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首页> 外文期刊>Materials Characterization >Interfacial microstructure and mechanical property of ZrC-SiC ceramic and TiAl joint brazed with Ag-Zf active filler metal
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Interfacial microstructure and mechanical property of ZrC-SiC ceramic and TiAl joint brazed with Ag-Zf active filler metal

机译：Zrc-SiC陶瓷和Tial钎料与Ag-ZF活性填料钎料的界面微观结构和力学性能

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摘要

Reliable brazing of ZrC-SiC ceramic and TiAl alloy was achieved using active Ag-Zr filler metal. During the brazing process, Ti and Al were dissolved into the filler metal, and TiC+ (Ti,Zr)(3)SiC2 layer formed due to the reaction between the ZrC-SiC and Ti. Meanwhile, strong affinity of Ti, Al and Zr produced dispersive (Ti,Zr) (Al,Ag) in the brazing seam. The effect of Zr content and holding time on the microstructure and mechanical property of the joints was investigated. With the increase of Zr content, the formation of (Ti,Zr)(Al,Ag) phase was promoted and its volume became large. The consumption of Ti in (Ti,Zr)(Al,Ag) phase restrained the formation of TiC, decreasing the thickness of TiC layer. Excess Zr addition could induce large bulks of (Ti,Zr)(AI,Ag) and cracks in the brazing seam. The holding time mainly affected the distribution of Ti-Zr-Al-Ag phases in the brazing seam. The joint strength reached a maximum value of 65 MPa when the Zr content of the filler was 5 wt% and holding time was 5 min. The crack propagated in the ZrC-SiC ceramic substrate.
机译：使用活性Ag-Zr填充金属实现可靠的ZrC-SiC陶瓷和TiAL合金。在钎焊过程中，由于ZrC-SiC和Ti之间的反应，将Ti和Al溶解在填充金属中，并形成TiC +（Ti，Zr）（3）SiC 2层。同时，Ti，Al和Zr的强烈亲和力在钎焊缝中产生了分散（Ti，Zr）（Al，Ag）。研究了Zr含量和保持时间对关节的微观结构和力学性能的影响。随着Zr含量的增加，促进了（Ti，Zr）（Al，Ag）相的形成，其体积变大。 （Ti，Zr）（Al，Ag）相的Ti的消耗抑制了TIC的形成，降低了TIC层的厚度。过量的Zr添加可以诱导钎焊缝中的大块（Ti，Zr）（Ai，Ag）和裂缝。保持时间主要影响钎焊接缝中Ti-Zr-Al-Ag相的分布。当填料的Zr含量为5wt％并保持时间为5分钟时，关节强度达到最大值65MPa。在ZrC-SiC陶瓷基材中传播的裂缝。

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  • 来源
    《Materials Characterization》 |2019年第2019期|共8页
  • 作者

    Shi Junmiao; Wang Qian; Li Jinglong; Xiong Jiangtao; Zhang Lixia; Feng Jicai;

  • 作者单位

    Northwestern Polytech Univ State Key Lab Solidificat Proc Xian 710072 Shaanxi Peoples R China;

    Osaka Univ Joining &

    Welding Res Inst Ibaraki Osaka 5670047 Japan;

    Northwestern Polytech Univ State Key Lab Solidificat Proc Xian 710072 Shaanxi Peoples R China;

    Northwestern Polytech Univ State Key Lab Solidificat Proc Xian 710072 Shaanxi Peoples R China;

    Harbin Inst Technol State Key Lab Adv Welding &

    Joining Harbin 150001 Heilongjiang Peoples R China;

    Harbin Inst Technol State Key Lab Adv Welding &

    Joining Harbin 150001 Heilongjiang Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;
  • 关键词

    ZrC-SiC ceramic; Zr content; Interfacial reaction; Brazing;

    机译：Zrc-SiC陶瓷;ZR含量;界面反应;钎焊;

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