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Open AccessArticle

Influence of Arc Brazing Parameters on Microstructure and Joint Properties of Electro-Galvanized Steel

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Department of Materials Science and Engineering, University of Seoul, Seoul 02504, Korea
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Department of Materials Science and Engineering and Department of Energy Systems Research, Ajou University, Suwon 16499, Korea
*
Author to whom correspondence should be addressed.
Metals 2019, 9(9), 1006; https://doi.org/10.3390/met9091006
Received: 12 August 2019 / Revised: 7 September 2019 / Accepted: 9 September 2019 / Published: 12 September 2019
Arc brazing of zinc-coated steel (EG, Electro-galvanized steel) using Cu-3 wt%Si filler metal was performed. The influence of arc current and brazing speed on the bonding properties of the joint, such as bead characteristics, arc penetration, joint hardness, and tensile shear strength were evaluated. The microstructural characteristics of the joint were examined by scanning electron microscopy (SEM) and the compositional information was revealed by energy dispersive spectroscopy (EDS). The throat thickness varies inversely with the brazing speed. The EG joint shows the formation of Fe2Si phases, which result in higher microhardness than the base metal. The tensile samples were fractured in base metal, while minor bead cracks developed in the samples brazed at 80 cm/min-80 A, 60 cm/min-70 A, 70 cm/min-70 A. View Full-Text
Keywords: gas metal arc brazing; zinc-coated steel; filler metal; tensile shear strength; microhardness gas metal arc brazing; zinc-coated steel; filler metal; tensile shear strength; microhardness
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MDPI and ACS Style

Lee, S.J.; Sharma, A.; Jung, D.H.; Jung, J.P. Influence of Arc Brazing Parameters on Microstructure and Joint Properties of Electro-Galvanized Steel. Metals 2019, 9, 1006.

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