Paper Title:
Distributions of Residual Stresses in Diffusion Bonding of Dissimilar Materials Intermetallics TiAl to Steel 40Cr and Effect of Interlayer
  Abstract

Distributions of residual stress in diffusion bonding of dissimilar materials intermetallics TiAl to steel 40Cr were simulated by FEM calculation. Results showed that destructive residual stresses presented in the minute area adjacent to bond-line of the base material with the smaller thermal expansion coefficient. Reducing bonding temperature and diminishing bonding time are in favor of the mollification of interface tresses. Concepts of the residual stress factor Rf and the thickness factor Tf were propounded. As selecting the interlayer, the interlayer with smaller |Rf| and Tf should be given precedence, and with a prerequisite of sufficient physical contact small thickness of the interlayer are finer.

  Info
Periodical
Key Engineering Materials (Volumes 353-358)
Edited by
Yu Zhou, Shan-Tung Tu and Xishan Xie
Pages
1939-1943
DOI
10.4028/www.scientific.net/KEM.353-358.1939
Citation
P. He, D. Liu, "Distributions of Residual Stresses in Diffusion Bonding of Dissimilar Materials Intermetallics TiAl to Steel 40Cr and Effect of Interlayer", Key Engineering Materials, Vols. 353-358, pp. 1939-1943, 2007
Online since
September 2007
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