powder bed additive manufacturing
Numerical investigation on the reuse of recycled powders in powder bed fusion additive manufacturing …
3-Dimensional heat transfer modeling for laser powder-bed fusion additive manufacturing with volumetric heat sources based on varied thermal conductivity and absorptivity Opt. Laser Technol., 109 (2019), pp. 297-312 View PDF View article View in Scopus [51], ...
Influence of particle morphology and size distribution on the powder flowability and laser powder bed …
Laser powder bed fusion (LPBF) additive manufacturing technology is sensitive to variations in powder particle morphology and size distribution. However, the absence of a clear link between the powder characteristics and the LPBF performances complicates the development, selection and quality control of LPBF powder feedstock.
A literature review on powder spreading in additive manufacturing
Abstract. Powder-bed additive manufacturing, including powder bed fusion and binder jetting, has a wide range of applications in various industries. Powder spreading is a critical step of powder-bed additive manufacturing and has a determinative impact on powder bed quality and thus final part quality. This paper provides a literature …
Phase field simulation of powder bed-based additive manufacturing
Quality control in parts built layer-by-layer via Additive Manufacturing (AM) process is still a challenge since critical features, such as the control in porosity, residual stress and deformation, surface roughness and microstructure, are yet to be fully addressed. In this work, we develop a phase field model to simulate powder bed-based AM ...
Powder-bed-fusion additive manufacturing of molybdenum: …
In this paper, the whole process of laser powder-bed-fusion (LPBF) additive manufacturing (AM) in the fabrication of molybdenum (Mo) material was numerically reproduced. Firstly, parameters of Mo powder with continuous size distribution utilized in actual AM production were calibrated and input into discrete element model …
Understanding Powder Bed Fusion Additive Manufacturing
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 …
A review of powder deposition in additive manufacturing by …
In Powder Bed Additive Manufacturing processes, alternatively termed Powder Bed Fusion (PBF) processes, a 3-dimensional part is built sequentially, layer …
Recent progress and scientific challenges in multi-material additive manufacturing via laser-based powder bed …
Multi-material additive manufacturing provides a new route for fabricating components with tailored physical properties. Laser-based powder bed fusion (L-PBF), also known as selective laser melting, is a powder bed-based additive manufacturing technology.
Particle scale modelling of powder recoating and melt pool dynamics in laser powder bed fusion additive manufacturing…
As one of various AM techniques [1], laser powder bed fusion (LPBF) is considered the most practical technique for metal additive manufacturing [5, 6]. In the LPBF process as presented in Fig. 1, thin layers of fine metal powders are evenly distributed using a recoater (blade or roller) onto a substrate plate inside a chamber …
Metals | Free Full-Text | Review of Powder Bed Fusion …
Powder bed fusion (PBF) technology is a group of additive manufacturing (AM) technologies where an energy source is used to selectively bind or melt powder particles to build parts layer by layer to …
A Review of Spatter in Laser Powder Bed Fusion Additive Manufacturing…
Spatter is an inherent, unpreventable, and undesired phenomenon in laser powder bed fusion (L-PBF) additive manufacturing. Spatter behavior has an intrinsic correlation with the forming quality in L-PBF because it leads to metallurgical defects and the degradation of mechanical properties. This impact becomes more severe in the …
Laser powder bed additive manufacturing: A review on the four …
Anomaly detection and classification in a laser powder bed additive manufacturing process using a trained computer vision algorithm Addit Manuf, 19 (Jan. 2018), pp. 114-126, 10.1016/J.ADDMA.2017.11.009 View PDF View article View in Scopus Google Scholar ...
Laser Powder Bed Fusion of Additive Manufacturing Technology
Presents a summary of theoretical research and practical application of powder bed laser melting technology. Provides a research reference for scientific and technological …
Alloy design for laser powder bed fusion additive manufacturing: a …
A laser beam is precisely guided across the powder bed in a pattern defined by the 3D model. As the laser beam scans the powder bed, metallic powders …
Metals | Free Full-Text | Review of Powder Bed Fusion Additive Manufacturing for Metals …
The mechanical properties of Cu metals and alloys fabricated using powder bed fusion additive manufacturing have rarely been investigated in as-built and post-processed conditions [326,327]. The as-built pure copper parts using laser melting exhibited a tensile strength of 211 ± 4 MPa, a yield strength of 122 ± 1 MPa, an elongation at …
A review of powder deposition in additive manufacturing by powder bed …
In Powder Bed Additive Manufacturing processes, alternatively termed Powder Bed Fusion (PBF) processes, a 3-dimensional part is built sequentially, layer after layer. First, a thin layer of powder is applied onto the top surface of a downwards moving fabrication piston. The thickness of this layer typically varies between 30 and 150 μm.
