Paper Title:
The Effect of Temperature on Microstructure and Mechanical Behavior of the Vacuum Brazed Joint of Ti-46.5Al-5Nb Alloy and 42CrMo Steel
  Abstract

: In this work, the effect of temperature on the microstructure evolution of vacuum brazed joint of TiAl alloy and 42CrMo was studied. The results have shown when the brazing temperature is under 870°C, no compound is formed at the boundary on the 42CrMo side. But when brazing temperature is over 870°C, a very narrow TiC compound film is found at the homologous site., while on the TiAl side, there always exists a Ti(Cu,Al)2 intermetallic compound layer at any brazing temperature. The elemental diffusion and reaction is the predominant factor of joint forming. The tensile fracture strength of brazed joint increases with the brazing temperature, the increase of the tensile strength of joint is due to the variation of the joint structure.

  Info
Periodical
Materials Science Forum (Volumes 475-479)
Main Theme
Edited by
Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie
Pages
829-832
DOI
10.4028/www.scientific.net/MSF.475-479.829
Citation
W. Liu, Q. Gao, W. Cong, J. T. Guo, "The Effect of Temperature on Microstructure and Mechanical Behavior of the Vacuum Brazed Joint of Ti-46.5Al-5Nb Alloy and 42CrMo Steel", Materials Science Forum, Vols. 475-479, pp. 829-832, 2005
Online since
January 2005
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