Localisation of deformation in cold gas dynamic spraying
| Autor: | W. Scharff, J. Kocimski, Volf Leshchynsky, Igor Smurov, R. Gr. Maev, O. Bielousova |
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| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Structure formation Materials science Computer simulation Metallurgy Gas dynamic cold spray 02 engineering and technology Surfaces and Interfaces Substrate (electronics) engineering.material 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Surfaces Coatings and Films Adiabatic shear band Coating 0103 physical sciences Materials Chemistry engineering Particle Deformation (engineering) Composite material 0210 nano-technology |
| Zdroj: | Surface Engineering. 32:655-662 |
| ISSN: | 1743-2944 0267-0844 |
| DOI: | 10.1179/1743294415y.0000000059 |
| Popis: | One of the main specific features of the cold spray process is localisation during particle impact deformation. The resultant adiabatic shear instability is the phenomenon that is known to play a major role in the particle/substrate and particle/particle bonding and coating structure formation during the cold spray process. In this article, the cold spray process is numerically simulated as an impact between a single spherical particle with the substrate, and comparison with experimental results for Armco iron and stainless steel particles is made. To describe a deformation behavior of the two materials at high strain rates, the Johnson–Cook model has been chosen. The results indicate that the model accurately captures the grain distortion in the impact zone for both materials. This approach provides valuable information on the characterisation of the strain localisation at the particle/substrate interface. |
| Databáze: | OpenAIRE |
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