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Title | Vacuum hightemperature brazing of 3003 aluminum alloy |
Authors |
Makymova, S.V
Voronov, V.V. Kovalchuk, P.V. Shapiro, A.Е. |
ORCID | |
Keywords |
vacuum brazing aluminum alloy filler metal magnesium microstructure |
Type | Article |
Date of Issue | 2023 |
URI | https://essuir.sumdu.edu.ua/handle/123456789/92748 |
Publisher | Sumy State University |
License | Creative Commons Attribution - NonCommercial 4.0 International |
Citation | Makymova S. V., Voronov V. V., Kovalchuk P. V., Shapiro A. Е. (2023). Vacuum hightemperature brazing of 3003 aluminum alloy. Journal of Engineering Sciences (Ukraine), Vol. 10(2), pp. C1–C10. DOI: 10.21272/jes.2023.10(2).c1 |
Abstract |
Brazing filler metals based on the Al-Si system are widely used for brazing aluminum alloys. Their
melting point is 577 °С (eutectic). It is necessary to conduct comprehensive studies of the technological properties of
experimental filler metals and brazed joints to create a brazing filler metal with a reduced melting temperature for
vacuum brazing of thin-walled aluminum products made of alloy 3003. The paper presents the research results on hightemperature vacuum brazing of aluminum alloy 3003 with Al-Cu-(Si, Mg) filler metal. It was determined that the
amount of magnesium in the filler should be limited due to the risk of porosity formation associated with magnesium
vaporization. It was identified that reducing the magnesium content increases the liquidus temperature above 530–
550 °C. Therefore, experimental alloys require additional alloying with depressant elements, particularly silicon, to
achieve the required melting temperature level. The chemical inhomogeneity of the filler in the initial state (after rapid
solidification from the liquid state) and the structure of the brazed joints were investigated using micro-X-ray spectral
analysis. Through empirical means, it was determined that a magnesium content of 1.5 % by weight in the filler allows
for producing high-quality brazed joints without visible defects. In this case, shear strength is in the range of 0.6–0.7
of the strength of the base material. Tests of brazed joints for three-point bending resulted in an angle close to 180°,
which indicates the promising use of experimental brazing filler metal in vacuum brazing of aluminum alloy 3003. |
Appears in Collections: |
Journal of Engineering Sciences / Журнал інженерних наук |
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File | Size | Format | Downloads |
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Makymova_jes_2_2023.pdf | 1.21 MB | Adobe PDF | 13438987 |
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