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Interfacial Behavior and Its Effect on Mechanical Properties of Cf/SiC Composite/TiAl6V4 Joint Brazed with TiZrCuNi

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Abstract

In order to characterize the interfacial behavior of brazed joints and offer theoretical basis for the applications of TiZrCuNi-based composite fillers, Cf/SiC composite and TC4 were brazed by TiZrCuNi filler, and the microstructures of joints versus temperature and versus holding time were systematically studied in this paper. The mechanical properties of brazed joints were measured and analyzed. The results showed that Ti(Zr)C, Ti5Si3, Ti2Cu, TiNi, TiZrCu2, Ti2(Cu,Ni) and Ti(s,s) were the predominant compounds in the joints. Brazing temperature had a distinct effect on the microstructures of joints: with the increase of brazing temperature, the structure of brazed joints was reduced from four parts to three parts, and the wavy reaction layer became continuous and much thicker. While holding time had a similar but weaker effect on microstructures: with the extension of holding time, the reaction layer became thicker, but it was difficult to induce the decrease in the structural parts of joint. The thickness of reaction layer determined the mechanical properties of joints. The results were beneficial for the selection of reinforced phases and the design of composite fillers to obtain better mechanical performances. When the brazing temperature was 940 °C and the holding time was 25 min, the maximum shear strength of brazed joints attained a value of 143.2 MPa.

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Acknowledgments

The research was supported by the National Natural Science Foundation of China (No. 51175037), People’s Republic of China.

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Authors and Affiliations

  1. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, People’s Republic of China

    Dongyu Fan, Jihua Huang, Bing Cui, Jian Yang, Shuhai Chen & Xingke Zhao

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  1. Dongyu Fan
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  2. Jihua Huang
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  3. Bing Cui
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  4. Jian Yang
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  5. Shuhai Chen
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  6. Xingke Zhao
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Correspondence to Jihua Huang.

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Fan, D., Huang, J., Cui, B. et al. Interfacial Behavior and Its Effect on Mechanical Properties of Cf/SiC Composite/TiAl6V4 Joint Brazed with TiZrCuNi. J. of Materi Eng and Perform 26, 1114–1121 (2017). https://doi.org/10.1007/s11665-017-2571-4

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  • DOI: https://doi.org/10.1007/s11665-017-2571-4

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