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Degradation mechanism for high-temperature sliding wear in surface-modified In718 superalloy

Publication Type : Journal Article

Publisher : Cogent Engineering, Cogent OA

Source : Cogent Engineering, Cogent OA, Volume 5, Number 1, p.1501864 (2018)

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Keywords : 3D surface topography, A50T, Friction, Plasma spray, SEM, sliding wear mechanism, Superalloy

Campus : Coimbatore

School : School of Engineering

Department : Mechanical Engineering

Year : 2018

Abstract : This technical paper deals with high-temperature dry sliding wear behavior and its mechanism of Al2O3–50TiO2 (A50T) coating on Inconel 718 alloy. The sliding wear behavior of the A50T coating on Inconel 718 alloy was investigated using a pin on disc equipment at 500°C with varying parameters like normal load and sliding velocity. Scanning Electron Microscope (SEM) features of worn samples reveal that ploughing, deep grooving and splat exfoliation are the dominant wear mechanisms of A50T coating at 10 N, while at 30 N, they are crack extension, crack deflection, crack bridging and splat exfoliation.

Cite this Research Publication : K. G. Thirugnanasambantham, Raju, R., Sankaramoorthy, T., Velmurugan, P., Kannagi, A., M Reddy, C. Kishore, V Chary, S. Koushik, Mustafa, M. A., and V Chandra, R., “Degradation mechanism for high-temperature sliding wear in surface-modified In718 superalloy”, Cogent Engineering, vol. 5, p. 1501864, 2018.

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