- Tytuł:
- Influence of chosen microstructure features on residual stress distribution in FGM surface coating system with the use of FEM micromechanical random models
- Autorzy:
-
Szymczyk, W.
Włodarczyk, J. - Powiązania:
- https://bibliotekanauki.pl/articles/243093.pdf
- Data publikacji:
- 2007
- Wydawca:
- Instytut Techniczny Wojsk Lotniczych
- Tematy:
-
surface coatings
FEM
micromechanical modelling
functionally graded materials
roughness - Opis:
- Multilayered coatings established on parts of internal combustion as well as jet engines may be used as TBC systems providing their better thermal-mechanical efficiency, tribological properties, wear resistance and ability to withstand the influence of aggressive media. The example coating system was established on a beryllium copper substrate and consisted of the NiCr midsurface and TiN external layers. The system was analyzed as a functionally gradient material (FGM) with an assumed linear gradient function of material properties in transition zones between volumes of the pure materials of the substrate, midsurface and the external coating. The influence of the chosen microstructure features onto distribution of residual stresses was investigated. . These features were: transition zones, porosity and roughness of the external surface of the coating. Transition zones are the areas at the borders between particular layers of different materials where they are mutually interpenetrated. Different types of porosity were taken into comparisons: evenly dispersed and forming clusters. The 5, 10, 15 and 20% porosities of both of the types were investigated. At last roughness of the coating surface was introduced into the models. All the features were automatically generated with the use of random procedures.
- Źródło:
-
Journal of KONES; 2007, 14, 2; 485-492
1231-4005
2354-0133 - Pojawia się w:
- Journal of KONES
- Dostawca treści:
- Biblioteka Nauki
Artykuł