Study on Selective Laser Melting of Copper

Benedetti, L.; Comelli, Cleiton André; Ahrens, Carlos Henrique

doi:10.26678/abcm.cobef2017.cof2017-0148

Cited by 4 publications

(3 citation statements)

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“…4). Although literature have reported undesirable results on Cu solidification [10,29], after adjusting 3DMMLPBF processing parameters (to raise the laser energy density), the Cu powder has been reasonably solidified and bonded to the IN718 melted powder as well IN718 substrate (with a porosity of about 0.356 ± 0.05 %).…”

Section: Morphological Characterizationmentioning

confidence: 99%

“…However, its reflectivity and thermal conductivity have been an obstacle when processing this powder by laser powder bed fusion. Carlos et al [10] reported the production of Cu specimens by LPBF with more than 50% porosity, with poor consolidation and low mechanical strength. On the other hand, Loi et al [11] produced high-density Cu parts (95%) with complex shapes by laser powder bed fusion.…”

Section: Introductionmentioning

confidence: 99%

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Inconel 718–copper parts fabricated by 3D multi-material laser powder bed fusion: a novel technological and designing approach for rocket engine

Marques

Cunha

Gasik

et al. 2022

Int J Adv Manuf Technol

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A home-made 3D Multi-Material Laser Powder Bed Fusion (3DMMLPBF) system was used to produce novel multimaterial Inconel 718 (IN718) -Copper (Cu) parts with potential to be applied in rocket engines. This innovative approach combines IN718 high strength and Cu high thermal conductivity in a single part, fabricated at once.The main goal of this study was to validate the developed multi-material powder-based manufacturing technology as well to access both individual material zones and interface transition zone features in terms of metallurgical bonding and mechanical behavior. The multi-material IN718 -Cu specimens revealed a strong metallurgical bonding with a thin gradual chemical transition between two materials. Moreover, no significant pores, cracks or other defects were observed on both individual and interface zones as well no undesirable powders from the previous layers. IN718 hardness results were in agreement with literature (about 344 HV) and the results obtained for Cu (about 126 HV). The disparity on the hardness results between the IN718 and Cu is coherent with the thin diffusion zone reflected in the chemical compositional analysis. This multi-material material IN718 -Cu solution seems to be a promising approach since the two materials have a well-defined interface with no substantial defects, this, both IN718 and Cu are capable to maintain its most important individual properties, high strength and high thermal conductivity, respectively.

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Section: Morphological Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Inconel 718–copper parts fabricated by 3D multi-material laser powder bed fusion: a novel technological and designing approach for rocket engine

Marques

Cunha

Gasik

et al. 2022

Int J Adv Manuf Technol

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show abstract

“…As a matter of fact, traditional manufacturing processes for the complex components are characterised by high production costs as well as complex and time-consuming post-processing steps. The design of heat exchange components aims to minimise their size while using optimised thin fins to increase the surface area and the heat transfer rate between the heat exchanger surface and the surroundings [20]. In this context, AM processes results are attractive thanks to the possibility of producing topologically optimised geometries layer by layer, reducing the period of manufacturing and tooling requirements [2,18].…”

Section: Introductionmentioning

confidence: 99%

A feasibility study to improve the processability of pure copper produced via laser powder bed fusion process

Saboori

2023

Materials Research Proceedings

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Abstract. Additive Manufacturing (AM) refers to a family of layer-upon-layer building technologies capable of producing geometrically intricate parts in a single step. Today, the processability of many materials through AM is under development. One of the most interesting studies is the production of copper parts via laser-based technologies. Unluckily, mainly due to the high thermal conductivity and reflectivity of copper, its processability through AM processes is particularly challenging. Thus, in this research, a new material-based solution is proposed to improve the processability of copper through laser powder bed fusion. Therefore, a single scan track analysis is performed on pure copper and mixtures of copper/graphite. The outcomes show that adding graphite could increase copper's laser absorption and processability.

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Selective laser melting (SLM) of pure copper using 515-nm green laser: from single track analysis to mechanical and electrical characterization

Domine,

Verdy,

Penaud

et al. 2023

Int J Adv Manuf Technol

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Study on Selective Laser Melting of Copper

Cited by 4 publications

References 0 publications

Inconel 718–copper parts fabricated by 3D multi-material laser powder bed fusion: a novel technological and designing approach for rocket engine

Inconel 718–copper parts fabricated by 3D multi-material laser powder bed fusion: a novel technological and designing approach for rocket engine

A feasibility study to improve the processability of pure copper produced via laser powder bed fusion process

Selective laser melting (SLM) of pure copper using 515-nm green laser: from single track analysis to mechanical and electrical characterization

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