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Mechanical properties of cold-sprayed Ti-6Al-4V coatings
Helmut Schmidt University, University of the Federal Armed Forces, Hamburg.
University West, Department of Engineering Science, Division of Production Engineering. (PTW)ORCID iD: 0000-0002-6929-3310
Helmut Schmidt University, University of the Federal Armed Forces, Hamburg.
Helmut Schmidt University, University of the Federal Armed Forces, Hamburg.
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2013 (English)In: Proceedings of the International Thermal Spray Conference, ASM International, 2013, 155-160 p.Conference paper, Published paper (Refereed)
Abstract [en]

Titanium and titanium alloys are of great interest in aerospace and medical industries. Especially, Ti-6Al-4V alloys show a unique combination of high mechanical strength, low density and an outstanding corrosion resistance. However, particularly the high strength restricts industrial processing procedures. Thus, there are increasing demands for powder metallurgical process routes. For pure titanium, cold spraying already proved to be a promising alternative for manufacturing semi-finished products, mainly due to the use of high process gas temperatures and pressures. Nevertheless, due to the higher material strength, the production of Ti-6Al-4V coatings by cold spraying is still challenging, even under higher process parameters. The present study deals with the production and characterization of Ti-6Al-4V coatings produced by cold spraying. All experiments were performed using nitrogen as process gas. By a systematic variation of the spray parameters up to a process gas temperature of 1000°C and a process gas pressure of 5 MPa, the coatings could be tuned for optimum mechanical properties. In addition, attainable coating properties are described in terms of a newly introduced coating quality parameter η, namely the ratio of the particle velocity to the critical velocity, to reveal the most significant influences on coating performance and to give hints for further optimization.

Place, publisher, year, edition, pages
ASM International, 2013. 155-160 p.
National Category
Materials Engineering Manufacturing, Surface and Joining Technology
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
URN: urn:nbn:se:hv:diva-6731Scopus ID: 2-s2.0-84907065335ISBN: 978-163266681-9 (print)OAI: oai:DiVA.org:hv-6731DiVA: diva2:751594
Conference
International Thermal Spray Conference and Exposition: Innovative Coating Solutions for the Global Economy, ITSC 2013; Busan; South Korea; 13 May 2013 through 15 May 2013; Code 107529
Available from: 2014-10-01 Created: 2014-10-01 Last updated: 2016-02-11Bibliographically approved

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Lyphout, Christophe

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