交流磁場間欠印加による部分強化型Al基SiC粒子分散複合材料の作製 Fabrication of aluminum-matrix composites locally reinforced with SiC particles by using intermittent A.C. magnetic field

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In our previous study, aluminum matrix composites partly reinforced by SiC particles were fabricated by the imposition of a high frequency magnetic field to molten aluminum suspending SiC particles. The thickness of particle-accumulated layer (PAL) was almost the same as the skin depth that depends on the frequency of the magnetic field. In the present study, a 3 kHz magnetic field is applied to realize thicker PAL. Although a 4.71 mm PAL is expected at 3 kHz, PAL is not formed because of a strong electromagnetic flow. Intermittent imposition of magnetic field is tested to increase PAL, which seems effective to reduce the electromagnetic flow. A 4 mm PAL with dense particle packing is realized by an intermittent magnetic field composed of 1 s imposition and 1 s pausing. Numerical calculation is performed to understand the behavior of metal flow with the intermittent magnetic field. It is found that 0.5 s is required for the development of metal flow. As the relaxation time of a single SiC particle in molten aluminum is far less than 0.5 s, PAL can be formed before the metal flow develops.

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  • 軽金属  

    軽金属 57(1), 12-18, 2007-01-30 

    The Japan Institute of Light Metals

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各種コード

  • NII論文ID(NAID)
    10018494948
  • 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
    8659532
  • 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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