Powder bed fusion (PBF) is an additive manufacturing, or 3d printing, technology that uses a heat source—typically a laser—to sinter or fuse atomized powder particles together. Like other additive processes this is
The powder used in this work had a particle size distribution over the range 15–63 μm. Its composition is given in Table 4. During the Laser Beam Powder Bed Fusion process, the baseplate was preheated and kept at a temperature of 400°C or 500°C and the laser speed was varied between 750 mm/s and 950 mm/s.
In modern laser powder bed fusion systems, there are over 100 of such processing parameters, most commonly-considered among which include laser power,
Powder bed fusion (PBF) is a subset of additive manufacturing (3D printing) and works on the same basic principle as other additive manufacturing processes. The two dominant types are laser beam (PBF-LB) and
open access. This study is focused on the 3D printing of NiTi shape memory alloy (SMA) in cuboidal shaped samples via the Laser Powder Bed Fusion (L-PBF) process using a dissimilar material build plate of 316L stainless steel. Four processing parameters were investigated at three levels for the optimization of the process.
Laser powder bed fusion (LPBF) is a leading additive manufacturing technique that utilizes a powerful laser to selectively fuse layers of metal powder, intricately shaping three-dimensional objects [1, 2].LPBF''s versatility revolutionizes various industries; in aerospace, it excels in crafting intricate turbine blades to enhance fuel efficiency [],
Beim Laser Beam Melting handelt es sich um ein pulverbettbasiertes additives Fertigungsverfahren, das in der Industrie weit verbreitet ist. Das Fraunhofer IFAM beschäftigt sich mit der Material- und Prozessentwicklung entlang der gesamten Prozesskette des Laser Beam Meltings. Mit Hilfe unserer Pulveranalytik können Fließverhalten und
Guo, Q. et al. Transient dynamics of powder spattering in laser powder bed fusion additive manufacturing process revealed by in-situ high-speed high-energy x-ray imaging. Acta Mater. 151, 169
The effect of volume energy density and deposition energy density on the roughness, porosity, density and hardness of laser beam powder bed fusion (LBPBF) GTD222 Ni-based superalloy was systematically studied. The results showed that the roughness and porosity of the alloy decreased with the increase of the two laser energy
Powder Bed Fusion (PBF) uses laser or electron beam for fusion and melting of the powder material. EBM (Electron Beam Melting) can be used for plastic as well as for metals but it required a vacuum chamber to create the functional parts. strategy and process parameters on microstructure and its optimization in additively manufactured
The effect of volume energy density and deposition energy density on the roughness, porosity, density and hardness of laser beam powder bed fusion (LBPBF) GTD222 Ni-based superalloy was
Laser Powder Bed Fusion (L-PBF) is an additive manufacturing process which uses a scanning laser beam to selectively melt metal powder in a layer-wise manner to produce solid metal parts. In comparison to conventional subtractive or formative manufacturing processes, L-PBF imposes few design constraints on part geometry and
The main differences between the two are the heat sources used to melt the powder. Take a deeper look into laser and electron beam powder bed fusion: 1. Laser Powder Bed Fusion. In laser powder bed fusion, a laser heats powdered material into parts and products. After a layer of powder has been indexed down, a new layer of powder is
Laser beam powder bed fusion. PBF-LB/M was performed using a commercially available system (3D Systems, DMP350 Flex) equipped with an 1 kW single-mode laser (YLR-1000-WC-Y14 by IPG). Argon gas was used as shielding gas to prevent oxidization during manufacturing. The oxygen concentration of the closed build chamber
Laser-beam powder bed fusion (PBF-LB) technique was used to produce an Al–2.5 %Fe–2 %Cu ternary alloy, featuring a two-phase eutectic composition of α-Al/Al 23 CuFe 4 in non-equilibrium solidification, as determined by thermodynamic calculations. The specimen manufactured by PBF-LB exhibited a high tensile strength exceeding 350
Laser-beam powder bed fusion (PBF-LB) technique was used to produce an Al–2.5 %Fe–2 %Cu ternary alloy, featuring a two-phase eutectic composition of α
Abstract. In laser-based powder bed fusion of metals (PBF-LB/M), the laser beam shape significantly influences the temperature distribution and melt pool dimensions. Recent advances in beam shaping technology allow for more flexibility in changing the laser beam profile in time and space. For example, ring-shaped and top
Powder Bed Fusion (PBF) is a 3D printing technology in combination of computer aided design that uses a high power source (laser or electron beam) to melt and fuse the powder present inside a container. The technique allows the fabrication of a wide range of materials to form geometrically complex scaffold architectures with high precision.
Single-crystal-like stainless steel 316L (SS316L) was tailored by laser beam powder bed fusion (PBF-LB). Tensile responses along the <100>, <110> and <111> crystallographic directions show considerably different strength ratios in different orientations from a standard face-centered cubic (FCC) alloy. A multi-scale crystal plasticity modelling
Laser Beam Powder Bed Fusion (LB-PBF) process is one of the metal AM processes that is extensively investigated for manufacturing commercial parts. Like the other AM processes, LB-PBF process inherently involves complex physics that often results in anisotropic and/or location specific microstructures, which are different from the
Powder bed fusion builds parts by selectively melting or sintering powdered material. Here, a laser powder bed fusion 3D printer prints in titanium. Created
Metal additive manufacturing (AM) (i.e. laser-powder bed fusion (LPBF), electron beam powder bed fusion (EBPBF) and direct energy deposition (DED)) has
Laser-powder bed fusion (L-PBF) refers to the AM process wherein a laser energy source selectively melts or sinters specific regions of a powder bed. The process involves the rapid melting and solidification of thin layers of metallic powders spread onto a building platform, employing a laser source to produce fully dense free-geometry
Laser Powder Bed Fusion is a powder bed based additive manufacturing process that is most widely used in the industry. The Fraunhofer IFAM deals with material and process development along the entire process chain of laser beam melting. Our powder analytics can be used to characterize the flow behavior and packing behavior of the raw material
Laser beam powder bed fusion (LB-PBF) works on the principle of consolidating feedstock material in layers towards the fabrication of complex objects through localized melting and resolidification using high-power energy sources, namely a laser beam (Fig. 3) involves depositing a thin layer of powder onto a build plate, melting the
Laser-beam powder bed fusion (PBF-LB) is an additive manufacturing process that can offer the precise manufacturing of parts with complex shapes and structures [11], [12]. Moreover, it is a non-equilibrium process characterized by a high temperature gradient, rapid solidification, and a re-melting effect.
Powder bed fusion (PBF) methods use either a laser or electron beam to melt and fuse material powder together. Electron beam melting (EBM), methods require a vacuum but can be used with metals and alloys in the creation of functional parts. All PBF processes involve the spreading of the powder material over previous layers.
One of the most exciting areas in the field of AM, promising a quick transition from rapid prototyping to production technology [2], [3], is the powder bed fusion (PBF) of metals, in which either a laser or an electron beam source heats, melts and fuses metallic powder particles to produce metallic parts in a layer-by-layer fashion [4].