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Volume 24 Issue 5
May  2017
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文章导航 >  矿物冶金与材料学报（英文）  > 2017  >  24(5): 557-565
Chun-duo Dai, Rui-na Ma, Wei Wang, Xiao-ming Cao,  and Yan Yu, Microstructure and properties of an Al-Ti-Cu-Si brazing alloy for SiC-metal joining, Int. J. Miner. Metall. Mater., 24(2017), No. 5, pp. 557-565. https://doi.org/10.1007/s12613-017-1437-y
Cite this article as:
Chun-duo Dai, Rui-na Ma, Wei Wang, Xiao-ming Cao,  and Yan Yu, Microstructure and properties of an Al-Ti-Cu-Si brazing alloy for SiC-metal joining, Int. J. Miner. Metall. Mater., 24(2017), No. 5, pp. 557-565. https://doi.org/10.1007/s12613-017-1437-y
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研究论文

Microstructure and properties of an Al-Ti-Cu-Si brazing alloy for SiC-metal joining

  • School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, China

  • Commercial Aircraft Corporation of China, Ltd.

  • 通讯作者:

    Rui-na Ma    E-mail: maryna@126.com

  • An Al-Ti-Cu-Si solid-liquid dual-phase alloy that exhibits good wettability and appropriate interfacial reaction with SiC at 500-600℃ was designed for SiC-metal joining. The microstructure, phases, differential thermal curves, and high-temperature wetting behavior of the alloy were analyzed using scanning electron microscopy, X-ray diffraction analysis, differential scanning calorimetry, and the sessile drop method. The experimental results show that the 76.5Al-8.5Ti-5Cu-10Si alloy is mainly composed of Al-Al2Cu and Al-Si hypoeutectic low-melting-point microstructures (493-586℃) and the high-melting-point intermetallic compound AlTiSi (840℃). The contact angle, determined by high-temperature wetting experiments, is approximately 54°. Furthermore, the wetting interface is smooth and contains no obvious defects. Metallurgical bonding at the interface is attributable to the reaction between Al and Si in the alloy and ceramic, respectively. The formation of the brittle Al4C3 phase at the interface is suppressed by the addition of 10wt% Si to the alloy.
    • Research Article

    Microstructure and properties of an Al-Ti-Cu-Si brazing alloy for SiC-metal joining

    + Author Affiliations
      Abstract
    • An Al-Ti-Cu-Si solid-liquid dual-phase alloy that exhibits good wettability and appropriate interfacial reaction with SiC at 500-600℃ was designed for SiC-metal joining. The microstructure, phases, differential thermal curves, and high-temperature wetting behavior of the alloy were analyzed using scanning electron microscopy, X-ray diffraction analysis, differential scanning calorimetry, and the sessile drop method. The experimental results show that the 76.5Al-8.5Ti-5Cu-10Si alloy is mainly composed of Al-Al2Cu and Al-Si hypoeutectic low-melting-point microstructures (493-586℃) and the high-melting-point intermetallic compound AlTiSi (840℃). The contact angle, determined by high-temperature wetting experiments, is approximately 54°. Furthermore, the wetting interface is smooth and contains no obvious defects. Metallurgical bonding at the interface is attributable to the reaction between Al and Si in the alloy and ceramic, respectively. The formation of the brittle Al4C3 phase at the interface is suppressed by the addition of 10wt% Si to the alloy.
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