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首页> 外文会议>XV international conference on electron microscopy >Electron microscopy investigation of Inconel 625 weld overlay on boiler steel
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Electron microscopy investigation of Inconel 625 weld overlay on boiler steel

机译：锅炉钢上Inconel 625堆焊层的电子显微镜检查

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摘要

The investigation was focused on the microstructure characterization as well as changes in chemical composition and hardness of water wall tubing weld overlaid with Inconel 625. The analysis comprised studies in a light and electron microscopy scale that included the evaluation of weld overlays microstructure and microsegregation of alloying elements across the overlay and base metal interface. The particular attention was turned to the distribution of the main element content (Fe, Ni, Mo, Nb, Cr) in the base metal fusion zone as well as in the weld overlay itself. It was shown that the solidification process resulted in significant segregation in alloying elements giving rise to the substantial differences in chemical composition between dendrite cores and interdendritic spaces. It is believed that the microsegregation together with precipitation of secondary phases may contribute to the deterioration of corrosion resistance and overall mechanical properties of weld overlay including ductility and fracture toughness.
机译：该调查的重点是Inconel 625覆盖的水冷壁管焊缝的微观结构表征以及化学成分和硬度的变化。该分析包括在光学和电子显微镜下的研究，包括评估焊缝覆盖层的微观结构和合金的微观偏析。覆盖层和贱金属界面上的元素。特别关注的是贱金属熔合区以及堆焊层本身中主要元素含量（Fe，Ni，Mo，Nb，Cr）的分布。结果表明，凝固过程导致合金元素显着偏析，从而导致枝晶核与枝晶间空间的化学成分发生实质性差异。可以相信，微观偏析和第二相的沉淀可能会导致耐蚀性的下降以及焊缝堆焊层的整体机械性能（包括延展性和断裂韧性）的下降。

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  • 来源
  • 会议地点 Krakow(PL)
  • 作者

    PETRZAK Paweł; BLICHARSKI Marek; DYMEK Stanisław; SOLECKA Monika;

  • 作者单位

    AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Department of Surface Engineering Materials Characterization, 30 Mickiewicza Av. 30-059 Krak6w, Poland;

    AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Department of Surface Engineering Materials Characterization, 30 Mickiewicza Av. 30-059 Krak6w, Poland;

    AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Department of Surface Engineering Materials Characterization, 30 Mickiewicza Av. 30-059 Krak6w, Poland;

    AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Department of Surface Engineering Materials Characterization, 30 Mickiewicza Av. 30-059 Krak6w, Poland;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Inconel 625; cladding; microsegregation; boiler; cold metal transfer (CMT);

    机译：因科镍合金625;覆层微偏析锅炉;冷金属转移（CMT）;

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