高铬轴承钢的复合热化学处理

IF 0.3 Q4 METALLURGY & METALLURGICAL ENGINEERING Russian Metallurgy (Metally) Pub Date : 2025-02-10 DOI:10.1134/S0036029524702197

G. S. Seval’nev, A. E. Smirnov, M. Yu. Semenov, A. S. Nuzhnyi

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引用次数: 0

摘要

摘要：研究了先真空氮化、后真空碳氮化、后热处理（反复加热淬火+ -78℃低温热处理+低回火）复合热化学处理对高铬马氏体轴承钢（95Kh18-Sh、110Kh18M-ShD）耐磨性的影响。复合处理可将接触疲劳极限提高到4900 MPa，比磨损率不大于（1.05-1.29）×10-5 mm3/(N m)。初步渗氮对耐磨性和疲劳极限有积极影响，而低温处理对这些特性有消极影响。

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Combined Thermochemical Treatment of High-Chromium Bearing Steels

Abstract—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.

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来源期刊

Russian Metallurgy (Metally) METALLURGY & METALLURGICAL ENGINEERING-

CiteScore

0.70

自引率

25.00%

发文量

140

期刊介绍： Russian Metallurgy (Metally) publishes results of original experimental and theoretical research in the form of reviews and regular articles devoted to topical problems of metallurgy, physical metallurgy, and treatment of ferrous, nonferrous, rare, and other metals and alloys, intermetallic compounds, and metallic composite materials. The journal focuses on physicochemical properties of metallurgical materials (ores, slags, matters, and melts of metals and alloys); physicochemical processes (thermodynamics and kinetics of pyrometallurgical, hydrometallurgical, electrochemical, and other processes); theoretical metallurgy; metal forming; thermoplastic and thermochemical treatment; computation and experimental determination of phase diagrams and thermokinetic diagrams; mechanisms and kinetics of phase transitions in metallic materials; relations between the chemical composition, phase and structural states of materials and their physicochemical and service properties; interaction between metallic materials and external media; and effects of radiation on these materials.