高炭素高速度鋼系合金の凝固と熱処理硬さに及ぼす合金元素の影響 Effects of Alloying Elements on Solidification Process and Hardenability of High Carbon High Speed Steel Type Alloy

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  The effects of alloying elements on the solidification process of high carbon high speed steel type alloy were investigated by using a series of hypo-eutectic alloys of Fe-2% C-5% Cr-5% Mo-5.5% V-0/5% W-0/5% Co-0/5% Ni and a hyper-eutectic Fe-2.3% C-5% Cr-5% Mo-9% V-5% W-5% Co alloy. The solidification process of each alloy was investigated by thermal analysis and quenching experiments. In each hypo-eutectic alloy, crystallization proceeds in the order of primary <i>γ</i>, <i>γ</i> + MC eutectic, <i>γ</i> + M<sub>2</sub>C eutectic, while the primary MC instead of <i>γ</i> crystallizes in the hyper-eutectic alloy. The amount and distribution of each carbide are explained with the phase diagram and the redistribution of alloying elements during solidification. The hardness of quenched alloy was maximum at an austenitizing temperature between 1273 K and 1373 K since the hardness depends on both the amount and hardness of martensite, that is the carbon content of austenite. Each alloy was found to exhibit a temper hardening, Co in particular enhanced the hardness when the alloy was tempered at around 823K.

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 70(5), 309-315, 1998-05

    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)
    10002553772
  • 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
    4470661
  • 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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