Process Development for Tip Repair of Complex Shaped Turbine Blades with IN718

Ünal-Saewe, Talu; Gahn, Lukas; Kittel, Jochen; Gasser, Andrés; Schleifenbaum, Johannes Henrich

doi:10.1016/j.promfg.2020.04.114

Cited by 36 publications

(9 citation statements)

References 10 publications

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“…On the other hand, Montero et al [ 19 ] used the selective laser melting (SLM) technology to re-design the valve cover, but without using the original material. A few interesting examples demonstrating the potential of implementation of the AM techniques are described in [ 20 , 21 , 22 , 23 ]. One of the analyzed works conducted by S.K.…”

Section: Introductionmentioning

confidence: 99%

Regeneration of the Damaged Parts with the Use of Metal Additive Manufacturing—Case Study

Sawczuk,

Kluczyński,

Sarzyński

et al. 2023

Materials

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The paper shows the results related to regeneration possibilities analysis of a damaged slider removed from a hydraulic splitter that was repaired using additive manufacturing (AM), laser-based powder bed fusion of metals (PBF-LB/M) technology. The results demonstrate the high quality of the connection zone between the original part and the regenerated zone. The hardness measurement conducted at the interface between the two materials indicated a significant increase equal to 35% by using the M300 maraging steel, as a material for regeneration. Additionally, the use of digital image correlation (DIC) technology enabled the identification of the area where the largest deformation occurred during the tensile test, which was out of the connection zone between the two materials.

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Section: Introductionmentioning

confidence: 99%

Regeneration of the Damaged Parts with the Use of Metal Additive Manufacturing—Case Study

Sawczuk,

Kluczyński,

Sarzyński

et al. 2023

Materials

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“…Researchers and industry continue to be interested in laser-based metal deposition techniques, because of their unique advantages in applications such as surface coating and quick manufacturing compared with the larger-grained clads produced by conventional build-up techniques [5,6]. This technology has also shown a good performance in coating, part repair and manufacturing productivity [7][8][9][10]. The additive nature of laser cladding combined with the unique laser beam characteristics has given this approach several distinct advantages, including a limited heat affected zone.…”

Section: Introductionmentioning

confidence: 99%

Nozzle Designs in Powder-Based Direct Laser Deposition: A Review

Güner

Bidare

Jiménez

et al. 2022

Int. J. Precis. Eng. Manuf.

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Laser-based Direct Energy Deposition (L-DED) is one of the most commonly employed metal additive manufacturing technologies. In L-DED, a laser beam is employed as a heat source to melt the metal powder that is deposited on a substrate layer by layer for the generation of a desired component. The powder is commonly fed through a nozzle into the molten pool by means of a carrier gas and therefore, a nozzle design that ensures optimal deposition of the material is of critical importance. Additionally, its design also affects the powder and gas flows that arise in the nozzle and during the deposition. This, in turn will affect the characteristics of the generated clad and the performance of the whole deposition. Therefore, an optimization of deposition nozzle geometry can be as important as the controlling of deposition process parameters in order to obtain best component qualities. In this context, the present review work is aimed at analysing the different nozzle designs employed in powder-based L-DED processes and the influence of different geometrical features and configurations on the resulting powder and gas flows. Concretely, the main characteristics of each design, their advantages and their possible shortcomings are analysed in detail. Additionally, a review of most relevant numerical models employed during the development of new and optimised nozzle designs are also addressed.

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“…Some researchers investigate how to perform repairs on more damaged blades. This involves a complex process of adding material through a laser welding process and then using different methods to restore the original nominal shape [22][23][24][25][26]. Further research is investigating Fig.…”

Section: Introductionmentioning

confidence: 99%