Hostname: page-component-8448b6f56d-m8qmq Total loading time: 0 Render date: 2024-04-19T23:06:11.979Z Has data issue: false hasContentIssue false

Structural Transformation and Mechanical Properties of Cold Sprayed Nickel Coatings after Annealing

Published online by Cambridge University Press:  01 February 2011

Yu Zou
Affiliation:
yu.zou@mail.mcgill.ca, McGill University, Department of Mining and Materials Engineering, Montreal, Canada
Ahmad Rezaeian
Affiliation:
ahmad.rezaeian@mcgill.ca, McGill University, Department of Mining and Materials Engineering, Montreal, Canada
Jerzy Szpunar
Affiliation:
jerzy.szpunar@mcgill.ca, McGill University, Department of Mining and Materials Engineering, Montreal, Canada
Eric Irissou
Affiliation:
Eric.Irissou@imi.cnrc-nrc.gc.ca, National Research Council Canada (NRC), Industrial Materials Institute (IMI), Boucherville, Canada
Stephen Yue
Affiliation:
steve.yue@mcgill.ca, McGill University, Department of Mining and Materials Engineering, Montreal, Canada
Get access

Abstract

Cold spray is a relatively new coating technology in which coatings can be produced by powdered particles under large plastic deformation without significant heating. In this paper, nickel coatings were fabricated by cold spray process followed by heat treatment in inert gas. Structural transformation of both as-sprayed and annealed coatings was investigated by Electron Backscattering Diffraction (EBSD) in a FEG-SEM. The results show that after cold spraying sub-micron grains and subgrains with high crystal strain appear in the particle bond interface, but not shown in the center of particles. Microstructure was transformed to be uniform and stresses were released after annealing in 400°C for one hour. And ductility and formability were significantly improved due to recovery and recrystallization. Continuous recrystallization after large strain deformation could occur after cold spraying followed by annealing.

Type
Research Article
Copyright
Copyright © Materials Research Society 2009

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Dykhuizen, R.C. and Smith, M.F., J. Therm. Spray Technol., 7(2), 205212 (1998).Google Scholar
2. Assadi, H., Gärtner, F., Stoltenhoff, T. and Kreye, H., Acta Materialia, 51, 43794394 (2003).Google Scholar
3. Schmidt, T., Gärtner, F., Assadi, H. and Kreye, H., Acta Materialia, 54, 729742 (2006).Google Scholar
4. Blose, R.E., ITSC2005:International Thermal Spray Conference, (2005)Google Scholar
5. Raletz, F., et al. ITSC 2004: International Thermal Spray Conference: ASM International (2004)Google Scholar
6. Li, W., Li, C., and Liao, H., Journal of Thermal Spray Technology, 15(2), 207 (2006)Google Scholar
7. Hall, A. C., Williamson, R. L., Hirschfeld, D. A. and Roemer, T. J., the 2006 International Thermal Spray Conference (2006)Google Scholar
8. Hall, A.C., Cook, D.J., Neiser, R.A., Roemer, T.J., and Hirschfeld, D.A., Journal of Thermal Spray Technology, 15(2), 233 (2006)Google Scholar
9. Jazaeri, H., Humphreys, F.J., Acta Materialia, 52, 32513262 (2004)Google Scholar
10. Belyakov, A., Sakai, T., Miura, H., Kaibyshev, R., Tsuzaki, K., Acta Materialia, 50, 15471557 (2002)Google Scholar