Rebuilding of metal components with laser cladding forming

Song, Jinlin; Deng, Qilin; Chen, Changyuan; Hu, De Jin; Li, Yongtang

doi:10.1016/j.apsusc.2005.10.025

Cited by 99 publications

(41 citation statements)

References 13 publications

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“…The DAS is measured for both the experiment and simulation results, and the results vary in the range of 6-12 lm, which agree with the results from other works. [35,41] The DAS as a function of cooling rate is given in Figure 9, showing that the DAS decreases as the cooling rate increases. In all four cases, the predicted values match well with the experimental measurement, indicating the quantitative accuracy of the CAPF model.…”

Section: B Microstructurementioning

confidence: 98%

Multiscale Modeling of Transport Phenomena and Dendritic Growth in Laser Cladding Processes

Tan

Wen

Bailey

et al. 2011

Metall Mater Trans B

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A multiscale model is developed in this article to investigate the transport phenomena and dendrite growth in the diode-laser-cladding process. A transient model with an improved levelset method is built to simulate the heat/mass transport and the dynamic evolution of the molten pool surface on the macroscale. A novel model integrating the cellular automata (CA) and phase field (PF) methods is used to simulate the dendritic growth of multicomponent alloys in the mushy zone. The multiscale model is validated against the experiments, and the predicted geometry of clad tracks and the predicted dendrite arm spacing of microstructure match reasonably well with the experimental results. The effects of the processing parameters on the track geometry and microstructure are also investigated.

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Section: B Microstructurementioning

confidence: 98%

Multiscale Modeling of Transport Phenomena and Dendritic Growth in Laser Cladding Processes

Tan

Wen

Bailey

et al. 2011

Metall Mater Trans B

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“…Hardness values of LPBF 316 L steel have been collected from our own measurements and from the literature [19,22,23]. For a comparison, hardness for 316 L steel manufactured by direct laser deposition was collected from [36,[53][54][55][56]. Hardness for conventional and nanoscale 316 L steel was found in [57][58][59].…”

Section: Mechanical Propertiesmentioning

confidence: 99%

“…This is an important observation because the primary cell spacing can be directly controlled through alterations of laser power and laser scanning speed [7]. [19,22,23,36,[53][54][55][56][57][58][59].…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Microstructure, Solidification Texture, and Thermal Stability of 316 L Stainless Steel Manufactured by Laser Powder Bed Fusion

Krakhmalev

Fredriksson

Svensson

et al. 2018

Metals

140

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This article overviews the scientific results of the microstructural features observed in 316 L stainless steel manufactured by the laser powder bed fusion (LPBF) method obtained by the authors, and discusses the results with respect to the recently published literature. Microscopic features of the LPBF microstructure, i.e., epitaxial nucleation, cellular structure, microsegregation, porosity, competitive colony growth, and solidification texture, were experimentally studied by scanning and transmission electron microscopy, diffraction methods, and atom probe tomography. The influence of laser power and laser scanning speed on the microstructure was discussed in the perspective of governing the microstructure by controlling the process parameters. It was shown that the three-dimensional (3D) zig-zag solidification texture observed in the LPBF 316 L was related to the laser scanning strategy. The thermal stability of the microstructure was investigated under isothermal annealing conditions. It was shown that the cells formed at solidification started to disappear at about 800 • C, and that this process leads to a substantial decrease in hardness. Colony boundaries, nevertheless, were quite stable, and no significant grain growth was observed after heat treatment at 1050 • C. The observed experimental results are discussed with respect to the fundamental knowledge of the solidification processes, and compared with the existing literature data.

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“…W celu określenia wpływu kąta pochylenia palnika względem napawanej powierzchni przeprowadzono próby napawania z odchyleniem palnika od pionu w zakresie 0÷45° w osi poprzecznej do osi napoiny. 3 /min, kąt pochylenia drutu względem napawanej krawędzi -20°; przygotowanie krawędzi -krawędzie proste, kąt: 90°; Proces napawania PTA: napawanie prądem stałym DC(-), elektroda nietopliwa W+ThO 2 o średnicy 1,6 mm, kąt zaostrzenia elektrody 30°, średnica dyszy plazmowej -1,7 mm, odległość dyszy od materiału napawanego -4 mm, gaz ochronny -argon o natężeniu przepływu 12 dm 3 /min, kąt pochylenia drutu względem napawanej krawędzi -20°; przygotowanie krawędzi -krawędzie proste, kąt: 90°; Materiał dodatkowy: drut proszkowy EnDOtec DO13 o średnicy 1,2 mm. Oznaczenia: * kąt odchylenia palnika od osi prostopadłej do płaszczyzny napawanej; I -natężenie prądu, U -napięcie łuku, v nap -pręd-kość napawania, v dr -prędkość podawania drutu, E -energia liniowa procesu.…”

Section: Wpływ Kąta Pochylenia Palnika Na Kształt I Jakość Napoinunclassified

“…The influence of edges preparation for surfacing on the edge padding weld quality and the mass fraction of base material in the padding weld ( Fig. 6 and 7 3 /min, kąt pochylenia drutu względem napawanej krawędzi -20°; Oznaczenia: I -natężenie prądu, U -napięcie łuku, v nap -prędkość napawania, v dr -prędkość podawania drutu, E -energia liniowa procesu, U p -udział metalu podłoża w napoinie.…”

Section: Wpływ Sposobu Przygotowania Krawędzi Na Kształt I Jakość Napoinunclassified

Napawanie krawędzi przedmiotów metodami TIG i PTA

Kik

Górka

Czupryński

et al. 2011

Przegląd Spawalnictwa

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Rebuilding of metal components with laser cladding forming

Cited by 99 publications

References 13 publications

Multiscale Modeling of Transport Phenomena and Dendritic Growth in Laser Cladding Processes

Multiscale Modeling of Transport Phenomena and Dendritic Growth in Laser Cladding Processes

Microstructure, Solidification Texture, and Thermal Stability of 316 L Stainless Steel Manufactured by Laser Powder Bed Fusion

Napawanie krawędzi przedmiotów metodami TIG i PTA

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