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

Мұқаба

Дәйексөз келтіру

Толық мәтін

Ашық рұқсат Ашық рұқсат
Рұқсат жабық Рұқсат берілді
Рұқсат жабық Рұқсат ақылы немесе тек жазылушылар үшін

Аннотация

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.

Авторлар туралы

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

Хат алмасуға жауапты Автор.
Email: gromov@physics.sibsiu.ru
Novokuznetsk, Russia

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