Partially prealloyed steel powder containing nickel and molybdenum for ultrahigh strength sintered materials

Osamu Furukimi, Keiichi Maruta, Teruyoshi Abe, Shigeaki Takajo, Yasuhiro Habu

    Research output: Contribution to journalArticlepeer-review

    11 Citations (Scopus)

    Abstract

    The composition of nickel and molybdenum containing partially prealloyed steel powders was optimised for the production of ultrahigh strength sintered components via compaction, sintering, and heat treatment. A Fe-l Mo-2Ni powder attained a maximum tensile strength of 1920MN m-2 when double pressed, double sintered, and heat treated. Single pressed, single sintered, and case hardened compacts made from the same powder showed strengths of 1500MN m-2 which is greater than the maximum tensile strength (1300 MN m-2) of existing high strength sintered materials. The sintered compacts remained relatively soft before heat treatment, allowing machining and sizing. The strengthening is attributed to the strain induced martensitic transformation of nickel rich austenite. PM/0553.

    Original languageEnglish
    Pages (from-to)212-214
    Number of pages3
    JournalPowder Metallurgy
    Volume34
    Issue number3
    DOIs
    Publication statusPublished - Jan 1 1991

    All Science Journal Classification (ASJC) codes

    • Ceramics and Composites
    • Condensed Matter Physics
    • Mechanics of Materials
    • Metals and Alloys
    • Materials Chemistry

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