2%Ni-1%Mo Composite-type Alloyed Steel Powder for Ultra High Strength and High Toughness Sintered Materials

Osamu Furukimi, Keiichi Maruta, Teruyoshi Abe, Shigeaki Takajo

    研究成果: ジャーナルへの寄稿学術誌査読

    1 被引用数 (Scopus)

    抄録

    The composition of Ni and Mo containing composite-type alloyed steel powders was optimized for the production of ultra high strength, high toughness sintered components via compaction, sintering and heat treatment. A powder with 2%Ni and 1%Mo attained a high tensile strength of 1500MPa and a high unnotched Charpy impact value of 21J, when single-pressed, single-sintered and case hardened. Double-pressed, double-sintered and heat treated compacts made from the same powder showed an extremely high tensile strength of 1920MPa and a high unnotched Charpy impact value of 53J. The sintered compacts before heat treatment remained relatively soft and allowed machining and sizing. The strengthening was attributed to the strain-induced martensitic transformation of Ni-rich austenite.

    本文言語英語
    ページ(範囲)225-228
    ページ数4
    ジャーナルJournal of the Japan Society of Powder and Powder Metallurgy
    37
    2
    DOI
    出版ステータス出版済み - 1990

    All Science Journal Classification (ASJC) codes

    • 機械工学
    • 産業および生産工学
    • 金属および合金
    • 材料化学

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