An Influence of Strain-Induced Nucleation of Martensitic Transformations on Tribological Properties of Sprayed and Surfaced Depositions

Abstract Previous studies have shown that austenite-to-martensite transformations occur in certain ferrous materials under an applied load, along with synergistic improvements in hardness and wear resistance. The aim of this study is to investigate the effects of such transformations on the tribological properties of chromium steel (FeCCrTiAl) coatings and overlays. The coatings were produced by arc wire spraying and the overlays by arc surfacing. Microstructure and phase composition were analyzed and abrasive and adhesive wear tests were conducted. Strain-induced nucleation of martensite under external load was confirmed by structural changes and differences in the tribological properties of the coatings and overlays were attributed to the particular conditions of their formation.