J Mater Sci Technol ›› 2010, Vol. 26 ›› Issue (4): 311-316.

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Transmission Electron Microscopy Study of the Infrared Brazed High-strength Titanium Alloy

Z.Y. Wu, R.K. Shiue,  C.S. Chang   

  1. 1) Department of Materials Science and Engineering, National Taiwan University, Taipei 106, Taiwan, China
    2) Engineered Materials Solutions, 39 Perry Avenue, MS 4-1, Attleboro, MA 02703-2410, USA
  • Received:2009-03-09 Revised:2010-03-03 Online:2010-04-30 Published:2010-04-28
  • Contact: R.K. Shiue
  • Supported by:

    the National Science Council (NSC), Taiwan, China, under the grant number 98-2221-E-002-052

Abstract:

The transmission electron microscopy was employed to investigate the microstructure of infrared brazed high-strength Ti alloy using the Ti-15Cu-15Ni filler metal. Coarse primary Ti2Ni and transformed β-Ti are observed in the 300 s brazed specimen. Blocky Ti2Ni and eutectoid Ti2Cu intermetallics are disappeared from the joint with increasing the brazing time to 1800 s. Both acicular α-Ti and retained β-Ti dominate the entire brazed joint.

Key words: Infrared Brazing, Ti, Ti-Cu-Ni filler, Microstructure