期刊
MATERIALS LETTERS
卷 61, 期 11-12, 页码 2373-2377出版社
ELSEVIER
DOI: 10.1016/j.matlet.2006.09.016
关键词
contact reaction brazing; Mg alloy; Al alloy; zinc-based brazing alloy; intermetallic compounds
According to the feature of Mg-Zn eutectic reaction, Al alloy was bonded to Mg alloy by contact reaction brazing using a zinc-based brazing alloy successfully. The experimental observations showed that Mg-Al intermetallic compounds were avoided for the addition of the zinc-based brazing alloy. The Mg substrate and the remanent brazing alloy were bonded with the reaction zone that formed along the zinc rich and magnesium poor interface. Only a few Mg-Zn intermetallic compounds (MgZn2) existed homogeneously in the reaction zone. The substrate and the remanent brazing alloy were bonded with a thin Al-Zn solution. The average tensile-shear strength of the final joints was a little lower than that of the zinc-based brazing alloy owning to some pores at the interface between the reaction zone and the remanent brazing alloy layer. (c) 2006 Elsevier B.V. All rights reserved.
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