S. V. Skvortsova, G. T. Zainetdinova, S. M. Sarychev, M. B. Afonina, A. A. Sharonov
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Effect of Vacuum Ion-Plasma Nitriding on the Structure and Properties of a Ti-5553 Titanium Alloy
The effect of vacuum ion-plasma treatment conditions on the surface layer structure of a preliminary strengthened pseudo-β Ti-5553 titanium alloy is studied. During nitriding, the structure comprising titanium nitrides and an interstitial nitrogen solid solution in α titanium is found to form in the modified layer. Vacuum ion-plasma nitriding is shown to increase the microhardness of the surface of Ti-5553 alloy samples from 430 to 650 HV0.05, i.e., almost 1.5 times as compared to that of the state after strengthening heat treatment. The application of the TiN titanium nitride is noted to increase the microhardness by 2 times, namely, to 910 HV0.05, whereas a combination of two methods (nitriding and titanium nitride deposition) increases the microhardness to 890 HV0.05.
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.