Powder processing and coating heat treatment on cold sprayed Ti-6Al-4V alloy

  1. Get@NRC: Powder processing and coating heat treatment on cold sprayed Ti-6Al-4V alloy (Opens in a new window)
DOIResolve DOI: http://doi.org/10.4028/www.scientific.net/MSF.706-709.258
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Proceedings titleMaterials Science Forum
Conference7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011, 1 August 2011 through 5 August 2011, Quebec City, QC
Pages258263; # of pages: 6
SubjectArgon atmospheres; Ball-milled; Coating deposition; Coating hardness; Coating porosity; Cohesion strength; Cold spray; Feedstock powders; Heat treatment temperature; Low energies; Micro tensile tests; Nitrogen gas; Particle impact velocities; Powder flowability; Powder processing; Propellant gas; Static recovery; Ti-6al-4v; Ti-6Al-4V alloy; Aluminum; Argon; Cerium alloys; Heat treatment; Mechanical properties; Nitrogen; Powder coatings; Sintering; Sprayed coatings; Tensile strength; Tensile testing; Titanium alloys; Vanadium; Vanadium alloys; Aluminum coatings
AbstractThis study investigates the effect of powder processing on powder flowability, compact ability, and the heat treatment of the resulting coatings on the mechanical properties of cold gas dynamic sprayed Ti-6Al-4V alloy. Nitrogen gas was used throughout the coating deposition process. Propellant gas temperature and pressure were attuned to maximize particle impact velocity. Three powder processing conditions were used in this study: as received (AR), low-energy ball milled (BM), and argon atmosphere heat treated (HT). Results showed coating porosities of around 6 to 7%, regardless of the feedstock powder used or the heat treatment performed. It was observed at 600 and 800°C anneals that a coating hardness reduction occurred, possibly due to static recovery and recrystallization, with minor sintering possibly occurring at the 800°C anneals. In addition, micro tensile tests showed an increase in cohesion strength at higher heat treatment temperatures. © 2012 Trans Tech Publications, Switzerland.
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AffiliationNational Research Council Canada (NRC-CNRC); NRC Industrial Materials Institute (IMI-IMI)
Peer reviewedYes
NPARC number21269558
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Record identifier45202140-473b-4a2b-9415-6d0eeda5d5fe
Record created2013-12-12
Record modified2016-05-09
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