Information on phase transformations, solid solution alloying, compound formation, and residual stresses resulting from Ti implantation of AISI 52100 steel is obtained using57Fe Mouml;ssbauer spectroscopy. Results show that Ti implantation reduced the nearhyphen;surface (0.1 mgr;m) retained austenite content by about 70percnt; or more and evidence is found for an implantationhyphen;induced strain field which extends much deeper than the Tihyphen;implanted zone. Changes in the nearhyphen;surface martensite Mouml;ssbauer resonance are attributed to Ti on substitutional sites. Neither of the intermetallic compounds Fe2Ti or FeTi, nor the amorphous Fendash;Ti or Fendash;Tindash;C phases are unambiguously detected. However some features of the data are not explained by Ti and/or C solid solution alloy analysis and this leads to suggestions foralsim;10hyphen;nmhyphen;thick amorphous phase layer and surface oxides/carbides. The microstructural modifications are correlated with tribological properties measured on the same specimens. Improvements are attributed to the retained austenite reduction, residual compressive stresses in the nearhyphen;surface layer, and the surface compounds.
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