Laser Cladding of Ni50Cr: A Parametric and Dilution Study

Song, Bo; Hussain, Tanvir; Voisey, K.T.

doi:10.1016/j.phpro.2016.08.072

Cited by 28 publications

(14 citation statements)

References 23 publications

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“…When comparing the obtained results for equal laser power and powder flow values (Figure 3), the height of the clads is higher for the minimum value of process speed (13 mm/s) than those made with the maximum value (27 mm/s). Therefore, going slower helped to deposit a higher amount of energy to the LC process [18,19]. This is observed in the couples of tests for 2000 W, 3000 W and 4000 W shown in Table 3.…”

Section: Individual Clad Experimentsmentioning

confidence: 71%

“…On the other side, the different power values combined with the highest process speed seem to be too fast for the power value used, achieving clads with less than 1 mm in height. Therefore, the interaction time found at higher process speeds did not allow the powder enough time to be completely molten [18,19]. From this group, the test with the highest values of laser power (4000 W) and process speed (27 mm/s) shows a dilution ratio higher than 20% (not desirable).…”

Section: Individual Clad Experimentsmentioning

confidence: 96%

“…Results of the metallographic analysis performed in the cladded specimens are represented in the following paragraphs. These results will be primarily evaluated according to their dilution values, which should be in the range of 10-20% [18,19]. The dilution has been calculated according to the Equation (1).…”

Section: Laser Focus Distance (Mm)mentioning

confidence: 99%

“…Lower widths and heights found in the rest of the tests can be explained from the process speed values chosen for the design of experiments, as they were apparently too high and therefore cooling time was left to be too short, meaning that was not possible to melt all the delivered powder [18,19]. Conclusions can be drawn also from the measured dilution percentages at different laser power value settings: when using 3000 W, dilution reached 20% and with 4000 W the dilution went up to more than 35%.…”

Section: Individual Clad Experimentsmentioning

confidence: 99%

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Analysis of the Process Parameter Influence in Laser Cladding of 316L Stainless Steel

Alvarez

Montealegre²,

Pulido-Jiménez

et al. 2018

JMMP

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Laser Cladding is one of the leading processes within Additive Manufacturing technologies, which has concentrated a considerable amount of effort on its development. In regard to the latter, the current study aims to summarize the influence of the most relevant process parameters in the laser cladding processing of single and compound volumes (solid forms) made from AISI 316L stainless steel powders and using a coaxial nozzle for their deposition. Process speed, applied laser power and powder flow are considered to be the main variables affecting the laser cladding in single clads, whereas overlap percentage and overlapping strategy also become relevant when dealing with multiple clads. By setting appropriate values for each process parameter, the main goal of this paper is to develop a processing window in which a good metallurgical bond between the delivered powder and the substrate is obtained, trying simultaneously to maintain processing times at their lowest value possible. Conventional metallography techniques were performed on the cross sections of the laser tracks to measure the effective dimensions of clads, height and width, as well as the resulting dilution value. Besides the influence of the overlap between contiguous clads and layers, physical defects such as porosity and cracks were also evaluated. Optimum process parameters to maximize productivity were defined as 13 mm/s, 2500 W, 30% of overlap and a 25 g/min powder feed rate.

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Section: Individual Clad Experimentsmentioning

confidence: 71%

Section: Individual Clad Experimentsmentioning

confidence: 96%

Section: Laser Focus Distance (Mm)mentioning

confidence: 99%

Section: Individual Clad Experimentsmentioning

confidence: 99%

See 2 more Smart Citations

Analysis of the Process Parameter Influence in Laser Cladding of 316L Stainless Steel

Alvarez

Montealegre²,

Pulido-Jiménez

et al. 2018

JMMP

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show abstract

“…A higher compactness of the coatings high precision and superior mechanical proprieties are only several advantages of laser cladding over the conventional coatings methods (plasma coating, flame coating or welding) The main goal in the laser cladding technology is to not overheat the base material and to obtain a low dilution, typically (< 5%) and in the same time to have an increased adhesion between the coating and base material [3,4].…”

Section: Introductionmentioning

confidence: 99%

Pulsed Laser Cladding of Ni Based Powder

Pascu

Stanciu

Croitoru

et al. 2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. The aim of this paper is to optimize the operational parameters and quality of one step Metco Inconel 718 atomized powder laser cladded tracks, deposited on AISI 316 stainless steel substrate by means of a 1064 nm high power pulsed laser, together with a Precitec cladding head manipulated by a CLOOS 7 axes robot. The optimization of parameters and cladding quality has been assessed through Taguchi interaction matrix and graphical output. The study demonstrates that very good cladded layers with low dilution and increased mechanical proprieties could be fabricated using low laser energy density by involving a pulsed laser.

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