Repair and restoration of engineering components by laser directed energy deposition

Aprilia, Aprilia; Wu, Naien; Zhou, Wei

doi:10.1016/j.matpr.2022.09.022

Cited by 11 publications

(6 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While for the PBF process, powder is sprayed onto the platform before the printing, different from the DED process for which metal powders are injected into the molten pool through nozzles simultaneously with the emission of laser energy. This feature enables DED process the ability for repairing of worn components [79], and manufacturing of functionally graded materials [80]. Figure 13 gives the schematic diagram of DED process.…”

Section: Directed Energy Depositionmentioning

confidence: 99%

Application of additive manufacturing in automobile industry: a mini review

Yang,

Li,

Liu

et al. 2024

Preprint

View full text Add to dashboard Cite

Automobile industry is recognized as one of the most influential sectors shaping the global economies, societies, and individual lifestyles. Therefore, fierce competitions among different companies are continuously undergoing, and innovations deserve special attention to improve the competitiveness. In the past several years, additive manufacturing (AM) is emerging as an innovative technology in the applications of automobile industry with significant advantages over traditional techniques. As a result, increasing attention has been attracted to combining AM technology with the development of automobile industry. Currently, many automobile players are optimizing their industrial layout by incorporating with innovative AM techniques, and meanwhile, many research progresses have been achieved to meet the market demand. This article aims at presenting a timely review to conclude the recent advances in the application of AM techniques in automobile industry, focusing on the available AM techniques, printable materials, and the industry applications. The future research opportunities and challenges are also outlooked. Hopefully, this work can be useful to the related researchers, as well as the game players in the industry of this field.

show abstract

Section: Directed Energy Depositionmentioning

confidence: 99%

Application of additive manufacturing in automobile industry: a mini review

Yang,

Li,

Liu

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…Hence, the repair of damaged components using suitable procedures has emerged as a novel study area [4]. Nevertheless, conventional repair techniques, including metal inert gas welding, tungsten inert gas welding, electroplating brushing, and laser cladding, exhibit certain limitations, such as vulnerability to fracture, insufficient interface bonding, nonuniform structures, and suboptimal characteristics [5,6]. Laser beam fusion deposition (LBFD) is an emerging repair technique that integrates the benefits of laser cladding with forming methodologies.…”

Section: Introductionmentioning

confidence: 99%

“…The LBFD method has effectively addressed issues encountered in conventional repair procedures in terms of shape repair, tissue performance, and mechanical property recovery. Furthermore, the repaired zone (RZ) exhibits mechanical characteristics that are equivalent or even superior to those of the original material [6].…”

Section: Introductionmentioning

confidence: 99%

Physical Simulation of Mold Steels Repaired by Laser Beam Fusion Deposition

de Jesus,

Ferreira,

Capela

et al. 2024

Metals

View full text Add to dashboard Cite

In the present work, a study of the fatigue strength of two materials widely used in the production of molds, namely, the AISI P20 and AISI H13 steels, is presented. The tests were performed at a constant amplitude with a stress ratio of R = 0 using samples where U-shaped notches were filled with laser beam fusion deposition. Three different sets of deposition parameters for each material were analyzed. Fatigue strength results are presented as S-N curves obtained for filled and non-filled materials. In addition to the assessment of the fatigue strength, metallography, hardness, and the fracture surface of the specimens tested were also evaluated. In general, a high number of metallurgic defects was detected, and consequently, a decrease in the mechanical properties of the materials was observed, especially the fatigue strength. However, the parameter optimization of the repairing laser process produced repaired zones with good metallurgical quality, leading to higher fatigue strength in both of the high-strength steels analyzed.

show abstract

“…WAAM is a material build-up process whereby metal wires are used as the material feedstock and an electric arc energy source is used for the fusion process [ 14 ]. It is a configuration of directed energy deposition (DED) technology that is both cost-effective and time-efficient [ 15 ]. It is an extended application of arc welding technology in building components using a layer-by-layer strategy [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

Decarburization of Wire-Arc Additively Manufactured ER70S-6 Steel

et al. 2023

Self Cite

View full text Add to dashboard Cite

Decarburization is an unwanted carbon-loss phenomenon on the surfaces of a material when they are exposed to oxidizing environments at elevated temperatures. Decarburization of steels after heat treatment has been widely studied and reported. However, up to now, there has not been any systematic study on the decarburization of additively manufactured parts. Wire-arc additive manufacturing (WAAM) is an efficient additive manufacturing process for producing large engineering parts. As the parts produced by WAAM are usually large in size, the use of a vacuum environment to prevent decarburization is not always feasible. Therefore, there is a need to study the decarburization of WAAM-produced parts, especially after the heat treatment processes. This study investigated the decarburization of a WAAM-produced ER70S-6 steel using both the as-printed material and samples heat-treated at different temperatures (800 °C, 850 °C, 900 °C, and 950 °C) for different durations (30 min, 60 min, and 90 min). Furthermore, numerical simulation was carried out using Thermo-Calc computational software to predict the carbon concentration profiles of the steel during the heat treatment processes. Decarburization was found to occur not only in the heat-treated samples but also on the surfaces of the as-printed parts (despite the use of Ar for shielding). The decarburization depth was found to increase with an increase in heat treatment temperature or duration. The part heat-treated at the lowest temperature of 800 °C for merely 30 min was observed to have a large decarburization depth of about 200 μm. For the same heating duration of 30 min, an increase in temperature of 150 °C to 950 °C increased the decarburization depth drastically by 150% to 500 μm. This study serves well to demonstrate the need for further study to control or minimize decarburization for the purpose of ensuring the quality and reliability of additively manufactured engineering components.

show abstract

Repair and restoration of engineering components by laser directed energy deposition

Cited by 11 publications

References 13 publications

Application of additive manufacturing in automobile industry: a mini review

Application of additive manufacturing in automobile industry: a mini review

Physical Simulation of Mold Steels Repaired by Laser Beam Fusion Deposition

Decarburization of Wire-Arc Additively Manufactured ER70S-6 Steel

Contact Info

Product

Resources

About