過共晶片状黒鉛鋳鉄の減衰特性に及ぼす黒鉛形状とマトリックスの影響 Influence of Graphite Morphology and Matrix on Damping Capacity of Hypereutectic Cast Iron

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  Flake graphite cast iron is a high damping metal. Cast iron is used for engine block and brake materials in the automobile industry due to its low cost and high abrasive characteristics. High drivability characteristics of automobiles such as silence and effective braking ability are becoming more and more important recently. Since the anti-brake squeal materials are therefore needed for the brake materials, we studied the influence of graphite morphology and matrix on the damping capacity of hypereutectic cast iron.<br>  The results charified that the damping capacity of the cast iron has good correlation with the graphite shape factor <i>K</i><sub>o</sub>, length of periphery of a graphite divided by the square root of the area, and kind of matrix. The damping capacity increases with the <i>K</i><sub>o</sub> value. This means that longer and thinner graphite promotes high damping capacity. Moreover, if the matrix consists of small amounts of martensite and bainite, up to 10%, with pearlite, the damping capacity increases with the fraction of the martensite and bainite.

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 76(4), 303-308, 2004-04-25

    公益社団法人 日本鋳造工学会

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各種コード

  • NII論文ID(NAID)
    10013435663
  • 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
    6919885
  • 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  J-STAGE 
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