Identification of Phases in the Wide-Gap Region Brazed with BNi-3 Filler Metal Powder Using Electron Backscatter Diffraction

Yong Hwan  Kim; Il Ho Kim; K.T. Kim; Seung Y. Shin; S.I. Kwun

doi:10.4028/www.scientific.net/MSF.544-545.355

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HomeMaterials Science ForumMaterials Science Forum Vols. 544-545Identification of Phases in the Wide-Gap Region...

Identification of Phases in the Wide-Gap Region Brazed with BNi-3 Filler Metal Powder Using Electron Backscatter Diffraction

Abstract:

The phases formed in the wide-gap region brazed with BNi-3 filler metal powder in IN738 superalloy were investigated by electron backscatter diffraction (EBSD). The morphology and chemical composition of the phase were investigated by field emission scanning electron microscopy (FESEM) and Auger electron spectroscopy (AES). The wide-gap region brazed with BNi-3 filler metal had a microstructure consisting of primary Ni3B, binary eutectic of Ni3B-Ni solid solution and ternary eutectic of Ni3B-Ni-Ni3Si structure. EBSD pattern analysis revealed that the Ni3B had orthorhombic structure with lattice parameter of a=0.439, b=0.522 and c=0.662 nm, and the Ni3Si phase had cubic structure with lattice parameter of a=0.350 nm.

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Periodical:

Materials Science Forum (Volumes 544-545)

Pages:

355-358

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.544-545.355

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Online since:

May 2007

Authors:

Yong Hwan Kim, Il Ho Kim, K.T. Kim, Seung Y. Shin, S.I. Kwun

Keywords:

CrB, Electron Backscatter Diffraction (EBSD), Eutectic, Ni₃B, Ni₃Si, Wide-Gap Brazing

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