Features of formation of residual stresses in surface layers and coatings

Key Points

Lower compressive residual stresses were found in multilayer magnetron coatings than in monolayer coatings, highlighting their structural differences.
Multilayer Nb / Mo coatings exhibit residual stresses of less than 600 MPa, significantly lower than equivalent monolayer coatings.
An original technique using elastic anisotropy allows for the analysis of residual stresses in diverse metal coatings and alloys.
This assessment of surface layers emphasizes the importance of coating type in determining material performance.

Abstract

Using an original technique based on the features of elastic anisotropy of crystals, residual stresses in the surface layers of metal alloys after ion nitriding, in heat-protective coatings and coatings based on refractory metals, as well as in trip steels have been analyzed. It is shown that in multilayer (n = 120 layers) Nb / Mo magnetron coatings with a thickness of 800 μm, lower compressive residual stresses (less than 600 MPa) are formed than in monolayer Nb and Mo coatings with a thickness of 10 μm.

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Cite This Study

Betsofen et al. (Sun,) studied this question.

synapsesocial.com/papers/68af65a1ad7bf08b1eae5c69 https://doi.org/https://doi.org/10.31044/1814-4632-2023-10-30-40

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