Dimensional change stability during heat treatment of sintered compacts made from composite-type alloyed steel powders

Keiichi Maruta, Osamu Furukimi, Shigeaki Takajo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Factors affecting dimensional change stability of sintered compacts during heat treatment have been investigated to improve dimensional precision of case-hardened compacts made from composite-type alloyed steel powders with compositions around 4%Ni-1.5%Cu-0.5%Mo. Dimensional change stability in carburized and quenched compacts is improved by increasing Ni content, since micro-strain distribution becomes more homogeneous. The size distribution of Ni-rich austenite is correlated with dimensional change stability on tempering. Such austenite phases are observed contrast by a special etching technique which enables quantitative measurements of microstructures. A composite-type alloyed steel powder containing 5.57%Ni, 1.51%Cu and 0.50%Mo with finely dispersed Ni on the iron particles provides excellent dimensional stability during the heat treatment process.

Original languageEnglish
Title of host publication1989 Advanced in Powder Metallurgy - Volume 1
PublisherPubl by MPIF Metal Powder Industries Federation
Pages351-364
Number of pages14
ISBN (Print)0918404908
Publication statusPublished - Dec 1 1989
EventProceedings of the 1989 Powder Metallurgy Conference & Exhibition - San Diego, CA, USA
Duration: Jun 11 1989Jun 14 1989

Publication series

Name1989 Advanced in Powder Metallurgy - Volume 1

Other

OtherProceedings of the 1989 Powder Metallurgy Conference & Exhibition
CitySan Diego, CA, USA
Period6/11/896/14/89

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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  • Cite this

    Maruta, K., Furukimi, O., & Takajo, S. (1989). Dimensional change stability during heat treatment of sintered compacts made from composite-type alloyed steel powders. In 1989 Advanced in Powder Metallurgy - Volume 1 (pp. 351-364). (1989 Advanced in Powder Metallurgy - Volume 1). Publ by MPIF Metal Powder Industries Federation.