The Influence of the Thermomechanical Processing Regime on the Structural Evolution of Mo-Nb-Ti-V Microalloyed Steel Subjected to High-Pressure Torsion

In the present study the effect of the thermal-mechanical processing regime—cold high-pressure torsion (HPT) at room temperature, cold HPT followed by annealing at 773 K (500 °C), and warm HPT at 723 K (450 °C)—on the peculiarities of the microstructure and microhardness of a Mo-Nb-Ti-V-0.08C microa...

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Veröffentlicht in:	Metallurgical and materials transactions. A, Physical metallurgy and materials science Physical metallurgy and materials science, 2017-07, Vol.48 (7), p.3400-3409
Hauptverfasser:	Astafurova, Elena, Maier, Galina, Melnikov, Eugene, Naydenkin, Eugene, Smirnov, Aleksander, Bataev, Vladimir, Odessky, Pavel, Dobatkin, Sergey, Maier, Hans J.
Format:	Artikel
Sprache:	eng
Schlagworte:	Annealing Characterization and Evaluation of Materials Chemistry and Materials Science Materials Science Metallic Materials Metallurgy Microalloying Microstructure Molybdenum steels Nanotechnology Steel alloys Structural Materials Surfaces and Interfaces Thermomechanical treatment Thin Films
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Zusammenfassung:	In the present study the effect of the thermal-mechanical processing regime—cold high-pressure torsion (HPT) at room temperature, cold HPT followed by annealing at 773 K (500 °C), and warm HPT at 723 K (450 °C)—on the peculiarities of the microstructure and microhardness of a Mo-Nb-Ti-V-0.08C microalloyed steel was analyzed. HPT processing resulted in high deformation and refinement of the initial structure and produced an ultrafine-grained microstructure featuring different morphologies with fine (
ISSN:	1073-5623 1543-1940
DOI:	10.1007/s11661-017-4085-y