laser powder
High-precision laser powder bed fusion processing of pure copper
In this work, a high-precision LPBF (hp-LPBF) system with small laser spot (25 µm), fine powder (5–25 µm), and small layer thickness (10 µm) is developed, which …
Manufacturing of high strength and high conductivity copper with …
The laser reflectivity test clearly demonstrates that pure Cu powder exhibits exceptionally high laser reflectivity within the infrared laser range (Fig. 1b), …
A comprehensive review on laser powder bed fusion of steels: …
Abstract. Laser Powder Bed Fusion process is regarded as the most versatile metal additive manufacturing process, which has been proven to manufacture …
Laser Powder Bed Fusion
Laser powder bed fusion (LPBF) has gained the most attention from academia and industry among metal powder–based additive manufacturing techniques. …
3D multi-material laser powder bed fusion: Ti6Al4V–CuNi2SiCr …
A first approach to produce multi-functional Ti6Al4V–CuNi2SiCr parts using a homemade 3D multi-material laser powder bed fusion system (3D MMLPBF) was exploited in this work. Only using a layer-by-layer approach, it is possible to manufacture an 3D multi-material Ti6Al4V–CuNi2SiCr component that combines high mechanical …
Laser powder bed fusion of 316L stainless steel and K220 copper …
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 (LPBF)
Laser powder bed fusion (LPBF) is one of the best-known additive manufacturing processes. In the LPBF process, components are manufactured by selective laser melting. First, the powder material is evenly applied to the build plate with the coater in a thin layer of 10 to 200 micrometers. The material is selectively melted with a directed laser ...
Effect of Laser Power and Powder Morphology on Surface …
Specifically, Laser Powder Directed Energy Deposition (LP-DED) uses the incidence of a high-power laser on metallic powder, coaxially delivered, forming a melt pool that solidifies on a substrate. Although MAM has numerous advantages, surface finishing of fabricated parts remains one of the major concerns .
Laser Powder Bed Fusion of Beta-Type Titanium Alloys for …
Laser powder bed fusion (LPBF) is a micro-area rapid solidification process, which adopts layer-by-laser melting of the powder, using a high-energy laser beam(s) in an inert atmosphere, the melting sequence being in accordance with the CAD [8, 39,40,41].The whole process involves fusing the initial powder layer onto the base …
Coated Metal Powders for Laser Powder Bed Fusion (L …
Abstract. In the last years, functionalized powders are becoming of increasing interest in additive manufacturing (particularly in laser powder bed fusion processing, L-PBF), due to their improved flowability …
Laser powder bed fusion of NiTiFe shape memory alloy via pre …
High-cost pre-alloyed powder is the bottleneck problem that limits the widespread application of additive-manufactured shape memory alloys. In this work, the low-cost ternary NiTiFe shape memory alloy is fabricated by laser powder bed fusion (LPBF) technique via mechanically mixed pre-alloy NiTi powder and varying contents pure Fe …
Corrosion of Duplex Stainless Steel Manufactured by Laser Powder …
Laser powder bed fusion (LPBF) is a commonly used additive manufacturing (AM) method for efficiently producing intricate geometric components. This investigation examines factors such as pores, cellular structure, grain size, and inclusions from the manufacturing process that contribute to the corrosion resistance of LPBF DSS. …
Laser powder bed fusion of oxide dispersion strengthened FeCrAl …
The elemental composition of the Fe–14Cr-4.5Al–2 W–0.45Ti alloy powder (used as matrix material) prepared by vacuum gas atomization. SEM image of the matrix material is shown in Fig. 1 (a).The additional 0.3% (wt) Y 2 O 3 (50 nm, the purity of 99.99%) powder was milled with matrix material in a planetary ball mill (QM-QX4 Instruments) …
Laser powder bed fusion of WE43 magnesium alloy with superior …
Laser powder bed fusion (LPBF) additive manufacturing is expected to solve the above-mentioned challenges of conventional processes [15, 16]. During the LPBF process, the metal powder is melted by the high energy laser (Φ 80 ∼ 120 µm) layer by layer, i.e., this manufacturing method by melt pools accumulation can offer great …
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Laser Powder Bed Fusion
For more than 25 years, the Fraunhofer Institute for Laser Technology ILT has been continuing to develop process control, plant and system technology, as well as applications for the additive manufacturing process laser powder bed fusion (LPBF). The institute''s LPBF Application Development group supports you in transferring the latest ...
