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Microstructure and phase constitution near the interface of Cu/3003 torch brazing using Al-Si-La-Sr filler

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Abstract

It has been mainly studied in this paper on brazing of Cu to Al using Al-Si filler metal. The optimized scanning rate of 2.5 mm/s is first obtained through simulating the temperature field of Cu-Al brazing process based on ANSYS software. Then the brazing of Cu-C11000 to Al-3003 using Al-Si-La-Sr filler is carried out by torch brazing technology. It is found that the brazing seam region is mainly consisted of α-Al solid solution and CuAl2 IMC. Further experimental results also show that the rare earth element La in filler metal can not only refine the grain, but also promote the dispersion of intermetallic compounds into the brazing seam, which significantly improves the brazing seam microstructure and mechanical properties of the joints.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China

    Fei Yan, Chunming Wang & Yajun Wang

  2. Centre for Advanced Materials Joining and Simulations (AMJS), School of Materials Science and Engineering, Heifei University of Technology, Hefei, 230009, China

    Daorong Xu, S. C. Wu & Qinde Sun

  3. Centre for Advanced Computations in Engineering Science (ACES), Department of Mechanical Engineering, National University of Singapore, Singapore, Singapore

    S. C. Wu

Authors
  1. Fei Yan
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  2. Daorong Xu
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  3. S. C. Wu
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  4. Qinde Sun
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  5. Chunming Wang
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  6. Yajun Wang
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Correspondence to Chunming Wang.

Additional information

Recommended by Associate Editor In-Ha Sung

Fei Yan received his Master’s Degree in Material Processing Engineering from Hefei University of Technology, China, in 2010. He is currently pursuing a Ph.D degree at the School of Materials Science and Engineering at HUST in Wuhan, China. His research is focused on laser materials processing.

Chun-ming Wang is an Associate Professor at the School of Materials Science and Engineering, Huazhong University of Science and Technology (HUST), China. His research interest is laser materials processing. He is the author of 20 published papers.

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Yan, F., Xu, D., Wu, S.C. et al. Microstructure and phase constitution near the interface of Cu/3003 torch brazing using Al-Si-La-Sr filler. J Mech Sci Technol 26, 4089–4096 (2012). https://doi.org/10.1007/s12206-012-0884-7

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  • DOI: https://doi.org/10.1007/s12206-012-0884-7

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