Microstructure and XRD analysis of brazing joint for duplex stainless steel using a Ni-Si-B filler metal

Journal Article · Tue Sep 15 00:00:00 EDT 2009 · Materials Characterization

DOI:https://doi.org/10.1016/J.MATCHAR.2009.03.004· OSTI ID:22066118

Xinjian, Yuan ^[1]; Kim, Myung Bok ^[1]

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1. Department of Materials Science and Engineering, Pusan National University, Busan, 609-735 (Korea, Republic of)

Brazing of a nitrogen-containing duplex stainless steel was preformed using a nickel-based filler metal (Ni-4.5wt.%, Si-3.2wt.%, B). The microstructure of the brazed joint was investigated using scanning electron microscopy, energy dispersive spectrometry, electron probe microanalyzer, and layer-by-layer X-ray diffraction analysis. The results indicated that before completion of isothermal solidification, BN, Ni{sub 3}B and Ni{sub 3}Si precipitates formed at the interface, in the athermally solidified zone and isothermally solidified zone, respectively. After isothermal solidification, only {gamma}-Ni phase appeared in the brazed interlayer. The appearance of hardness peak values in the athermally solidified zone and the interface most probably corresponded to the formation of Ni{sub 3}B and BN, respectively.

• OSTI ID: 22066118
• Journal Information: Materials Characterization, Vol. 60, Issue 9; Other Information: Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1044-5803
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BORON
BORON NITRIDES
BRAZED JOINTS
BRAZING
ELECTRON PROBES
FILLER METALS
HARDNESS
INTERFACES
LAYERS
MICROSTRUCTURE
NICKEL
NITROGEN
PRECIPITATION
SCANNING ELECTRON MICROSCOPY
SILICON
SOLIDIFICATION
STAINLESS STEELS
X-RAY DIFFRACTION
X-RAY SPECTROSCOPY