Structural-Phase States in the Head of Special-Purpose Rails after Long-Term Operation

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详细

Transmission electron microscopy methods are used to analyze the changes in the structure, phase composition, and dislocation substructure in the head of long differentially hardened special-purpose DT400IK rails made of E90KhAF steel along the radius of fillet rounding at the surface and at a distance of 2 and 10 mm from it after a passed tonnage of 187 mln t during field tests. Bend extinction contours, which indicate an elastic-stressed state of the rail head as a result of long-term operation, are found to form. The sources of lattice curvature torsion are revealed. The mechanisms of destruction of cementite lamellae and repeated precipitation of carbide-phase nanoparticles are considered.

作者简介

Yu. Ivanov

Institute of High-Current Electronics, Siberian Branch, Russian Academy of Sciences

Email: gromov@physics.sibsiu.ru
Tomsk, Russia

M. Porfir'ev

Siberian State Industrial University

Email: gromov@physics.sibsiu.ru
Novokuznetsk, Russia

V. Gromov

Siberian State Industrial University

Email: gromov@physics.sibsiu.ru
Novokuznetsk, Russia

R. Kryukov

Siberian State Industrial University

Email: gromov@physics.sibsiu.ru
Novokuznetsk, Russia

Yu. Shlyarova

Siberian State Industrial University

编辑信件的主要联系方式.
Email: gromov@physics.sibsiu.ru
Novokuznetsk, Russia

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