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Dissolution of TiAl alloy during high temperature brazing

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Abstract

An analytical model has been established to evaluate the thickness of the dissolution layer of base metal in a liquid brazing filler metal during a high temperature brazing process. The model was validated by a study of brazing of a TiAl alloy to a 42CrMo steel. Peak brazing temperatures were within a range of 1103–1203 K. The margin of deviation between predicted and experimentally determined dissolution thicknesses is within the range of 1–14 %, thus supporting the validity of the model well.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (No. 50975062), the Science Foundation of Educational Department of Jiangxi Province (No. GJJ10033), and the Funding for Young Scientists of Jiangxi Province (2010DQ01000), China. The first author (YL) acknowledges support from the China Scholarship Council for a visiting scholar position in the Brazing Laboratory of the College of Engineering, the University of Kentucky. The logistics and facility support of the Institute for Sustainable Manufacturing at the University of Kentucky are acknowledged as well. The work of Prof. D.P. Sekulic and W. Liu has been funded by the US National Science Foundation under grant CBET-123581 for 2012.

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Authors and Affiliations

  1. Key Lab for Robot & Welding Automation of Jiangxi Province, Mechanical & Electrical Engineering School, Nanchang University, Nanchang, 330031, People’s Republic of China

    Yulong Li

  2. Department of Mechanical Engineering, College of Engineering, University of Kentucky, Lexington, KY, 40506, USA

    Wen Liu & Dusan P. Sekulic

  3. State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin, 150001, People’s Republic of China

    Peng He & Jicai Feng

Authors
  1. Yulong Li
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  2. Wen Liu
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  3. Peng He
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  4. Jicai Feng
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  5. Dusan P. Sekulic
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Corresponding author

Correspondence to Yulong Li.

Appendix

Appendix

See Table 3.

Table 3 Experimental data of dissolution under different brazing conditions, predicted dissolution depth by Eq. (4) and the associated error
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Li, Y., Liu, W., He, P. et al. Dissolution of TiAl alloy during high temperature brazing. J Mater Sci 48, 5247–5252 (2013). https://doi.org/10.1007/s10853-013-7315-8

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