Paper Title:
Wide-Gap Brazing of IN738 and the Bonding Strength Using Ni-Based Filler Metal Powders
  Abstract

The microstructure and bonding strength of the wide-gap region brazed with different filler metal powder (BNi-3 and DF 4B) and various powder mixing ratios of additive powder to filler metal powder were investigated. The microstructure characterization showed that Cr borides with a blocky morphology were existed in the brazed region in both filler metal powder. The bonding strength of the wide-gap region brazed with 60 wt.% IN738 additive and 40 wt.% DF 4B powder exhibited 92% tensile strength of IN738 superalloy at room temperature. The Cracks in the wide-gap brazed region initiated at the intermetallic compound and eutectic structure, and then propagated through them.

  Info
Periodical
Key Engineering Materials (Volumes 345-346)
Edited by
S.W. Nam, Y.W. Chang, S.B. Lee and N.J. Kim
Pages
1449-1452
DOI
10.4028/www.scientific.net/KEM.345-346.1449
Citation
Y. H. Kim, I. H. Kim, K.T. Kim, S. Y. Shin, "Wide-Gap Brazing of IN738 and the Bonding Strength Using Ni-Based Filler Metal Powders", Key Engineering Materials, Vols. 345-346, pp. 1449-1452, 2007
Online since
August 2007
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Price
$32.00
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