Microstructure, micro-hardness and tensile properties of Ti6Al4V manufactured by high layer-thickness wire-feed multi-laser directed energy deposition

Singh, Sapam Ningthemba; Deoghare, Ashish B.

doi:10.1016/j.matlet.2023.134207

Cited by 3 publications

(4 citation statements)

References 15 publications

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“…Nickel et al noted that unidirectional deposition led to distortion, while two-dimensional strategies minimized distortions due to a more uniform heat flow [183]. Singh et al suggested depositing the initial line on the periphery of the profile and implementing a bidirectional path with 45 • scanning patterns and a 90 • orientation change in successive layers to prevent excessive material outflow at the edges, thereby improving dimensional accuracy [184]. Pujana et al employed the same strategy, which successfully fabricated 3D geometries [89].…”

Section: Scanning Strategymentioning

confidence: 99%

“…depositing the initial line on the periphery of the profile and implementing a bidirectional path with 45° scanning patterns and a 90° orientation change in successive layers to prevent excessive material outflow at the edges, thereby improving dimensional accuracy [184]. Pujana et al employed the same strategy, which successfully fabricated 3D geometries [89].…”

Section: Scanning Strategymentioning

confidence: 99%

“…To address this issue, Akbari et al emphasized the importance of preheating the substrate to slow down the cooling rate during the initial layer deposition [56]. Several studies have shown that preheating the substrate results in a more depositing the initial line on the periphery of the profile and implementing a bidirectional path with 45° scanning patterns and a 90° orientation change in successive layers to prevent excessive material outflow at the edges, thereby improving dimensional accuracy [184]. Pujana et al employed the same strategy, which successfully fabricated 3D geometries [89].…”

Section: Heating the Substratementioning

confidence: 99%

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A Review on Wire-Laser Directed Energy Deposition: Parameter Control, Process Stability, and Future Research Paths

Ghanadi,

Pasebani

2024

JMMP

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Wire-laser directed energy deposition has emerged as a transformative technology in metal additive manufacturing, offering high material deposition efficiency and promoting a cleaner process environment compared to powder processes. This technique has gained attention across diverse industries due to its ability to expedite production and facilitate the repair or replication of valuable components. This work reviews the state-of-the-art in wire-laser directed energy deposition to gain a clear understanding of key process variables and identify challenges affecting process stability. Furthermore, this paper explores modeling and monitoring methods utilized in the literature to enhance the final quality of fabricated parts, thereby minimizing the need for repeated experiments, and reducing material waste. By reviewing existing literature, this paper contributes to advancing the current understanding of wire-laser directed energy deposition technology. It highlights the gaps in the literature while underscoring research needs in wire-laser directed energy deposition.

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Section: Scanning Strategymentioning

confidence: 99%

Section: Scanning Strategymentioning

confidence: 99%

Section: Heating the Substratementioning

confidence: 99%

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A Review on Wire-Laser Directed Energy Deposition: Parameter Control, Process Stability, and Future Research Paths

Ghanadi,

Pasebani

2024

JMMP

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“…The powder feeding, laser cladding laser energy absorption rate is high, easy for automating the control, but the powder utilization rate is not high, and the quality of the powder requirements are high. Laser wire melting [ 19 ] uses metal wire as the material, and compared with powder as raw material, it has the advantages of high processing efficiency, high material utilization, a large degree of freedom in production, good surface-forming quality, high production efficiency, no powder pollution, and so on, and it has been widely studied [ 20 , 21 , 22 , 23 ]. In addition to the laser melting of pure metal wires, some researchers have also carried out laser melting studies on core-spun wires [ 24 ].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Wear Resistance of Si-TC4 Composite Coatings by High-Speed Wire-Powder Laser Cladding

Men,

Sun,

et al. 2024

Materials

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The hardness and wear resistance of the surface of TC4 titanium alloy, which is widely used in aerospace and other fields, need to be improved urgently. Considering the economy, environmental friendliness, and high efficiency, Si-reinforced Ti-based composite coatings were deposited on the TC4 surface by the high-speed wire-powder laser cladding method, which combines the paraxial feeding of TC4 wires with the coaxial feeding of Si powders. The microstructures and wear resistance of the coatings were analyzed using X-ray diffraction (XRD), scanning electron microscopy (SEM), Vickers hardness tester, and friction and wear tester. The results indicate that the primary composition of the coating consisted of α-Ti and Ti5Si3. The microstructure of the coating underwent a notable transformation process from dendritic to petal, bar, and block shapes as the powder feeding speed increased. The hardness of the composite coatings increased with the increasing Si powder feeding rate, and the average hardness of the composite coating was 909HV0.2 when the feeding rate reached 13.53 g/min. The enhancement of the microhardness of the coatings can be attributed primarily to the reinforcing effect of the second phase generated by Ti5Si3 in various forms within the coatings. As the powder feeding speed increased, the wear resistance initially improved before deteriorating. The optimal wear resistance of the coating was achieved at a powder feeding rate of 6.88 g/min (wear loss of 2.55 mg and friction coefficient of 0.12). The main wear mechanism for coatings was abrasive wear.

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Eutectic high-entropy alloys and their applications in materials processing engineering: A review

Liu,

Li,

Lin

et al. 2024

Journal of Materials Science & Technology

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Microstructure, micro-hardness and tensile properties of Ti6Al4V manufactured by high layer-thickness wire-feed multi-laser directed energy deposition

Cited by 3 publications

References 15 publications

A Review on Wire-Laser Directed Energy Deposition: Parameter Control, Process Stability, and Future Research Paths

A Review on Wire-Laser Directed Energy Deposition: Parameter Control, Process Stability, and Future Research Paths

Microstructure and Wear Resistance of Si-TC4 Composite Coatings by High-Speed Wire-Powder Laser Cladding

Eutectic high-entropy alloys and their applications in materials processing engineering: A review

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