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 journalArticle

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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