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

Abstract:

Article Preview

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

Citation:

Y. H. Kim et al., "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

Export:

Price:

$38.00

[1] E. Lugscheider and K. D. Partz: Weld. J. Vol. 62 (1983), p. 160s.

[2] K. A. Ellison, P. Lowden and J. Liuburdi: J. Eng. Gas Turbines Power Vol. 116 (1994), p.237.

[3] S. R. Bell: Mater. Sci. Tech. Vol. 1 (1985), p.629.

[4] L. C. Lim, W. Y. Lee and M. O. Lai: Mater. Sci. Tech. Vol. 11 (1995), P. 955.

[5] Z. Zhang, Z. Zhang, J. Sung and X. Liu: Mat. Trans. Vol. 41 (2000), p.1073.

[6] X. Wu, R. S. Chandel, S. H. Pheow and H. Li: J. Mater. Proces. Tech. Vol. 113 (2001), p.215.

[7] D. S. Duvall, W. A. Owczarski and D. F. Paulonis: Weld. J. Vol. 53(1974), p.203.

[8] S. K. Tung, L. C. Lim and M. O. Lai: Scripta Mater. Vol. 34(1996), p.763.

[9] T. B. Massalski: Binary Phase diagrams (ASM International, USA 1990).

[10] B. Jahnke and J. Demmy: Thin Solid Film. Vol. 110 (1983), p.225.

[11] R. Tandon and R. M. German: Int. J. Powd. Metall. Vol. 30 (1994), p.435.

[12] S. K Tung, L. C. Lim and M. O. Lai: Scripta Mater. Vol. 33 (1995), p.1253 (c) (Cr, W)2B Tensile direction (a) Ni-Ni3B Tensile direction (Cr, W)B (b) (d) pore.

Fetching data from Crossref.
This may take some time to load.