Pore defects in Laser Powder Bed Fusion: Formation mechanism, …
Laser powder bed fusion (LPBF) additive manufacturing (AM) technology has been applied to manufacture complex components which have already been used in aerospace, biomedical, and many other fields. However, the LPBF-ed parts still suffer from porosity defects due to the rapid cooling solidification and complex molten pool flow …
Laser Powder Bed Fusion of Powder Material: A Review
Laser powder bed fusion (L-PBF) has drawn increasing interest from enterprises because of its great advantages in additive manufacturing of metal, ceramic, and polymer materials. Although people pay more attention to L-PBF, many problems such as poor density need to be solved urgently. In this article, the commonly used materials of L …
Laser powder bed fusion of 316L stainless steel and K220 copper …
Metal additive manufacturing (AM) (i.e. laser-powder bed fusion (LPBF), electron beam powder bed fusion (EBPBF) and direct energy deposition (DED)) has evolved from a rapid prototyping tool to an important material processing technique towards practical applications [Citation 1, Citation 2].Productions of industrially relevant materials …
A comprehensive review of recent advances in laser powder bed …
Laser powder bed fusion (LPBF) is a leading additive manufacturing technique that utilizes a powerful laser to selectively fuse layers of metal powder, …
Extending the mechanical property regime of laser powder bed …
Laser powder bed fusion (L-PBF) can construct the three-dimensional (3D) components in a layer-by-layer manner boasting the advantages of low tooling cost and unlimited design freedom [1], [2], [3]. In analogy to the micro-welding process, the L-PBF has been broadly implemented to fabricate a variety of weldable alloys, such as the Ti alloys …
Alloy design for laser powder bed fusion additive manufacturing: a …
Metal powders used in L-PBF should have a controlled particle size and shape, as well as good flowability and homogeneity. These properties are crucial for …
Revealing melt-vapor-powder interaction towards laser powder bed …
During the laser powder bed fusion (LPBF) process, powder spattering is a crucial phenomenon to consider. This primarily arises from the intense interaction between the laser and the material. The ensuing metal vapor, induced by the evaporation process, plays a pivotal role in instigating powder spatter, which significantly impacts the …
Process development for laser powder bed fusion of GRCop-42 …
In this contribution, a parametric study was performed for GRCop-42 and the AM process laser powder bed fusion (PBF-LB/M) using a green laser source for two-layer thicknesses of 30 and 60 μm. Density, electrical conductivity, hardness, microstructure, and static mechanical properties were analyzed.
Developing a novel high-strength Mg-Gd-Y-Zn-Mn alloy for laser …
Laser powder bed fusion (LPBF) of Mg alloys mainly focuses on the traditional commercial casting Mg alloys such as AZ91D, ZK60 and WE43, which usually display relatively low tensile strengths. Herein we developed a novel high-strength Mg-12Gd-2Y-1Zn-0.5Mn (wt.%, GWZ1221M) alloy for the LPBF additive manufacturing process, …
Laser powder bed fusion of immiscible steel and bronze: A …
The microstructures and the mechanical properties of a laser powder bed fusion (LPBF) manufactured alloy coupons that were compositionally graded with …
HYbrid Titanium Alloys produced by laser powder bed Fusion using …
The Laser Powder Bed Fusion (LPBF) method is the most used for metallic production, with excellent geometry accuracy for complex parts and improved surface finishing [1]. The LBPF technique is based on the sequential deposition of metallic powder layers, followed by selective laser melting following a two-dimensional pattern.
Pure Tungsten Fabricated by Laser Powder Bed Fusion with …
In this study, pure tungsten parts were fabricated by laser powder bed fusion (LPBF). The effects of volumetric energy density (VED) during LPBF process and hot isostatic pressing (HIP) treatments on the densification behavior, microstructural evolution, mechanical properties and thermal conductivity of printed parts were systematically …
Impact of laser scanning strategies on microstructure in laser …
Laser powder bed fusion (LPBF) is a type of additive manufacturing process, which offers high accuracy and complexity in part geometry. In LPBF, a deposition unit is employed to deposit powder layers from a feed container onto a build platform.
About laser powder
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