The cold spray process consists of coating build-up by sequential impact, deformation and bonding of many particles. Therefore, formation and properties of a deposited layer are not only affected by the impact behavior of a single particle, but also by subsequent impact events. To investigate the material behavior under such conditions, impact of multiple particles in cold spray was studied here by the finite element method. Effects of high strain rates and temperature on material yield and failure criteria were considered. Particle conditions prior to impact were derived from fluid dynamics calculations. To predict sticking behavior of the particle, an interfacial cohesive strength parameter was defined between the particle and the substrate. The effects of temperature and particle positioning were examined for three particle impacts. In addition, simulations involving 100 consecutive particle impacts were carried out, and findings were compared with experimental observations. Results showed that subsequent impacts have a large effect on the previously impacted particles for cohesion, degree of deformation, and residual stresses.
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ASME/STLE 2012 International Joint Tribology Conference
October 7–10, 2012
Denver, Colorado, USA
Conference Sponsors:
- Tribology Division
ISBN:
978-0-7918-4508-0
PROCEEDINGS PAPER
On Simulation of Multi-Particle Impact Interactions in the Cold Spray Process
Baran Yıldırım,
Baran Yıldırım
Northeastern University, Boston, MA
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Andrew Hulton,
Andrew Hulton
Northeastern University, Boston, MA
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Seyed Ali Alavian,
Seyed Ali Alavian
Northeastern University, Boston, MA
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Teiichi Ando,
Teiichi Ando
Northeastern University, Boston, MA
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Andrew Gouldstone,
Andrew Gouldstone
Northeastern University, Boston, MA
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Sinan Müftü
Sinan Müftü
Northeastern University, Boston, MA
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Baran Yıldırım
Northeastern University, Boston, MA
Andrew Hulton
Northeastern University, Boston, MA
Seyed Ali Alavian
Northeastern University, Boston, MA
Teiichi Ando
Northeastern University, Boston, MA
Andrew Gouldstone
Northeastern University, Boston, MA
Sinan Müftü
Northeastern University, Boston, MA
Paper No:
IJTC2012-61202, pp. 83-85; 3 pages
Published Online:
July 26, 2013
Citation
Yıldırım, B, Hulton, A, Alavian, SA, Ando, T, Gouldstone, A, & Müftü, S. "On Simulation of Multi-Particle Impact Interactions in the Cold Spray Process." Proceedings of the ASME/STLE 2012 International Joint Tribology Conference. ASME/STLE 2012 International Joint Tribology Conference. Denver, Colorado, USA. October 7–10, 2012. pp. 83-85. ASME. https://doi.org/10.1115/IJTC2012-61202
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