ADVANCEDION–PLASMASURFACEENGINEERINGOFHIGH-SPEEDSTEELCUTTINGTOOLSFORMACHININGDIFFICULT-TO-CUTALLOYS
JamshidSharipovAsiaInternationalUniversity,Bukhara,Uzbekistan
Open MINDrepository2026
ABI
Abstract
High-speedsteelcuttingtoolsarestillwidelyusedinmachiningoperationsinvolvingcomplexgeometriesandhighdynamicloads.However,theirapplicationislimitedbyintensivewearandplasticdeformationatelevatedtemperatures.Thisstudyinvestigatesacomplexion–plasmasurfacemodificationapproachcombiningionnitriding,ionalloying,andmultilayernitride-basedcoatingstoimprovethewearresistanceandoperationalstabilityofhigh-speedsteeltools.Ionnitridingwasappliedtoformahardeneddiffusionlayer,followedbyionalloyingusingNb–Hfsystemsandthedepositionofa(TiAl)N-basedcoating.Cuttingtestsperformedduringmachiningofachromium–nickelalloydemonstratedasignificantreductionincuttingforcesanda3–4-foldincreaseintoollifecomparedtoconventionallycoatedtools
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