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

doi:10.2497/jjspm.37.225

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

Materials Processing

Research output: Contribution to journal › Article

1 Citation (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	225-228
Number of pages	4
Journal	Journal of the Japan Society of Powder and Powder Metallurgy
Volume	37
Issue number	2
DOIs	https://doi.org/10.2497/jjspm.37.225
Publication status	Published - Jan 1 1990

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All Science Journal Classification (ASJC) codes

Mechanical Engineering
Metals and Alloys
Industrial and Manufacturing Engineering
Materials Chemistry

Cite this

Furukimi, O., Maruta, K., Abe, T., & Takajo, S. (1990). 2%Ni-1%Mo Composite-type Alloyed Steel Powder for Ultra High Strength and High Toughness Sintered Materials. Journal of the Japan Society of Powder and Powder Metallurgy, 37(2), 225-228. https://doi.org/10.2497/jjspm.37.225

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Access to Document

10.2497/jjspm.37.225