Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 710-715 |
| Number of pages | 6 |
| Journal | Russian Metallurgy (Metally) |
| Volume | 2019 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 1 Jul 2019 |
Keywords
- Keywords: differentially quenched rails
- long-term operation
- phase composition
- structure
ASJC Scopus subject areas
- Metals and Alloys
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Gromov, V. E., Yur’ev, A. A., Ivanov, Y. F., Morozov, K. V., Konovalov, S. V., & Peregudov, O. A. (2019). Formation of Gradient Structure–Phase States in the Surface Layers of 100-m Differentially Quenched Rails. Russian Metallurgy (Metally), 2019(7), 710-715. https://doi.org/10.1134/S003602951907005X