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Effect of Microstructure on Diffusional Solidification of 4343/3005/4343 Multi-Layer Aluminum Brazing Sheet

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Abstract

The effect of microstructure on clad/core interactions during the brazing of 4343/3005/4343 multi-layer aluminum brazing sheet was investigated employing differential scanning calorimetry (DSC) and electron back-scattering diffraction (EBSD). The thickness of the melted clad layer gradually decreased during the brazing operation. It could be completely removed isothermally as a result of diffusional solidification at the brazing temperature. During the brazing cycle, the rate of loss of the melt in the brazing sheet, with small equiaxed grains’ core layer, was higher than that with the core layer consisting of elongated large grains. The difference in microstructure affected the amount of liquid formed during brazing.

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Acknowledgments

This research was sponsored by the Jiangsu Science Foundation (BK2011615, BY2011145, and BA2011024). We gratefully acknowledge the Jiangsu Alcha Aluminum Co. Ltd. for the preparation of the alloys.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P.R. China

    Yiyou Tu (Associate Professor), Zhen Tong (PhD Student) & Jianqing Jiang (Professor)

  2. Jiangsu Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing, 211189, P.R. China

    Yiyou Tu (Associate Professor) & Jianqing Jiang (Professor)

Authors
  1. Yiyou Tu
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  2. Zhen Tong
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  3. Jianqing Jiang
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Corresponding author

Correspondence to Yiyou Tu.

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Manuscript submitted October 10, 2011.

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Tu, Y., Tong, Z. & Jiang, J. Effect of Microstructure on Diffusional Solidification of 4343/3005/4343 Multi-Layer Aluminum Brazing Sheet. Metall Mater Trans A 44, 1760–1766 (2013). https://doi.org/10.1007/s11661-012-1550-5

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  • DOI: https://doi.org/10.1007/s11661-012-1550-5

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