Combined Thermochemical Treatment of High-Chromium Bearing Steels

{"title":"Combined Thermochemical Treatment of High-Chromium Bearing Steels","authors":"G. S. Seval’nev,&nbsp;A. E. Smirnov,&nbsp;M. Yu. Semenov,&nbsp;A. S. Nuzhnyi","doi":"10.1134/S0036029524702197","DOIUrl":null,"url":null,"abstract":"<p><b>Abstract</b>—The influence of combined thermochemical treatment consisting of preliminary vacuum nitriding, subsequent vacuum carbonitriding, and final heat treatment (quenching from repeated heating + subzero treatment at –78°C + low tempering) on the wear resistance of high-chromium martensitic bearing steels (95Kh18-Sh, 110Kh18M-ShD) is studied. The combined treatment is shown to increase the contact fatigue limit to 4900 MPa at a specific wear rate no more than (1.05–1.29) ×10^–5 mm³/(N m). Preliminary nitriding is found to positively affect wear resistance and fatigue limit, and subzero treatment negatively affects these characteristics.</p>","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2024 5","pages":"1182 - 1187"},"PeriodicalIF":0.4000,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Russian Metallurgy (Metally)","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1134/S0036029524702197","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}