High-Temperature Mechanical Properties of Stress-Relieved AlSi10Mg Produced via Laser Powder Bed Fusion Additive Manufacturing …
The present study is dedicated to the evaluation of the mechanical properties of an additively manufactured (AM) aluminum alloy and their dependence on temperature and build orientation. Tensile test samples were produced from a standard AlSi10Mg alloy by means of the Laser Powder Bed Fusion (LPBF) or Laser Beam …
Powder bed fusion process in additive manufacturing: An overview
Powder bed fusion process is one of the basic technique associated with additive manufacturing. It follows the basic principle of manufacturing the product layer …
Monitoring of the powder bed quality in metal additive manufacturing …
Anomaly detection and classification in a laser powder bed additive manufacturing process using a trained computer vision algorithm Addit. Manuf., 19 (2018), pp. 114-126, 10.1016/j.addma.2017.11.009 View PDF View article View in …
Multiscale Modeling of Powder Bed–Based Additive Manufacturing
Powder bed fusion processes are additive manufacturing technologies that are expected to induce the third industrial revolution. Components are built up layer by layer in a powder bed by selectively melting confined areas, according to sliced 3D model data. This technique allows for manufacturing of highly complex geometries hardly machinable with …
Research progress on powder bed fusion additive manufacturing of TiAl-based alloy
3.1 Principle of powder bed additive manufacturing The LPBF process begins by spreading a layer of metal powder onto a substrate, followed by the use of a computer-controlled laser beam to scan and melt the powder, which quickly solidifies to form a sample cross-section.
The Comprehensive Guide to Laser Powder Bed …
In conclusion, the Laser Powder Bed Fusion process is a sophisticated additive manufacturing technique that relies on the careful coordination of lasers, build platforms, and powder delivery systems. Its …
Powder bed fusion additive manufacturing of Ni-based …
Metal additive manufacturing (AM) has unlocked unique opportunities for making complex Ni-based superalloy parts with reduced material waste, development costs, and production lead times. Considering the available AM methods, powder bed fusion (PBF) processes, using either laser or electron beams as high energy sources, have the potential to print …
Powder Bed Fusion Additive Manufacturing Analytical Solutions
Powder bed fusion is an additive manufacturing (AM) process where an energy source, such as a laser or electron beam, is used to fuse particulate materials such as metals, ceramic or polymers together to form a three-dimensional object. Common techniques include selective laser sintering, selective laser melting, and electron beam melting.
Laser powder bed fusion: a state-of-the-art review of the …
The Laser beam powder bed fusion (PBF-LB) Additive Manufacturing machine has twelve 1 kW lasers and a 600 × 600 × 600 mm square build environment. The NXG XII 600, according to the makers, is the fastest AM machine on the market, with build speeds twenty times quicker than a single-laser machine and technical features including …
What is Powder Bed Fusion? Process Definition and …
Powder bed fusion (PBF) is an additive manufacturing process and works on the same basic principle in that parts are formed through adding material rather than subtracting it through conventional forming …
Powder bed monitoring via digital image analysis in additive manufacturing | Journal of Intelligent Manufacturing
Due to the nature of Selective Laser Melting process, the built parts suffer from high chances of defects formation. Powders quality have a significant impact on the final attributes of SLM-manufactured items. From a processing standpoint, it is critical to ensure proper powder distribution and compaction in each layer of the powder bed, which is impacted …
Revealing particle-scale powder spreading dynamics in powder-bed-based additive manufacturing …
In the powder-bed-based additive manufacturing process, powders are spread in a thin layer and then selectively melted/sintered by a heat source or selectively joined together by a liquid binding ...
Full article: Recent progress on additive manufacturing of multi …
Laser powder bed fusion (LPBF) additive manufacturing has been advancing in the fabrication of metallic multi-material structures with intricate structures and refined …
Thermal conductivity of metal powders for powder bed additive manufacturing …
Powder thermal conductivities depend weakly on temperature from 295 K to 470 K. •. Gas-enhanced thermal conductivity is consistent with an effective medium model. The thermal conductivities of five metal powders for powder bed additive manufacturing (Inconel 718, 17-4 stainless steel, Inconel 625, Ti-6Al-4V, and 316L stainless steel) were ...
Effects of spreader geometry on powder spreading process in powder bed additive manufacturing …
Powder spreading process is to use a spreader such as blade or roller to spread powder layers for subsequent fusion in powder bed fusion additive manufacturing. In this work, the effects of various spreader geometries on powder spreading are examined by discrete element method (DEM).
Powder Bed Fusion | Additive Manufacturing Research …
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 …
Assessing powder processability and melting behavior in powder-bed fusion additive manufacturing …
Spreading behavior of Ti 48Al 2Cr 2Nb powders in powder bed fusion additive manufacturing process: Experimental and discrete element method study Addit. Manuf., 49 (2022), Article 102489, 10.1016/j.addma.2021.102489 View PDF View article View in Scopus ...
Powder Bed Fusion | Additive Manufacturing Research Group
A platform lowers the model accordingly. Powder Bed Fusion – Step by Step. A layer, typically 0.1mm thick of material is spread over the build platform. A laser fuses the first layer or first cross section of the model. A new layer of powder is spread across the previous layer using a roller. Further layers or cross sections are fused and …
Materials | Free Full-Text | Characterization of …
This research aims at evaluating the characteristics of the 5 wt.% B4C/Ti-6Al-4V composite powder feedstock prepared by two different categories of mechanical mixing for powder bed fusion (PBF) …
Alloy design for laser powder bed fusion additive manufacturing…
Additive manufacturing (AM), building objects layer by layer directly from three-dimensional (3D) data [ 1 ], has been regarded as a revolutionary manufacturing technology since it was invented in the 1980s [ 2 ]. The early studies primarily focused on polymers and AM was used for rapid prototyping applications.
About powder bed additive manufacturing
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