Alloyed steel powder for powder metallurgy and iron-based mixed powder for powder metallurgy
AssigneeJfe Steel Corporation
InventorsNao Nasu, Takuya Takashita, Akio Kobayashi
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Abstract
Disclosed is an alloyed steel powder for powder metallurgy from which sintered parts that do not contain expensive Ni, or Cr or Mn susceptible to oxidation, that have excellent compressibility, and that have high strength in an as-sintered state can be obtained. The alloyed steel powder for powder metallurgy has: a chemical composition containing Mo: 0.5 mass % to 2.0 mass % and Cu: 1.0 mass % to 8.0 mass %, with the balance being Fe and inevitable impurities; and a microstructure in which an FCC phase is present at a volume fraction of 0.5% to 10.0%.
Claims3
An alloyed steel powder for powder metallurgy comprising:
- a chemical composition containing Mo:
- 0.5 mass % to 2.0 mass %, and Cu:
- 1.0 mass % to 8.0 mass %, with the balance being Fe and inevitable impurities;
- and
- a microstructure in which an FCC phase is present at a volume fraction of 0.5% to 10.0%.
Dependencies are inferred from the claim text.