Design of next‐generation alloys for additive manufacturing

Gokuldoss, Prashanth Konda

doi:10.1002/mdp2.50

Cited by 17 publications

(11 citation statements)

References 31 publications

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“…Many optimization methods for materials science are based on metaheuristic algorithms such as mono-objective or multiobjective genetic algorithms [16][17][18][19]. This study aims to apply this method for additive manufacturing of aluminum alloys, as proposed elsewhere [20][21][22] for steels or Ni-based alloys. The final objective is then to design a new aluminum alloys exhibiting good mechanical properties and avoiding hot cracking during the LPBF process.…”

Section: Introductionmentioning

confidence: 99%

Computational design of a crack-free aluminum alloy for additive manufacturing

Dreano

Favre

Desrayaud

et al. 2022

Additive Manufacturing

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Section: Introductionmentioning

confidence: 99%

Computational design of a crack-free aluminum alloy for additive manufacturing

Dreano

Favre

Desrayaud

et al. 2022

Additive Manufacturing

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“…In the SLM process, a beam scans over a powder bed and selectively melts powder particles to form 3D objects layer by layer according to the layout in a computer-aided design fle [17][18][19][20][21]. Te process of SLM has been found appropriate for several materials, especially for the metal alloys used in engineering [22][23][24][25]. It is agreed that the SLM technology has signifcant popularity as a speedy prototyping technique with a delicate microstructure because of the high cooling rate which could lead to yielding a solidifcation process that is non-equilibrium.…”

Section: Introductionmentioning

confidence: 99%

Effect of SiC Addition on Microhardness and Relative Density during Selective Laser Melting of 316L Stainless Steel

Hadi

Taha

2022

Journal of Engineering

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The utilization of 316L stainless steel has been very common in marine, automotive, architectural, and biomedical applications due to its adequate corrosion resistance to cracks after the completion of welding process. However, there has been ongoing attempts to investigate the potential enhancement in the strength and durability of 316L stainless steel by reinforcing it with silicon carbide (SiC). The present work adopts the selective laser melting (SLM) technique to fabricate SiC-reinforced 316L steel to boost its microhardness and strength properties. The methodology involved the addition of 1% wt. silicon carbide with particle sizes <40 μm to reinforce the stainless steel matrix. An SLM metal printing machine equipped with a continuous wave of 300 W fiber laser is employed to form the specimens. To measure the properties of the final product, EDX, XRD, FESEM, and universal tensile test machines have been used. The maximum value of 296 HV was obtained for a 1% volume of SiC compared to the 285 HV microhardness of pure stainless steel 316L. FESEM examination showed that the SiC microparticles were dissolved completely and they were randomly distributed in the melting basin. The samples were dissolved entirely, and the best porosity was obtained at 0.4% with influential parameters of 200 W laser power, 70 µm hatching distance, 30 µm layer thickness, and 700 mm/s velocities. The results also revealed that the microhardness at these parameters is the best compared to the samples produced with different values. The volumetric energy density was also considered. The findings can be informative to the researchers and manufacturers interested in 316L steel industry.

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“…Over the last decade, 3D printers have become more accessible, versatile, and cost‐effective, even for personal use. Furthermore, various materials are available and suitable for these technologies, starting from polymers, to metals, ceramics, or even composites 3–6 . As these technologies have recently entered the market, the majority of materials still requires a proper characterization and testing 7–9 .…”

Section: Introductionmentioning

confidence: 99%

Post‐processing technologies of copper–polylactic acid composites obtained by 3D printing fused deposition modeling

Ambruș

Muntean

Kazamer³

et al. 2021

Mat Design & Process Comms

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The goal of the present study is to obtain a new structured material starting from a copper–polylactic acid (PLA) composite filament 3D printed using fused deposition modeling method, followed by a sintering process in vacuum atmosphere. Metal‐reinforced filaments made of 80 wt.% copper encased in an environmentally friendly, biodegradable and carbon neutral PLA binder were used as feedstock materials. The thermal stability and the melting temperature of the filaments were evaluated through thermogravimetric analysis. The printing parameters were chosen according to the producer's specifications. Furthermore, the printed samples were submitted to a two‐step sintering process in a vacuum furnace, assuring a complete removal of the polymeric material and the diffusion of the copper particles. The post‐treatment revealed a porous structured material, similar to a cellular solid. Microstructural analysis and preliminary mechanical testing show that the porosity and hardness of the end product are heavily influenced by the initial polymer content.

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Design of next‐generation alloys for additive manufacturing

Cited by 17 publications

References 31 publications

Computational design of a crack-free aluminum alloy for additive manufacturing

Computational design of a crack-free aluminum alloy for additive manufacturing

Effect of SiC Addition on Microhardness and Relative Density during Selective Laser Melting of 316L Stainless Steel

Post‐processing technologies of copper–polylactic acid composites obtained by 3D printing fused deposition modeling

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