Please use this identifier to cite or link to this item: https://apo.ansto.gov.au/dspace/handle/10238/5237
Title: Residual stresses in cold spray Al coatings: the effect of alloying and of process parameters
Authors: Spencer, K
Luzin, V
Matthews, N
Zhang, MX
Keywords: Neutron diffraction
Kinetics
Stresses
Aluminium
Particles
Helium
Issue Date: 25-May-2012
Publisher: Elsevier Science
Citation: Spencer, K., Luzin, V., Matthews, N., & Zhang, M. X. (2012). Residual stresses in cold spray Al coatings: the effect of alloying and of process parameters. Surface & Coatings Technology, 206 (19-20), 4249-4255. doi:10.1016/j.surfcoat.2012.04.034
Abstract: Al and Al alloy cold spray coatings were deposited on Mg substrates using two different cold spray systems – a Kinetic Metallization system (convergent barrel, sonic nozzle) and a CGT system (convergent-divergent barrel, supersonic nozzle). The residual stress profiles in the coatings were measured using neutron diffraction with high spatial resolution. In the first part of the study, the residual stress profile in pure Al coatings was compared when sprayed using the Kinetic Metallization system (using both helium and nitrogen as the driving gas), and with the CGT system using nitrogen gas. In this way the effect of impact velocity and process temperature was studied. In the second part of the study, the residual stress profile was compared in coatings of pure Al, 7075 Al and 6061 Al sprayed using the same process conditions in the CGT system. The residual stress profiles depend more on the alloy content, i.e. intrinsic resistance to plastic deformation, than on the processing conditions, and this is interpreted using a simple model that incorporates the effect of peening stresses in the cold spray process. © 2012, Elsevier Ltd.
Gov't Doc #: 4445
URI: http://dx.doi.org/10.1016/j.surfcoat.2012.04.034
http://apo.ansto.gov.au/dspace/handle/10238/5237
ISSN: 0257-8972
Appears in Collections:Journal Articles

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