Proceedings of the Korean Powder Metallurgy Institute Conference (한국분말야금학회:학술대회논문집)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Effect of Repeated Quenching Heat Treatment on Microstructure and Dry Sliding Wear Behaviour of Low Carbon PM Steel

  • Gural, Ahmet (Gazi University, Tech. Edu. Fac., Mater. Div.) ;
  • Tekeli, Suleyman (Gazi University, Tech. Edu. Fac., Mater. Div.) ;
  • Ozyurek, Dursun (Zonguldak Karaelmas Univ., Karabuk Tech. Edu. Fac. Cast. Div.) ;
  • Guru, Metin (Gazi University, Eng.&Arch. Fac., Chem. Eng. Dept.)
  • Published : 2006.09.24
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Abstract

The mixed atomized iron powders with 0.3% graphite and 1% Ni powders were cold pressed and sintered at $1200^{\circ}C$ for 30 min under pure Ar gas atmosphere. Some of the sintered specimens were intercritically annealed at $760^{\circ}C$ and quenched in water (single quenching). The other sintered specimens were first fully austenized at $890^{\circ}C$ and water quenched. These specimens were then intercritically annealed at $760^{\circ}C$ and re-quenched in water. The experimental results showed that the wear coefficient effectively decreased in the double quenched specimen.

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