Powder bed fusion process in additive manufacturing: An overview

Singh, Rishabh Kumar; Gupta, Akash; Tripathi, Ojestez; Srivastava, Sheela; Singh, Bharat; Awasthi, Ankita; Rajput, S.K.; Sonia, Pankaj; Singhal, Piyush; Saxena, Kuldeep K.

doi:10.1016/j.matpr.2020.02.635

Cited by 146 publications

(98 citation statements)

References 37 publications

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“…Powder bed fusion is an additive manufacturing method wherein a heat source is applied to a bed of fine particles in order to bind that construction material together and form highly-detailed 3D parts [139]. The scope of this review is to consider fusion methods using lasers (SLS/SLM), electron beams (EBM) and infrared projections (MJF).…”

Section: Powder Bed Fusion Techniquesmentioning

confidence: 99%

“…However, there is a key distinction between SLS and SLM. The former works solely with plastics, whereas the latter primarily with metals [139]. The manufacturing process is of a step-wise configuration, with a layer coating of powder sprayed on after every previous bonded layer.…”

Section: Selected Laser Sintering/melting (Sls/slm)mentioning

confidence: 99%

“…This fusion method uses an electron beam as the heat source in order to fabricate both metal and plastic material formulas [139]. The powder bed is prepared similarly to the previous methods, and an electron beam is deployed from a tungsten filament and controlled via a computerized coil.…”

Section: Electron Beam Melting (Ebm)mentioning

confidence: 99%

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Additive Manufacture of Small-Scale Metamaterial Structures for Acoustic and Ultrasonic Applications

et al. 2021

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Acoustic metamaterials are large-scale materials with small-scale structures. These structures allow for unusual interaction with propagating sound and endow the large-scale material with exceptional acoustic properties not found in normal materials. However, their multi-scale nature means that the manufacture of these materials is not trivial, often requiring micron-scale resolution over centimetre length scales. In this review, we bring together a variety of acoustic metamaterial designs and separately discuss ways to create them using the latest trends in additive manufacturing. We highlight the advantages and disadvantages of different techniques that act as barriers towards the development of realisable acoustic metamaterials for practical audio and ultrasonic applications and speculate on potential future developments.

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Section: Powder Bed Fusion Techniquesmentioning

confidence: 99%

Section: Selected Laser Sintering/melting (Sls/slm)mentioning

confidence: 99%

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Additive Manufacture of Small-Scale Metamaterial Structures for Acoustic and Ultrasonic Applications

et al. 2021

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“…In recent years, research, developments, and practical applications of additive manufacturing (AM) technologies such as three-dimensional (3D) printing processes have been actively carried out [1][2][3][4][5][6]. As opposed to traditional subtractive manufacturing methodologies, AM technology is to continuously accumulate materials by adding layerby-layer and complete the 3D parts through computer-controlled technology [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Derivation of Appropriate Conditions for Additive Manufacturing Technology Using Hot-Wire Laser Method

Zhu

Nakahara

Aono³

et al. 2021

The 1st International Electronic Conference on Metallurgy and Metals

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The aim of this research was to develop a high-efficiency and high-material-use additive manufacturing technology using the hot-wire laser method. In this study, the optimization of process conditions using a combination of a high-power diode laser with a relatively large rectangular laser spot and a hot-wire system was investigated. The effects of process parameters such as laser power, process speed, and wire feeding rate (wire feeding speed/process speed) on a bead appearance and cross-sectional characteristics (e.g., effective width, effective height, maximum height, and near net shape rate) were studied in detail. The process phenomena during the multi-layer deposition were investigated by in situ observation via a high-speed camera.

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“…In contrast to subtractive and formative manufacturing methods, such as turning and casting, AM allows the building of 3D objects layer-by-layer. The classification of AM techniques has been outlined elsewhere [ 30 , 31 ]. Selective laser melting (SLM) is one of the metal powder bed fusion AM processes.…”

Section: Introductionmentioning

confidence: 99%

Slurry Erosion–Corrosion Characteristics of As-Built Ti-6Al-4V Manufactured by Selective Laser Melting

2020

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Erosion and erosion–corrosion tests of as-built Ti-6Al-4V manufactured by Selective Laser Melting were investigated using slurries composed of SiO2 sand particles and either tap water (pure water) or 3.5% NaCl solution (artificial seawater). The microhardness value of selective laser melting (SLM)ed Ti-6Al-4V alloy increased as the impact angle increased. The synergistic effect of corrosion and erosion in seawater is always higher than erosion in pure water at all impact angles. The seawater environment caused the dissolution of vanadium oxide V2O5 on the surface of SLMed Ti-6Al-4V alloy due to the presence of Cl− ions in the seawater. These findings show lower microhardness values and high mass losses under the erosion–corrosion test compared to those under the erosion test at all impact angles.

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Powder bed fusion process in additive manufacturing: An overview

Cited by 146 publications

References 37 publications

Additive Manufacture of Small-Scale Metamaterial Structures for Acoustic and Ultrasonic Applications

Additive Manufacture of Small-Scale Metamaterial Structures for Acoustic and Ultrasonic Applications

Derivation of Appropriate Conditions for Additive Manufacturing Technology Using Hot-Wire Laser Method

Slurry Erosion–Corrosion Characteristics of As-Built Ti-6Al-4V Manufactured by Selective Laser Melting

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