Effect of cold spray deposition of a titanium coating on fatigue behavior of a titanium alloy |
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Authors: | T S Price P H Shipway D G McCartney |
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Affiliation: | (1) University of Nottingham, Nottingham, UK |
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Abstract: | The deposition of titanium on a titanium alloy substrate is being examined for potential use as a surface treatment for medical
prostheses. A Ti6Al4V alloy was coated with pure titanium by cold gas dynamic spraying. Coatings were deposited onto samples
with two different surface preparation methods (as-received and grit-blasted). The fatigue life of the as-received and grit-blasted
materials, both before and after coating, was measured with a rotating-bend fatigue rig. A 15% reduction in fatigue endurance
limit was observed after application of the coating to the as-received substrate, but no significant reduction was observed
on its application to the grit-blasted substrate. The reduction in fatigue endurance limit has been related to the substrate-coating
interface properties, the elastic modulus, and the residual stress states.
This article was originally published inBuilding on 100 Years of Success, Proceedings of the 2006 International Thermal Spray Conference, (Seattle, WA), May 15–18, 2006, B.R. Marple, M.M. Hyland, Y.-Ch. Lau, R.S. Lima, and J. Voyer, Ed., ASM International, Materials
Park, 2006. |
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Keywords: | CGDS fatigue residual stress titanium Ti6Al4V Young’ s modulus |
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