The effectiveness of protective layer in reducing fretting wear of Alloy 690TT tubes/405 stainless steel plates

Fretting experiments of Alloy 690TT tubes against 405 stainless steel (405 SS) plates were carried out to evaluate the influence of temperature on fretting performance of Alloy 690TT tubes in air. The results indicated that an adhesive and smooth protective third body layer was generated on Alloy 690TT tubes above a certain temper-ature, between 150 & DEG;C and 200 & DEG;C for given conditions. The protective layer was a mixture of oxides and transferred 405 SS, which was directly associated with fretting conditions. Thus, a wear transition map of Alloy 690TT was established. Besides, the results of this work also revealed that the plastic deformation of 285 & DEG;C was slighter than that of 150 & DEG;C.

Automated summary

Fretting experiments were conducted on Alloy 690TT tubes and 405 stainless steel plates to investigate the effect of temperature on fretting performance. The results showed that a protective third body layer consisting of oxides and transferred 405 SS was formed on Alloy 690TT tubes between 150°C and 200°C. This layer was directly related to the fretting conditions. A wear transition map of Alloy 690TT was also established. Additionally, it was found that the plastic deformation was less pronounced at 285°C compared to 150°C.