LAUSR

Abstract SAF 2507 super duplex stainless steel (SAF 2507 SDSS) is widely used in industrial fields while its fretting wear mechanism at high temperatures has not been well studied. In this paper, fretting behavior of SDSS in a wide temperature range from 25 °C to 800 °C at 20 N and 50 N has been studied. It is found that fretting wear behavior of SDSS is influenced by both temperature and load. Elevated temperature induces both surface softening and formation of oxide layer (Fe3O4 and α-Fe2O3). Compared with 20 N, oxide layer at higher load of 50 N is easier to transfer onto the counterpart surface under interrelated effects of heating temperature and applied load, finally leading to higher wear loss.