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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Petrov, R. H. | Madrid |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ali, M. A. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Rignanese, Gian-Marco |
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Leary, Martin
Processes and Engineering in Mechanics and Materials
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2024Titanium Multi‐Topology Metamaterials with Exceptional Strengthcitations
- 2023Algorithmic detection and categorization of partially attached particles in AM structures: a non-destructive method for the certification of lattice implantscitations
- 2023The effect of geometric design and materials on section properties of additively manufactured lattice elementscitations
- 2023A virtual stylus method for non-destructive roughness profile measurement of additive manufactured lattice structurescitations
- 2023Reducing the prosthesis modulus by inclusion of an open space lattice improves osteogenic response in a sheep model of extraarticular defectcitations
- 2022Sandwich structure printing of Ti-Ni-Ti by directed energy depositioncitations
- 2021Experimental and computational analysis of the mechanical properties of composite auxetic lattice structurescitations
- 2021On the role of process parameters on meltpool temperature and tensile properties of stainless steel 316L produced by powder bed fusioncitations
- 2020On the role of wet abrasive centrifugal barrel finishing on surface enhancement and material removal rate of LPBF stainless steel 316Lcitations
- 2019Rational design of additively manufactured Ti6Al4V implants to control Staphylococcus aureus biofilm formationcitations
- 2017Electrochemical behaviour of Ti-6Al-4V alloys manufactured by different methods for medical applications
- 2016The Influence of As-Built Surface Conditions on Mechanical Properties of Ti-6Al-4V Additively Manufactured by Selective Electron Beam Meltingcitations
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article
On the role of process parameters on meltpool temperature and tensile properties of stainless steel 316L produced by powder bed fusion
Abstract
S.2438-2452 ; This research aims to identify how meltpool temperature is determined by process parameters in Laser-Based Powder Bed Fusion (LB-PBF) and the effect of meltpool temperature and heat treatment temperature on microstructure and tensile properties. The study illustrates how crystallographic features in 316L stainless steel were developed in response to the meltpool temperature and induced energy density of LB-PBF manufacture, and by post manufacture heat treatment. For this research, 25 samples based on a Taguchi Design of Experiments (DoE) with five parameters over five levels were printed. To improve precision, the DoE was repeated three times and a total of 75 samples were produced. A thermophysical-based analytical model was developed to measure the meltpool temperature and subsequently surface tension of the liquid in melting zones. Then, a statistical method was used to identify the effective process parameters in tensile properties including ultimate strength, fracture strain and toughness. The microstructural evaluation and crystallographic features were presented to identify the governing mechanisms for the discussed phenomena. This result verifies that the meltpool temperature is a driving factor for the microstructural evolution and observed crystallographic features. Results showed that samples with lower meltpool temperatures have smaller grain sizes, superior strength and toughness properties. The crystallographic analysis showed the weak texture and anisotropic properties are dominant by the preferred orientation growth. The geometrically necessary boundary values were also found to be a driving factor for fracture strain. The originality of this paper is identifying the effect of process parameters on meltpool temperature using an analytical model that is developed based on the thermophysical properties of the feedstock. Characterizing the effect of meltpool temperature in crystallographic features are also another contribution of this paper. ; 12