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laser powder-bed fusion

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Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006621
EISBN: 978-1-62708-290-7
...-atomized laser-powder bed fusion (LPBF) parts at various energy densities. The results from the study showed the strong dependence of densification, mechanical properties, and microstructures on temperature, pressure, and time during the HIP cycle. The density, ultimate tensile strength, hardness and yield...
Series: ASM Handbook
Volume: 24A
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.hb.v24A.a0006955
EISBN: 978-1-62708-439-0
... Abstract Part quality in additive manufacturing (AM) is highly dependent on process control, but there is a lack of adequate AM control methods and standards. Laser powder-bed fusion (L-PBF) is one of the most-used metal AM techniques. This article focuses on the following laser control...
Series: ASM Handbook
Volume: 24A
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.hb.v24A.a0006957
EISBN: 978-1-62708-439-0
... presents two key opportunities for AM related to automotive applications, specifically within the realm of metal laser powder-bed fusion: alloys and product designs capable of high throughput. The article also presents the general methodology of alloy development for automotive AM. It provides examples...
Series: ASM Handbook
Volume: 24A
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.hb.v24A.a0006985
EISBN: 978-1-62708-439-0
... of the common defects that occur in laser powder bed fusion (L-PBF) components, mitigation strategies, and their impact on fatigue failure. It summarizes the fatigue properties of three commonly studied structural alloys, namely aluminum alloy, titanium alloy, and nickel-base superalloy. additively...
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Published: 15 June 2020
Fig. 1 Schematics of laser powder bed fusion (LPBF) processes. (a) Selective laser melting. Source: Ref 2 . (b) Selective laser sintering. Source: Ref 18 More
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Published: 12 September 2022
Fig. 2 Schematic of laser powder-bed fusion, also known as selective laser melting. Reprinted from Ref 11 with permission from Wiley More
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Published: 15 June 2020
Fig. 5 Microstructure of laser powder bed fusion build showing distinct nonisotropic weld patterns. Source: Ref 37 More
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Published: 15 June 2020
Fig. 2 Dynamic x-ray images of a laser powder-bed fusion process for Ti-6Al-4V, where a keyhole pore is formed upon increasing the laser power used for processing. Scale bars are 200 μm. Source: Ref 19 More
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Published: 15 June 2020
Fig. 7 Microstructure of (a) as-printed laser powder-bed fusion Ti-6Al-4V, (b) heat treated for 2 h at 800 °C (1470 °F), and (c) processed by hot isostatic pressing for 4 h at 950 °C (1740 °F). More coarsening occurs at higher temperatures. Source: Ref 29 More
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Published: 15 June 2020
Fig. 5 Microstructures of Cu-1.3Cr fabricated with laser powder-bed fusion. (a) As-fabricated condition. (b) Limited grain coarsening after direct aging at 450 °C (840 °F). Source: Ref 61 More
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Published: 15 June 2020
Fig. 7 Microstructures of (a) laser powder-bed fusion and (b) wrought Cu7Ni2SiCr More
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Published: 15 June 2020
Fig. 21 Schematic illustrating a typical laser powder-bed fusion system More
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Published: 15 June 2020
Fig. 24 Processing space for copper and copper alloys using laser powder-bed fusion. For clarity, only relative densities above 95% without reported swelling are displayed. More
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Published: 15 June 2020
Fig. 38 Photograph of injection molding tooling made with laser powder-bed fusion using Cu2.4Ni0.4Cr0.7Si (Hovadur K220) copper alloy. Source: Ref 69 More
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Published: 15 June 2020
Fig. 60 Reported room-temperature fatigue properties for laser powder-bed fusion (LPBF) Cu7.2Ni1.8Si1Cr compared to standard hot isostatic pressed and extruded material. Source: Ref 67 More
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Published: 30 August 2021
Fig. 10 Microstructure of laser powder-bed fusion build showing distinct nonisotropic weld patterns More
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Published: 12 September 2022
Fig. 1 (a) Laser powder-bed-fusion-printed 316L stainless steel fracture fixation plates on a build plate; (b) and (c) Fracture fixation plate shown with 3D-printed polymer jig used for screw hole alignment. Source: Ref 27 More
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Published: 30 June 2023
Fig. 7 Microstructure of Ti-6Al-4V fabricated by laser powder-bed fusion. BD, building direction. Source: Ref 64 More
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Published: 30 June 2023
Fig. 9 Cellular automaton predictions of the laser powder-bed fusion process. Courtesy of TWI More
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Published: 30 June 2023
Fig. 26 Power factor versus specific point energy curve of laser powder-bed fusion (L-PBF) parameters for manufacturing near fully dense Al-Si10-Mg components. Source: Ref 22 More