An operando synchrotron study on the effect of wire melting state on solidification microstructures of Inconel 718 in wire-laser directed energy deposition

Gao, Lin; Chuang, Andrew C.; Kenesei, Peter; Ren, Zhongshu; Balderson, Lilly; Sun, Tao

doi:10.1016/j.ijmachtools.2023.104089

Cited by 9 publications

(4 citation statements)

References 30 publications

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“…Similar to this study, Gao et al utilized Flow 3D to examine and compare the thermal conditions associated with bidirectional and wiggle deposition patterns. The simulation revealed that in the case of wiggle deposition, the laser absorption is more symmetrical compared to the former strategy, resulting in a more dynamic flow within the melt pool [73,118].…”

Section: Modeling and Predicting W-lded Processmentioning

confidence: 96%

“…Despite the growing interest in W-LDED of various materials, it is evident that the Different types of lasers have been used in the literature, with diode, Nd: YAG, CO 2 , and fiber lasers being the most predominant ones [66,[71][72][73]. The findings, once again, emphasize the importance of selecting appropriate laser types based on material characteristics for effective and economical processes.…”

Section: Laser Characteristics 221 Laser Typesmentioning

confidence: 99%

“…Coaxial W-LDED represents a valuable enhancement to the existing processes, offering a directional independent method with high deposition rates and precision [72,118,119]. Unlike lateral deposition heads, the use of concentric or coaxial heads (Figure 9a) eliminates the need for table or head rotation, allowing material deposition in virtually any direction [73,89,120]. Specialized optics have been developed to shape the laser beam in a way that enables wire feeding through the center of the beam to ensure a distribution of laser radiation over the wire [121][122][123].…”

Section: Coaxial Wire Feedingmentioning

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: Modeling and Predicting W-lded Processmentioning

confidence: 96%

Section: Laser Characteristics 221 Laser Typesmentioning

confidence: 99%

Section: Coaxial Wire Feedingmentioning

confidence: 99%

See 1 more Smart Citation

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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In-situ characterization of defect formation and elimination dynamics during electron beam melting using high-speed X-ray imaging

Yuan,

Escano,

Clark

et al. 2024

Additive Manufacturing Letters

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An operando synchrotron study on the effect of wire melting state on solidification microstructures of Inconel 718 in wire-laser directed energy deposition

Cited by 9 publications

References 30 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

In-situ characterization of defect formation and elimination dynamics during electron beam melting using high-speed X-ray imaging

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