船舶プロペラ用アルミニウム青銅の表面硬化特性 Surface Hardening Characteristics of Aluminum Bronze for Marine Propeller

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Surface hardening of propeller material brings many advantages such as superior erosion resistance and increase of propeller efficiency. This study investigates the surface hardening characteristics and erosion resistance of AlBC3 treated by flame, induction and laser hardenings in view of the metallographic aspect. The microstructures and distributions of alloying elements of the test specimens were examined using a microscope and EPMA. Iorniny test and ultrasonic erosion test were also conducted to evaluate the depth of surface hardening and the cavitation erosion resistance. The tests revealed that surface hardened by flame hardening is about 1.5 times harder than the as-cast and the hardness is closely related to the area ratio of the hard /β + β' phase to a phase on the microstructure. Laser hardening also produces harder surface, but the hardened layer is much thinner as compared to flame hardening thus contributing to the improvement of the erosion resistance of AlBC3 and is suitable for application to actual propellers.

  Surface hardening of propeller material brings many advantages such as superior erosion resistance and increase of propeller efficiency. This study investigates the surface hardening characteristics and erosion resistance of AlBC3 treated by flame, induction and laser hardenings in view of the metallographic aspect. The microstructures and distributions of alloying elements of the test specimens were examined using a microscope and EPMA. Jominy test and ultrasonic erosion test were also conducted to evaluate the depth of surface hardening and the cavitation erosion resistance. The tests revealed that surface hardened by flame hardening is about 1.5 times harder than the as-cast and the hardness is closely related to the area ratio of the hard <i>β</i> + <i>β</i>' phase to <i>α</i> phase on the microstructure. Laser hardening also produces harder surface, but the hardened layer is much thinner as compared to flame hardening thus contributing to the improvement of the erosion resistance of AlBC3 and is suitable for application to actual propellers.

収録刊行物

  • 鋳造工学 = Journal of Japan Foundry Engineering Society

    鋳造工学 = Journal of Japan Foundry Engineering Society 69(5), 397-402, 1997-05

    日本鋳造工学会

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各種コード

  • NII論文ID(NAID)
    10003800275
  • NII書誌ID(NCID)
    AN10514770
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    13420429
  • NDL 記事登録ID
    4217019
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-277
  • データ提供元
    CJP書誌  NDL  IR  J-STAGE 
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