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Funct. Mater. 2019; 26 (4): 773-778.

doi:https://doi.org/10.15407/fm26.04.773

Stress-strained state of textured surfaces with selectively indented regions

V.Marchuk, M.Kindrachuk, O.Tisov, A.Kornienko, O.Radko, V.Kharchenko

National Aviation University, 1 Kosmonavta Komarova Ave., 03680 Kyiv, Ukraine

Abstract: 

The process of formation of a textured surface with selectively indented regions was studied. It is shown that technological residual tensile stresses arise in the surface layer. Their value depends on the texture of the surface layer. It is established that the larger the size of dimples, the smaller the stress concentrator. Strengthening of the surface layer by the method of ion-plasma thermocyclic nitriding eliminates residual tensile stresses and defects on the inner surfaces of the dimples.

Keywords: 
textured surface, indentation selective treatment, stress-strained state, nitride layer.
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