Fretting wear behavior of GH2132 superalloy at different temperatures

Abstract

To investigate the loosening failure mechanism of bolted joint structures in aero-engines caused by fretting damage, an experimental investigation was conducted to analyze the fretting wear behavior and failure mechanisms of GH2132 superalloy under varying temperature conditions in the present study. The results revealed a significant reduction in the wear rates of the specimen at 600°C compared to both room temperature and 300°C. Compared with room temperature, the wear rates of the specimen at 600°C decreased by 39.38 µm³/mJ in the mixed regime and 43.89 µm³/mJ in the slip regime. The formation of a dense and intact third-body layer was identified as a key factor in mitigating fretting wear damage.