFF for mechanical applications: Mechanical properties and Corrosion characterization
Issue Date:	2023-09-28
Description:	3D printing of polymers (i.e. Fused Deposition Modelling/Fused Filament Fabrication) is a well-known and well-investigated manufacturing method. The relative simplicity of use and low-cost instrumentation means that this technique has spread widely. However, there are many constructive constraints and limitations. First, the strong anisotropy of the 3D printed parts. Second, the layer-by-layer construction involves a decrease in the mechanical properties compared to the same geometries obtained with conventional techniques. Finally, the surface roughness appears to be greatly compromised by the type, cost and tolerances of machine used and influenced by a layer thickness almost always greater than 100 microns. In this framework, the following thesis work add an extra level of complexity compared to pure polymer printing focusing on hybrid polymer-based filaments highly filled with metal particles (i.e. 17-4 PH). The 3D printing of metals using composite filaments, referred in the literature as metal FFF, has recently been investigated by the research group of Prof. Gianluca Cicala at the University of Catania, in terms of determining the mechanical responses of green and sintered parts of 316L and 17-4 PH steel samples. Among the works recently carried out, there is the mechanical characterization of the sintered samples in 17-4PH obtained from different printing profiles, the result of a combination of several printing parameters. Among the objectives of this thesis work, it is interesting to investigate a printing profile and to characterize the sintered metal parts before and after the machining of the green parts. The tests carried out will include tensile and/or bending tests, corrosion resistance tests, morphological findings by optical microscopy and surface roughness. The ultimate goal is to determine the effect of machining at a convenient stage on green parts, rather than on dense metal parts, on the mechanical and corrosion properties of metal samples based on 17-4 PH mainly.
Subject:	Engenharia mecânica Mechanical engineering
Scientific areas:	Ciências da engenharia e tecnologias::Engenharia mecânica Engineering and technology::Mechanical engineering
DOI:	10.34626/rtnd-an10
TID identifier:	203473787
URI:	https://hdl.handle.net/10216/155110
Document Type:	Dissertação
Rights:	openAccess
Appears in Collections:	FEUP - Dissertação

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.