Additive manufacturing of Cu–10Sn bronze

Scudino, Sergio; Unterdörfer, C.; Prashanth, K.G.; Attar, Hooyar; Ellendt, N.; Uhlenwinkel, Volker; Eckert, J.

doi:10.1016/j.matlet.2015.05.076

Cited by 225 publications

(102 citation statements)

References 15 publications

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“…[32] This reduces the coupling of the laser-energy in the metal-powder, leading to incomplete melting of the single layers during the building-process and causing pores. [32,38] The system CuCrZr features a compromise between an appropriate absorption coefficient of 37% [32] and a high thermal conductivity (310 W mK À1 [39] ), making CuCrZr an attractive material for selective laser melting. [32,33] The absorption coefficient can be increased using Cu-alloys, but even low amounts of alloy elements may cause a significant decrease of thermal and electrical conductivity.…”

Section: Characterization Of Cucrzr-partsmentioning

confidence: 99%

Laser Powder Bed Fusion – Materials Issues and Optimized Processing Parameters for Tool steels, AlSiMg‐ and CuCrZr‐Alloys

et al. 2017

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Laser Powder Bed Fusion (L-PBF) is the main technology for additive manufacturing of metallic components and is primarily used for rapid prototyping and tooling in cases with very complex geometry or lightweight design and small quantities. There are manifold influencing parameters, which need to be optimized in order to build components with suitable properties. The paper deals with three distinct application fields, like the development of new tool steel grades for injection molds, light weight design using aluminum alloys with optimized post-weld heat treatment as well as production of copper alloys without porosity. The most sensitive process parameters are displayed and the multilayered components are characterized using light and high-resolution microscopy as well as mechanical testing.

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Section: Characterization Of Cucrzr-partsmentioning

confidence: 99%

Laser Powder Bed Fusion – Materials Issues and Optimized Processing Parameters for Tool steels, AlSiMg‐ and CuCrZr‐Alloys

et al. 2017

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“…Selective laser melting (SLM) is an additive manufacturing process that can produce parts with complex dimensions combined with fine microstructures, due to the high solidification rates realized during the process [1][2][3][4]. Materials fabrication using SLM requires a significant amount of research on developing the process parameters, which in turn depend on the physical and chemical properties of the metal/alloy to be processed and the interaction of the laser with the material [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Is the energy density a reliable parameter for materials synthesis by selective laser melting?

Prashanth

Scudino

Maity

et al. 2017

Materials Research Letters

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326

104

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The effective fabrication of materials using selective laser melting depends on the process parameters. Here, we analyse the suitability of the energy density to represent the energy transferred to the powder bed, which is effectively used to melt the particles and to produce the bulk specimens. By properly varying laser power and speed in order to process the powder at constant energy density, we show that the equation currently used to calculate the energy density gives only an approximate estimation and that hatch parameters and material properties should be considered to correctly evaluate the energy density. IMPACT STATEMENTAl-12Si SLM samples were fabricated at constant energy density. The laser power and laser scan speed combination variation was used to demonstrate the significant changes needed with energy density equation. ARTICLE HISTORY

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“…[1][2][3][4] As the name suggests, a laser source(s) is used to melt the powder layers selectively as dictated by a computer model (generally a computer aided design-CAD file or a computed tomogram-3D CT scan). The SLM process offers a high degree of freedom and theoretically parts with any geometry (complex shapes and structures) and can be produced without restrictions, which are otherwise difficult or nearly impossible to produce using conventional manufacturing processes.…”

Section: Introductionmentioning

confidence: 99%

Processing of Al–12Si–TNM composites by selective laser melting and evaluation of compressive and wear properties

et al. 2015

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Al-12Si (80 vol%)-Ti 52.4 Al 42.2 Nb 4.4 Mo 0.9 B 0.06 (at.%) (TNM) composites were successfully produced by the selective laser melting (SLM). Detailed structural and microstructural analysis shows the formation of the Al 6 MoTi intermetallic phase due to the reaction of the TNM reinforcement with the Al-12Si matrix during SLM. Compression tests reveal that the composites exhibit significantly improved properties (;140 and ;160 MPa higher yield and ultimate compressive strengths, respectively) compared with the Al-12Si matrix. However, the samples break at ;6% total strain under compression, thus showing a reduced plasticity of the composites. Sliding wear tests were carried out for both the Al-12Si matrix and the Al-12Si-TNM composites. The composites perform better under sliding wear conditions and the wear rate increases with increasing loads. At high loads, the wear takes place at three different rates and the wear rate decreases with increasing experiment duration.

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Additive manufacturing of Cu–10Sn bronze

Cited by 225 publications

References 15 publications

Laser Powder Bed Fusion – Materials Issues and Optimized Processing Parameters for Tool steels, AlSiMg‐ and CuCrZr‐Alloys

Laser Powder Bed Fusion – Materials Issues and Optimized Processing Parameters for Tool steels, AlSiMg‐ and CuCrZr‐Alloys

Is the energy density a reliable parameter for materials synthesis by selective laser melting?

Processing of Al–12Si–TNM composites by selective laser melting and evaluation of compressive and wear properties

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