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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 11    No. 5    October 2001

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Penetrating behavior of
eutectic liquid during Al/Cu
contact reactive brazing
QIAN Yi-yu(钱乙余)1, DONG Zhan-gui(董占贵)1, MA Xin(马  鑫)1,2

1. National Key Laboratory of Welding, Harbin Institute
of Technology,Harbin 150001, P.R.China;
2. National Key Laboratory of Reliability Physics of
Electronic Product, Guangzhou 510610, P.R.China

Abstract: The behavior of eutectic liquid penetrating into the Al base during Al/Cu contact reactive brazing process was studied. Analysis results show that the eutectic liquid prefers to expand along the grain boundary in the depth direction. Meanwhile, dissolution of solid Al and Cu into the eutectic liquid promotes the eutectic reaction and the continuously formed eutectic liquid leads to the reactive penetrating.

 

Key words:  Al/Cu; contact reactive brazing; eutectic reaction; penetrating; expanding

ISSN 1672-7029
CN 43-1423/U

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