Abstract
Wear variations of Nimonic 80A slid against Incoloy 800HT between room temperature (RT) and 750 °C, and sliding speeds of 0.314 and 0.905 m s −1 were investigated using a ‘reciprocating-block-on-cylinder’, low debris retention configuration. These were considered alongside previous observations at 0.654 m s −1. Different wear types occurring were mapped, including high transfer ‘severe wear’ (RT and 270 °C, also 0.905 m s −1 at ≤570°C), low transfer ‘severe wear’ (0.314 m s −1 at 390 °C to 510 °C oxide abrasion assisted at 510 °C), and ‘mild wear’ (0.314 m s −1 at ≥570 °C; 0.905 m s −1 at ≥630 °C). Wear surfaces at 750 °C were cross-sectioned and profiled.
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