Journal
MATERIALS SCIENCE AND TECHNOLOGY
Volume 26, Issue 2, Pages 188-192Publisher
MANEY PUBLISHING
DOI: 10.1179/174328409X428891
Keywords
SiO2 glass ceramic; Brazing; Microstructure; Interface
Funding
- National Natural Foundation of Science [50705022]
- Program of Excellent Team in Harbin Institute of Technology, Harbin, China
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In the present paper, SiO2 glass ceramic was joined to Ti-6Al-4V alloy with 35Ti-35Zr-10Ni-15Cu (wt-%) filler foil. The whole brazing process was performed under vacuum circumstances at different temperatures (850-1000 degrees C) for several holding times (1-30 min). According to results of scanning electron microscopy, energy dispersive spectrometry, electron probe X-ray microanalysis and X-ray diffraction analysis, the reaction products of the interface are Ti2O, Zr3Si2, Ti5Si3, Ti based solid solution and Ti-2(Cu, Ni). There is residual TiZrNiCu braze alloy on the SiO2 glass ceramic/Ti-6Al-4V alloy interface after brazing. Besides, the interface evolution model of the joint was described by four stages: diffusion and solution among atoms, formation of reaction products, precipitation and growth of reaction layers respectively.
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