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首页> 外文期刊>Materials Science and Engineering >Correlation between microstructure and mechanical properties of active brazed C_f/SiC composite joints using Ti-Zr-Be
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Correlation between microstructure and mechanical properties of active brazed C_f/SiC composite joints using Ti-Zr-Be

机译：Ti-Zr-Be对活性钎焊C_f / SiC复合材料接头组织和力学性能的影响

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摘要

C_f/SiC composites were successfully active brazed by Ti-Zr-Be filler foil. The microstructure of the brazed joints was investigated by auger electron spectroscopy (AES) and scanning electron microscope (SEM) equipped with energy dispersive spectrometer (EDS). The phase structure was determined by X-ray diffraction (XRD). The mechanical property was measured by mechanical testing machine. The results indicate that the brazed joint consisted of TiC, Ti_3SiC_2, ZrC, Be_2C Be_(17)Ti_2 and Ti-based solid solution (β-Ti). TiC+Ti_3SiC_2/ZrC+Ti(Zr)-Si-C+Be_2C reaction layers were formed near C_f/SiC composite side while the reaction layer of β-Ti+Be_(17)Ti_2+Ti(Zr)_3SiC_2 with a small amount of ZrC, TiSi_2, Be_2C particles was formed in the center of the joint. With the increase of the brazing temperature or holding time, the amount of β-Ti compound in the interlayer decreased gradually while the thickness of reaction layer increased gradually. When the brazing temperature was 1000 ℃ and the holding time was 15 min, the maximum room temperature shear strength of the brazed joint can be achieved, which was 136.63 MPa. The joints with the parameters of 950 ℃/30 min, 1000 ℃/15 min and 1050 ℃/5 min could resist a pressure of 5 MPa at 1200 ℃ for 5 min.
机译：C_f / SiC复合材料成功地被Ti-Zr-Be填充箔钎焊。钎焊接头的微观结构通过俄歇电子能谱（AES）和配有能量色散谱仪（EDS）的扫描电子显微镜（SEM）进行了研究。通过X射线衍射（XRD）确定相结构。力学性能通过机械测试仪测量。结果表明，钎焊接头由TiC，Ti_3SiC_2，ZrC，Be_2C Be_（17）Ti_2和Ti基固溶体（β-Ti）组成。在C_f / SiC复合材料侧附近形成TiC + Ti_3SiC_2 / ZrC + Ti（Zr）-Si-C + Be_2C反应层，而少量的β-Ti+ Be_（17）Ti_2 + Ti（Zr）_3SiC_2反应层形成ZrC，TiSi_2，Be_2C的颗粒形成在接头的中心。随着钎焊温度或保温时间的增加，中间层中β-Ti化合物的量逐渐减少，而反应层的厚度逐渐增加。当钎焊温度为1000℃，保温时间为15 min时，钎焊接头的最大室温剪切强度为136.63 MPa。参数为950℃/ 30 min，1000℃/ 15 min和1050℃/ 5 min的接头在1200℃下可承受5 MPa的压力5分钟。

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  • 来源
    《Materials Science and Engineering》 |2016年第14期|332-339|共8页
  • 作者

    Dongyu Fan; Jihua Huang; Xiaowei Sun; Jian Yang; Shuhai Chen; Xingke Zhao;

  • 作者单位

    School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, PR China;

    School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, PR China;

    School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, PR China;

    School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, PR China;

    School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, PR China;

    School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, PR China;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    C_f/SiC composite; Ti-Zr-Be alloy; Microstructure; Mechanical properties;

    机译：C_f / SiC复合材料;Ti-Zr-Be合金;微观结构机械性能;

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