Laser Metal Deposition of Titanium Composites: A Review

Akinlabi, Esther T.; Soliu, Ganiyat A.; Mahamood, Rasheedat M.; Akinlabi, Stephen A.; Hassan, S.; Shatalov, M. Y.; Murashkin, E. V.; Fatoba, O.S.

doi:10.1007/978-981-15-5753-8_51

Cited by 4 publications

(3 citation statements)

References 23 publications

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“…Requirement for the use of lightweight parts and structures has significantly increased in many branches of modern mechanical engineering and aircraft construction. This problem is partially solved by the use of functionally gradient materials (for example, titanium alloys) [1][2][3][4][5]. Functionally graded material is a class of modern materials with different properties depending on the characteristic microstructural size.…”

Section: Preliminary Remarksmentioning

confidence: 99%

Residual stresses calculation in a thermoelastoplastic torus after cooling

Dats

Kovalev

Murashkin

2022

J. Phys.: Conf. Ser.

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The present study deals with the boundary value problems under toroidal symmetry conditions. The residual stresses after cooling (unloading) in an elasto-plastic material are calculated. Throughout the paper the conventional Prandtl-Reuss model is generalised and used. The solution to the problem of hollow torus cooling under a temperature gradient is obtained and discussed. Analytical solutions, as an approximation of complete boundary value problem, describing residual deformations and stresses under conditions of toroidal symmetry are constructed and discussed.

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Section: Preliminary Remarksmentioning

confidence: 99%

Residual stresses calculation in a thermoelastoplastic torus after cooling

Dats

Kovalev

Murashkin

2022

J. Phys.: Conf. Ser.

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“…The metal layer is formed by scanning the processing head over the substrate and repeating this process continuously. [5][6] Owing to this process mechanism, it is possible to form a more precise and stronger metal layer than other coating methods such as thermal spraying, arc welding, and plasma powder overlay. [7] In the conventional LMD system, a laser is irradiated vertically to the substrate, and metal powder is supplied to the laser irradiation area from the surrounding area.…”

Section: Introductionmentioning

confidence: 99%

Pure copper layer coating with multibeam laser metal deposition system with blue diode lasers

Fujio,

Yoshida,

Yamamoto

et al. 2024

Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXIX

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A pure copper layer was produced on a stainless-steel type 304 substrate by using a multi-beam laser metal deposition method with blue diode lasers (B-LMD) to add the antibacterial and virus inactivation effect of pure copper on a highstrength and cost efficient material. To make a copper layer on a substrate by LMD method, beads must be formed continuously at specific intervals and each fabricated bead must be overlapped on the substrate. In this study, to fabricate a high-quality copper layer on a SS304 substrate, the effect of hatching distance (distance between each bead) was investigated. The copper layer was fabricated on the SS304 substrate with a multi-beam B-LMD method at the spot size of 233 µm varying the hatching distance. After the copper coating process, the surface roughness and cross-section of the copper layer were observed. As a result, the surface roughness became high and a large amount of voids were formed inside the layer when the hatching distance was under 150 µm. On the other hand, dilution of copper and SS304 increased as the hatching distance increased.

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“…Key additives include sulfur (for vulcanization), and ZnO, SiO 2 , and TiO 2 (for enhancing rubber's mechanical properties). For instance, the addition of TiO 2 , even in small concentrations, enhances the resistance of tire mixtures to solar UV radiation, O 3 , and other oxidizers [7]. During the pyrolysis process, metal oxides react with sulfur, forming sulfides.…”

Section: Introductionmentioning

confidence: 99%

Recycling of Low-Quality Carbon Black Produced by Tire Pyrolysis

Rikmann,

Mäeorg,

Liiv

2024

Applied Sciences

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Pyrolysis is a promising way to reuse of waste tires. However, the carbon black generated in the process is often contaminated with various pyrolysis products. This study aims to recycle low-quality recycled carbon black (rCB) from waste tire pyrolysis, addressing the challenges posed by organic residues (up to 5 wt% bituminous substances, 112.2 mg/kg PAH). This causes the agglomeration of particles and decreases the active specific surface area. Cavitational vortex milling (both wet and dry) emerges as a promising method to valorize contaminated rCB, allowing for a significant reduction in the concentration of contaminants. This novel method allows for the generation of hydrophilic and hydrophobic black pigments. In parallel experiments, low-quality rCB is incorporated into solid biofuel to enhance its calorific value. The addition of 10 wt% rCB) to peat residues significantly elevates the calorific value from 14.5 MJ/kg to 21.0 MJ/kg. However, this improvement is accompanied by notable increases in CO2 and SO2 emissions. This dual effect underscores the necessity of considering environmental consequences when utilizing recycled carbon black as a supplement to solid biofuels. The findings provide valuable insights into the potential of cavitational vortex milling for carbon black valorization and highlight the trade-offs associated with enhancing biofuel properties through the addition of rCB.

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Laser Metal Deposition of Titanium Composites: A Review

Cited by 4 publications

References 23 publications

Residual stresses calculation in a thermoelastoplastic torus after cooling

Residual stresses calculation in a thermoelastoplastic torus after cooling

Pure copper layer coating with multibeam laser metal deposition system with blue diode lasers

Recycling of Low-Quality Carbon Black Produced by Tire Pyrolysis

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