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首页> 外文期刊>Journal of Materials Science >Diffusion bonding of nickel-based superalloy GH4099 with pure nickel interlayer
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Diffusion bonding of nickel-based superalloy GH4099 with pure nickel interlayer

机译：镍基超合金GH4099与纯镍层间的扩散键合

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摘要

The nickel-based superalloy GH4099 was diffusion-bonded with 2-10m thick pure nickel interlayer. The joint microstructure was characterized by scanning electron microscopy, electron probe micro-analyzer and electron backscattered diffraction; the joint mechanical properties were evaluated by nanoindentation, tensile and Charpy impact tests. It was observed that with the reduction in interlayer thickness, element distribution and hardness across the joining interface became more homogeneous and subsequently produced sound joints due to the suppression of precipitated carbides on joining interface. The strengths of joints were in the range of the base metal as-received. When bonding time or temperatures increased, the bond line of the 2m interlayer joint was partially eliminated by the recrystallization across the joining interface, and the strength and elongation (or the absorbed energy) of the joint were same as (or close to) the base metal which underwent the same heating process. However, due to the microstructure degradation induced by the grain coarsening, the absorbed energy of the 2m interlayer joint reaches the maximum when the joint bonded under the moderate condition of 1120 degrees C and 90min.
机译：基于镍的超合金GH4099与2-10m厚的纯镍中间层扩散键合。通过扫描电子显微镜，电子探针微分析仪和电子反向散射衍射的特征在于联合微结构;通过纳米凸缘，拉伸和夏奇的冲击试验评估关节机械性能。据观察，在中间层厚度，元件分布和硬度横跨接合界面的降低变得更均匀，并随后产生的声音接头由于在接合界面析出碳化物的抑制。接头的强度在接收的基础金属的范围内。当键合时间或温度增加时，通过在连接界面上重结晶部分地消除了2M中间界面的键合线，并且关节的强度和伸长率（或吸收能量）与基部相同（或接近）经过相同的加热过程的金属。然而，由于晶粒粗化诱导的微观结构降解，2M中间接头的吸收能量在1120℃和90min的中等条件下粘合的接头达到最大值。

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  • 来源
    《Journal of Materials Science》 |2019年第8期|共13页
  • 作者

    Xiong Jiangtao; Yuan Lin; Zhu Yuan; Zhang Hao; Li Jinglong;

  • 作者单位

    Northwestern Polytech Univ Shaanxi Key Lab Frict Welding Technol Xian 710072 Shaanxi Peoples R China;

    Northwestern Polytech Univ Shaanxi Key Lab Frict Welding Technol Xian 710072 Shaanxi Peoples R China;

    Shanghai Inst Radio Equipment Shanghai 200090 Peoples R China;

    Northwestern Polytech Univ Shaanxi Key Lab Frict Welding Technol Xian 710072 Shaanxi Peoples R China;

    Northwestern Polytech Univ Shaanxi Key Lab Frict Welding Technol Xian 710072 Shaanxi 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;
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