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Article Dans Une Revue Tribology International Année : 2024

Effect of the elevated temperature on the wear behavior of Laser Metal Deposition IN718 repairs

Théo Zurcher
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Gaëtan Bouvard
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Jean-Christophe Abry
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Vincent Fridrici
Éric Charkaluk

Résumé

IN718, a nickel-based superalloy popular in aerospace, has good high-temperature mechanics/corrosion resistance. Laser Metal Deposition (LMD) repairs using IN718 are extensively explored, yet few studies delve into their tribological aspects. This research examines post-treated IN718 coatings, mimicking rapid repairs, investigating their high-temperature tribological behavior. Samples underwent tribological tests at diverse loads and temperatures. Results show the scanning strategy does not impact the wear behavior. At elevated temperatures, a glaze layer forms in the contact zone, impacting lubrication and surface protection based on its uniformity. Despite its advantageous lubricating ability, at 400°C and 50 N force, the oxidized debris layer lacks mechanical stability. IN718 LMD repairs manifest enhanced high-temperature wear resistance compared to ambient conditions, attributed to the glaze layer.
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Dates et versions

hal-04404551 , version 1 (19-01-2024)

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Théo Zurcher, Gaëtan Bouvard, Jean-Christophe Abry, Vincent Fridrici, Éric Charkaluk. Effect of the elevated temperature on the wear behavior of Laser Metal Deposition IN718 repairs. Tribology International, 2024, 192, pp.109276. ⟨10.1016/j.triboint.2024.109276⟩. ⟨hal-04404551⟩
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