電子ビーム溶接したNi基超合金/合金鋼異材接合部のミクロ組織と引張強度 Microstructure and tensile strength of electron-beam-welded Nickel base-superalloy/alloy steel dissimilar joints

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著者

    • 大岩 直貴 OIWA Naoki
    • 株式会社IHI技術開発本部 生産技術センター IHI Corporation, Research & Development, Production Engineering Center
    • 熊井 真次 KUMAI Shinji
    • 東京工業大学 総合理工学研究科 材料物理科学専攻 Tokyo Institute of Technology, Dept. of Materials Science & Engineering

抄録

Dissimilar joints between Ni-base superalloy, which is available for turbine impeller for turbocharger, and alloy steel were fabricated by electron beam welding and their microstructure and tensile strength at a room temperature were examined. Macroscopic appearance of the weld part was similar in both joints, however, tensile strength of 247 alloy / SCM435H was smaller than that of 713C alloy / SCM435H joint, and feature of hot-tear fracture was more evident in the fracture surface. SEM-EDX analysis for the weld part found that a 10μm wide solute-segregated region traced the weld interface located in the superalloy side. Small hot-tear cracks were observed only in the segregated region of 247 alloy / SCM435H joint. These hot tear is likely to be distributed over single plane, so have significant effect to joint strength in some case of stress direction.

収録刊行物

  • 溶接学会論文集 : quarterly journal of the Japan Welding Society

    溶接学会論文集 : quarterly journal of the Japan Welding Society 29(1), 35-40, 2011-12-31

    一般社団法人 溶接学会

参考文献:  11件中 1-11件 を表示

各種コード

  • NII論文ID(NAID)
    10030150545
  • NII書誌ID(NCID)
    AN1005067X
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    02884771
  • データ提供元
    CJP書誌  J-STAGE 
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