Microstructure and dry sliding wear properties of 3Si-2Ni and 3Si-2Mn powder metallurgy steels with different graphite content

Tekeli S., Gural A., Ozyurek D.

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY, cilt.225, ss.814-820, 2011 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 225
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1177/1350650111405255
  • Dergi Adı: PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY
  • Sayfa Sayıları: ss.814-820

Özet

In this study, plain iron powder (ASC.100.29) was mixed with 0.35-1.1 % graphite + 3 % Si + 2 % Ni and 0.35-1.1 % graphite + 3 % Si + 2 % Mn powders. While coarse pearlitic structure with homogeneous distribution of Mn was obtained in Mn-added specimens, Ni-rich austenitic areas with divorced pearlite structure were observed in Ni-added specimens. Wear tests were carried out at a load of 50 N. The experimental results showed that the highest wear resistance was obtained in the Ni-added specimen. While subsurface brittle cracking caused more wear in the Mn-added specimens, the wear occured by plastic deformation of surface Ni-added specimens.