Formation of Gradient Structure–Phase States in the Surface Layers of 100-m Differentially Quenched Rails
- Autores: Gromov V.1, Yur’ev A.2, Ivanov Y.3,4, Morozov K.2, Konovalov S.5, Peregudov O.6
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Afiliações:
- Siberian State Industrial University
- OAO EVRAZ Joint West Siberian Metallurgical Works
- Institute of High Current Electronics, Siberian Branch, Russian Academy of Sciences
- National Research Tomsk Polytechnic University
- Samara National Research University
- Omsk State Technical University
- Edição: Volume 2019, Nº 7 (2019)
- Páginas: 710-715
- Seção: Article
- URL: https://journals.rcsi.science/0036-0295/article/view/173355
- DOI: https://doi.org/10.1134/S003602951907005X
- ID: 173355
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Resumo
Abstract—The evolution of the structural-phase states in the surface layers of the head of differentially quenched DT350 rails to a depth of 10 mm are studied by optical microscopy and transmission electron diffraction microscopy along the central axis after the passage of a tonnage of 691.8 mln t gross in the experimental ring of AO VNIIZhT (proof ground for railway transport). The formation of a gradient structure is revealed. In this structure, the scalar and excess dislocation densities, the lattice curvature–torsion amplitude, and the degree of deformation-induced transformation of lamellar pearlite change gradually. The mechanisms of fracture of cementite lamellae are considered.
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Sobre autores
V. Gromov
Siberian State Industrial University
Autor responsável pela correspondência
Email: gromov@physics.sibsiu.ru
Rússia, Novokuznetsk
A. Yur’ev
OAO EVRAZ Joint West Siberian Metallurgical Works
Email: gromov@physics.sibsiu.ru
Rússia, Novokuznetsk
Yu. Ivanov
Institute of High Current Electronics, Siberian Branch, Russian Academy of Sciences; National Research Tomsk Polytechnic University
Email: gromov@physics.sibsiu.ru
Rússia, Tomsk; Tomsk
K. Morozov
OAO EVRAZ Joint West Siberian Metallurgical Works
Email: gromov@physics.sibsiu.ru
Rússia, Novokuznetsk
S. Konovalov
Samara National Research University
Email: gromov@physics.sibsiu.ru
Rússia, Samara
O. Peregudov
Omsk State Technical University
Email: gromov@physics.sibsiu.ru
Rússia, Omsk