New composite-type alloyed 2%Ni-1%Mo steel powder for ultrahigh-strength sintered components

Osamu Furukimi, Koji Yano, Shigeaki Takajo

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

7 被引用数 (Scopus)

抄録

The compacts made from a newly developed composite-type alloyed steel powder with 2%Ni and 1%Mo show superior mechanical properties after heat treatment. The case-hardened compacts show tensile strength of 1500MPa, absorbed energy of 21J, rotating bending fatigue strength of 460MPa and contact fatigue strength of 2560MPa. All of them exceed the corresponding values of the compacts made from a conventional 4%Ni-0.5%Mo-1.5%Cu steel powder, which are 1380MPa, 20J, 410MPa and 2430MPa, respectively. Double-pressed, double-sintered, bright-quenched and tempered compacts made from the new powder show ultrahigh tensile strength of 1920MPa with considerably high absorbed energy of 53J. The extraordinary strengthening is attributed to the strain-induced transformation of Ni-rich austenite to martensite. The sintered and heat-treated compacts made from the new powder contain a sufficient amount of austenite which transforms almost completely to martensite during loading.

本文言語英語
ホスト出版物のタイトルP/M Materials
編集者 Anon
出版社Publ by Metal Powder Industries Federation
ページ59-67
ページ数9
5
ISBN(印刷版)1878954121
出版ステータス出版済み - 1991
外部発表はい
イベントProceedings of the 1991 Powder Metallurgy Conference and Exhibition - Chicago, IL, USA
継続期間: 6 9 19916 12 1991

その他

その他Proceedings of the 1991 Powder Metallurgy Conference and Exhibition
CityChicago, IL, USA
Period6/9/916/12/91

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Metals and Alloys

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