Effect of Normal Load and Temperature on the Tribo-Corrosion Behaviors of 20CrMnTi Alloy Steel

The application of 20CrMnTi alloy steel in the fabrication of gearboxes for colliery and chemical industries is widespread. Recognized as a crucial transmission component in mechanical equipment, gearboxes, owing to their intricate internal structures, are susceptible to wear. Employing a reciprocating sliding wear tester and electrochemical equipment, this study investigates the tribo-corrosion damage mechanism across varying normal loads and temperatures. Results show that heightened normal loads or temperatures distinctly contribute to increased material surface deformation, consequently elevating wear and diminishing corrosion resistance. In addition, the primary damage mechanisms manifest as abrasive wear and fatigue peeling. The present work highlights the scientific understanding of fretting tribo-corrosion phenomenon in 20CrMnTi alloy steel, elucidates the key mechanisms and factors involved in the decay behavior of 20CrMnTi alloy steel, a gearbox material, and helps to prevent the failure of gearbox components.