アルミニウム合金急冷凝固粉末を溶射した6063アルミニウム合金押出材のNd-YAGレーザによる表面改質 Surface modification of extruded 6063 aluminum alloy sprayed with atomized powder of aluminum alloys using Nd-YAG laser

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著者

    • 小久保 貞男 KOKUBO Sadao
    • 昭和アルミニウム(株)研究開発部技術研究所 SHOWA ALUMINUM CORPORATION, Research & Development Department, Technical Research Laboratories
    • 榎本 正敏 ENOMOTO Masatoshi
    • 昭和アルミニウム(株)研究開発部技術研究所 SHOWA ALUMINUM CORPORATION, Research & Development Department, Technical Research Laboratories
    • 安部 慎哉 [他] ABE Shinya
    • 昭和アルミニウム(株)研究開発部技術研究所 SHOWA ALUMINUM CORPORATION, Research & Development Department, Technical Research Laboratories

抄録

Laser remelting process with Nd–YAG laser is investigated in order to improve the adhesion and wear resistance of low pressure plasma sprayed layer on the surface of aluminum extruded plate (6063) using the atomized powder of Al–50 mass%Fe, Al–15 mass%Fe–17 mass%Si and Al–50 mass%Si. The effects of pulse energy of laser beam on the microstructure, the microhardness, and the wearing rate of these laser-remelted layers are examined. Laser-remelted layer has smoother surface and better adhesion than those of the layer as sprayed. The microhardness of laser-remelted layer is kept constant toward the depth direction. In the microstructure of laser-remelted layer of Al–50 mass%Fe, fine needle-like Al<sub>3</sub>Fe and massive Al<sub>2</sub>Fe is dispersed. The microhardness increases with a decrease of the pulse energy of laser beam, but the wearing rate of laser-remelted layer increases due to the initiation of cracking. In the matrix of Al–15 mass%Fe–17 mass%Si laser-remelted layer, ultra fine needle-like and massive (Al, Fe, Si) ternary crystals are aggregated. In the microstructure of Al–50 mass%Si laser-remelted layer is ultra fine hypereutectic. Microhardnesses of these layers which are remelted at any pulse energy are HV250–350, HV150–200, respectively, and these wearing rates of them are 1/7 or less than anodized surface.

収録刊行物

  • 軽金属

    軽金属 47(1), 21-27, 1997-01-30

    The Japan Institute of Light Metals

参考文献:  6件中 1-6件 を表示

被引用文献:  1件中 1-1件 を表示

各種コード

  • NII論文ID(NAID)
    10003794843
  • NII書誌ID(NCID)
    AN00069773
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    04515994
  • NDL 記事登録ID
    4118760
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-284
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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