Laser Powder Bed Fusion process is regarded as the most versatile metal additive manufacturing process, which has been proven to manufacture near net shape
Laser Powder Bed Fusion (L-PBF) builds solid metal parts using a layer-by-layer approach common to all additive manufacturing processes (Fig. 4.2 ). The process involves the key steps of machine setup, layer recoating, layer scanning, and part removal. Machine setup requires loading the L-PBF system with feedstock material in the form of
Laser powder bed fusion process is also known as Selective Laser Melting that uses a high-power laser beam to selectively melt the pre-defined contours in subsequent layers of powder. The molten metal pool rapidly solidifies by cooling [46]. Selected regions in
Metal additive manufacturing (AM) (i.e. laser-powder bed fusion (LPBF), electron beam powder bed fusion (EBPBF) and direct energy deposition (DED)) has
Kang, S. -G. et al. Green laser powder bed fusion based fabrication and rate-dependent mechanical properties of copper lattices. Mater. Des. 231, 112023 (2023). Lin, Z., Dadbakhsh, S. & Rashid, A
Laser Powder Bed Fusion (LPBF) is an Additive Manufacturing (AM) technology that can produce complex metal parts (Murphree Citation 2022). Another popular AM technology is Direct Energy Deposition (DED) where its build direction can be advantageously adjusted to minimise the amount of the 1 st layer overhang at a time
Laser Powder Bed Fusion (L-PBF) is a technique in which a layer of metal powder is deposited, melted, and solidified using a laser to create a solid layer of metal, with
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
Therefore, the ultrashort pulse laser pulse shows a huge heat source potential in the high-precision laser powder bed smelting of Al-Si alloys []. Copper as a metal with high reflectivity and high thermal conductivity (400 W/(mK)) further promotes the dissipation of heat, hinders the temperature rise and affects the shape of the molten pool
Effect of powder characteristics on production of oxide dispersion strengthened Fe 14Cr steel by laser powder bed fusion Powder Technol., 360 ( 2020 ), pp. 998 - 1005 View PDF View article View in Scopus Google Scholar
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.
Laser Powder Bed Fusion (LPBF) has become increasingly popular in various industries due to its versatility and ability to produce complex parts with high precision. In this section, we will explore its applications in aerospace, automotive, medical and dental, jewelry and art, and research and development.
Schneck et al. employed laser-powder bed fusion (LBPF) to produce a case study on multi-material injection nozzle with tool steel 1.2709 and copper alloy CW106C [Citation 27]. Severe defects were detected near the vertical bi-metallic interface, which resulted
Keywords Nickel-titanium (NiTi) Nitinol Laser powder bed fusion (PBF) Selective laser melting (SLM) Remelting Elemental powders Premix powders Laser powder bed fusion Citation Chmielewska, A., Wysocki, B.A., Gadalińska, E., MacDonald, E., Adamczyk-Cieślak, B., Dean, D. and Świeszkowski, W. (2022), "Laser powder bed fusion (LPBF)
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
With Laser Powder Bed Fusion (L-PBF), parts can be built directly from computer models or from measurements of existing components to be re-engineered,
Abstract. Laser Powder Bed Fusion (L-PBF) is a technique in which a layer of metal powder is deposited, melted, and solidified using a laser to create a solid layer of metal, with consecutive 2D layers being joined to preceding layers to build up fully solid 3D components.
Additive Fertigung mit Laser Powder Bed Fusion LPBF, Entwicklung von Prozessketten | Prozessentwicklung – Integration – Marktstudien – Beratung Video: Ein prägendes Patent - 25 Jahre metallischer 3D-Laser-Druck Eine Drohne schwebt über dem Aachener
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
3 · Laser powder bed fusion (L-PBF) involves the coupling of multiple physical fields at different scales. Capturing the dynamic flow and thermal behavior of the melt pool
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
The physics of droplet ejection under strong evaporative flow is described using simulations of the laser powder bed interactions to elucidate the experimental results. Hydrodynamic drag analysis is used to augment the single phase flow model and explain the entrainment phenomenon for 316 L stainless steel and Ti-6Al-4V powder layers.
Laser powder bed fusion (LPBF) has gradually become a "potential stock" for fast, low-cost, high-performance, and short-cycle manufacturing of difficult-to-machine metal components. It is considered to be one of the most widely used metal additive manufacturing technologies, and has been widely used in aviation, aerospace and other industrial fields.
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
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
This study demonstrates the significant effect of the recoil pressure and Marangoni convection in laser powder bed fusion (L-PBF) of 316L stainless steel. A three-dimensional high fidelity powder-scale model reveals how the strong dynamical melt flow generates pore defects, material spattering (sparking), and denudation zones.
Effect of hatch spacing and laser power on microstructure, texture, and thermomechanical properties of laser powder bed fusion (L-PBF) additively manufactured NiTi Opt Laser Technol, 149 ( 2022 ), Article 107680, 10.1016/j.optlastec.2021.107680
In Laser Powder Bed Fusion (LPBF), it is a major challenge to obtain detailed spatial information on different powder bed defects in real-time and simultaneously. Deep Learning (DL) algorithms under the field of Machine Learning (ML) have promoted the intelligent development of the powder bed defect detection method.
This document specifies the features of laser-based powder bed fusion of metals (PBF-LB/M) and provides detailed design recommendations. Some of the fundamental principles are also applicable to other additive manufacturing (AM) processes, provided that due consideration is given to process-specific features.
The scope of this study is to investigate the processability of a TNM-based powder with an Al content of 45 at.% by laser powder bed fusion, characterize the microstructural features and develop a tailored heat treatment for the as-built material to adjust a microstructure with balanced mechanical properties.
Laser powder bed fusion (LPBF) is regarded as a significant part of AM to rapidly fabricate highly individualized metallic components on demand, such as thin-walled structures and lattice-like shapes without the need for tooling and molds [22, 23].
Due to the focused laser heating on the powder bed, the L-PBF process bears risks of various defects that are brought about by its instability [184, 185]. The formation of spatters, which is an inevitable by-product of
Laser powder bed fusion (LPBF) has gained the most attention from academia and industry among metal powder–based additive manufacturing techniques.
This paper reviews state of the art laser powder bed fusion (L-PBF) manufacturing of γ′ nickel-based superalloys. L-PBF resembles welding; therefore, weld-cracking mechanisms, such as solidification, liquation, strain age, and ductility-dip cracking, may occur during L-PBF manufacturing. Spherical pores and lack-of-fusion voids are
Laser powder bed fusion (LPBF) is a leading additive manufacturing technique that utilizes a powerful laser to selectively fuse layers of metal powder,
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 powder bed fusion (LPBF) is the most adopted method for the additive manufacturing (AM) of metallic components, enabling the production of bespoke