The bonding of nickel foam to Ti-6Al-4V using Ti-Cu-Ni braze alloy

Tom Jarvis, W Voice, R Goodall

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

A titanium-copper-nickel braze powder is combined with various carrier polymers at a range of loadings and used to braze open cell nickel foams to Ti-6Al-4V plate. The microstructure of the interfaces and the chemical composition are examined, and these are correlated with the mechanical behaviour of the joints, as determined by shear and tensile tests, with the aim being to determine the influence the polymer binder and application method have on the final bond microstructure and properties. The investigations show that, as expected, the binder system used can have an important effect on the amount of oxygen, carbon and nitrogen contained in the braze material, and the mechanical properties obtained. However, the effect is complex, better properties in shear being obtained with an apparently lower quality bond, an observation that is explained by considering the constrained boundary layer formed by the bond. Further Weibull tests show that, although the density variations in the commercially available nickel based foam affect the properties, there is additional variation due to the high degree of process control required to achieve a good bond. (C) 2010 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)2592-2601
Number of pages10
JournalMaterials Science and Engineering A
Volume528
Issue number6
DOIs
Publication statusPublished - 1 Mar 2011

Keywords

  • Brazing
  • Mechanical characterization
  • Bonding
  • Titanium alloys
  • Porous materials

Fingerprint

Dive into the research topics of 'The bonding of nickel foam to Ti-6Al-4V using Ti-Cu-Ni braze alloy'. Together they form a unique fingerprint.

Cite this