High temperature sliding wear behaviour of Inconel 617 and Stellite 6 alloys

The high temperature wear performance of Inconel 617 and Stellite 6 alloys was investigated and compared with that of the X32CrMoV33 hot work tool steel. The wear performance of the latter at 750 °C is judged to be very poor due basically to its inferior oxidation resistance. Extensive oxidation co-occurring with wear at 750 °C leads to substantial material loss basically due to the lack of an adhesive oxide scale, sufficiently ductile to sustain the wear action without extensive spalling. The wear resistance of the Inconel 617 and Stellite 6 alloys at 750 °C is relatively superior. The adhesive oxides growing slowly on Inconel 617 and Stellite 6 alloys sustain the wear action without spalling and are claimed to be responsible for the superior wear resistance of these alloys at 750 °C.