低炭素鋼の時効中の炭化物形成におよぼす添加元素の影響についてのモデル化からの検討(物理的性質) Analysis of Carbide Precipitation with Alloy Element during Aging of Low Carbon Steel by Modeling(Physical Properties)

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Over aged samples with Mo added steel after quenching show high tensile strength than that of without Mo steel and show peculiar BH curve plotted against over aging time. To analyze these phenomena, kinetic model for carbide precipitation was derived, which deal with both cementite and cluster. The following results are obtained. (1) Low carbon steel with Mo, clusters are formed at room temperature after quenching. The site number used for cluster is 10^<15>/mm^3, which indicates Mo-C dipole is considerd to be the site of cluster nucleation. Clusters are dissolved with the aging temperature at 200℃ in short time. (2) Clusters are dissolved during BH treatment (170℃×20min), which reduce the BH value for the sample without over aging. On the othe hand, the drop of BH with 200℃×10min over aging is lower, because clusters are dissolved during over aging. This causes that BH plotted against aging time shows the curve with peak. (3) The strength by calculation in the case of lower carbon show less value than that of higher carbon case, because cluster nucleation rate deeply depends on carbon content.

収録刊行物

  • 鐵と鋼 : 日本鐡鋼協會々誌

    鐵と鋼 : 日本鐡鋼協會々誌 92(6), 385-392, 2006-06-01

    社団法人日本鉄鋼協会

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各種コード

  • NII論文ID(NAID)
    110004718537
  • NII書誌ID(NCID)
    AN00151251
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    00211575
  • NDL 記事登録ID
    7973835
  • NDL 雑誌分類
    ZP42(科学技術--金属工学・鉱山工学--鉄鋼)
  • NDL 請求記号
    Z17-356
  • データ提供元
    CJP書誌  NDL  NII-ELS  J-STAGE 
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