Laser Powder Bed Fusion (LPBF) of In718 and the Impact of Pre-Heating at 500 and 1000 °C: Operando Study [PDF]
Materials, 2021 The morphology of a melt pool has a critical role in laser powder bed fusion (LPBF). Nevertheless, directly characterizing the melt pool during LPBF is incredibly hard. Here, we present the melt pool flow of the entire melt pool in 3D using mesoscopic simulation models. The physical processes occurring within the melt pool are pinpointed.
Asif Ur Rehman +2 more
exaly +6 more sources
Laser powder bed fusion (LPBF) of commercially pure titanium and alloy development for the LPBF process. [PDF]
Front Bioeng Biotechnol, 2023 Laser powder bed fusion (LPBF) of titanium or titanium alloys allows fabrication of geometrically more complex and, possibly, individualized implants or osteosynthesis products and could thus improve the outcome of medical treatments considerably. However, insufficient LPBF process parameters can result in substantial porosity, decreasing mechanical ...
Haase F, Siemers C, Rösler J.
europepmc +7 more sources
Evaluation of Inconel 718 Metallic Powder to Optimize the Reuse of Powder and to Improve the Performance and Sustainability of the Laser Powder Bed Fusion (LPBF) Process [PDF]
Materials, 2021 In this paper, a detailed assessment of Inconel 718 powder, with varying degrees of degradation due to repeated use in the Laser Powder Bed Fusion (LPBF) process, has been undertaken. Four states of IN718 powder (virgin, used, overflow and spatter) were characterized in terms of their morphology, flowability and physico-chemical properties.
Konrad Gruber +2 more
exaly +5 more sources
Investigation of laser-powder interaction in laser powder bed fusion process in additive manufacturing [PDF]
EPJ Web of Conferences, 2021 Laser powder bed fusion (LPBF) is one of the most promising additive manufacturing (AM) technologies to fabricate metal components using laser beams. To understand the underlying thermal and physical phenomena in LPBF process, discrete element method ...
Li Erlei +4 more
doaj +3 more sources
Investigation on the influence of powder humidity in Laser Powder Bed Fusion (LPBF)
Procedia CIRP, 2022 115120In the Laser Powder Bed Fusion (LPBF) process, parts are built out of metal powder material by exposure of a laser beam. During handling operations of the powder material, several influencing factors can affect the properties of the powder material
Christian Weiss +4 more
openaire +2 more sources
Journal of Materials Research and Technology, 2021 Laser powder bed fusion (LPBF) is a powder-based Additive Manufacturing (AM) technology, where the quality control of powder feedstock is critical as the particle packing on the powder bed and laser–particle interaction during laser melting influence the
Fuzhong Chu +10 more
doaj +3 more sources
Exploring the actual stacking height of metal powder bed in laser powder bed fusion additive manufacturing [PDF]
Scientific ReportsLaser Powder Bed Fusion (LPBF) is an additive manufacturing process that builds parts by layer-by-layer spreading and selective laser melting of metal powders. The characteristics of the powder bed are closely related to laser parameters and the particle
Pan Lu +5 more
doaj +2 more sources
Material Reuse in Laser Powder Bed Fusion: Side Effects of the Laser—Metal Powder Interaction [PDF]
Metals, 2020 Metal additive manufacturing is changing the way in which engineers and designers model the production of three-dimensional (3D) objects, with rapid growth seen in recent years. Laser powder bed fusion (LPBF) is the most used metal additive manufacturing
Eleonora Santecchia +2 more
doaj +2 more sources
Manufacturability of AlSi10Mg overhang structures fabricated by laser powder bed fusion
Materials & Design, 2018 The main advantage of laser powder bed fusion (LPBF) is its use for directly manufacturing metal components with highly complex geometries. But the LPBF manufacture of overhang structures, also known as downward-facing surfaces, is a challenge because of
Quanquan Han +5 more
doaj +3 more sources
Heat Treatment of NiTi Alloys Fabricated Using Laser Powder Bed Fusion (LPBF) from Elementally Blended Powders. [PDF]
Materials (Basel), 2022 The use of elemental metallic powders and in situ alloying in additive manufacturing (AM) is of industrial relevance as it offers the required flexibility to tailor the batch powder composition. This solution has been applied to the AM manufacturing of nickel-titanium (NiTi) shape memory alloy components.
Chmielewska A +9 more
europepmc +4 more sources