Multiscale insights into temperature effects on the sliding wear of a martensitic stainless steel

The sliding wear behavior of a high-strength martensitic stainless steel (6Cr15Mo4VN/6YC7), commonly used in high-temperature components such as control rod drive mechanisms (CRDM) in nuclear reactors, was systematically investigated at varying temperatures (room temperature, 100 °C, and 300 °C) to assess its tribological performance by multiscale characterization. The effects of temperature on wear resistance, microstructural changes, and wear mechanisms were evaluated through measurements of coefficient of friction (COF), wear rate, wear scar morphology, and oxide layer characteristics. The results show a slight decrease in hardness with increasing temperature, but a significant deterioration in wear…

• NN
  National Natural Science Foundation of China

  Awards: 52471043, 52127801, 22GFC-JJ12-477, 23GFC- JJ12-941
• CN
  China National Nuclear Corporation