Dry sliding wear behaviour of heat treated iron based powder metallurgy steels with 0.3% Graphite+2% Ni additions

To determine the effect of various heat treatments on the microstructure and dry sliding wear behaviour of iron based powder metallurgy (PM) steels, atomized iron powder was mixed with 0.3% graphite + 2% Ni. The mixed powders were cold pressed at 700 MPa and sintered at 1200 °C for 30 min under pure Ar gas atmosphere. One of the sintered specimens was quenched from 890 °C and then tempered at 200 °C for 1 h. The other sintered specimens were...