Abstract
By methods of optical and transmission electron diffraction microscopy the evolution in structural phase states of surface layers head of differentially hardened rails of DT 350 category to the depth up to 10 mm along the central axis after the passed tonnage of 691.8 mln. t brutto was studied. The formation of gradient substructure being expressed in regular change in scalar and excess density of dislocations, curvature-torsion amplitude of steel crystal lattice, degree of deformation transformation of lamellar pearlite structure was defected. The failure mechanisms of cementite plates were considered.
| Original language | English |
|---|---|
| Pages (from-to) | 224-227 |
| Number of pages | 4 |
| Journal | Materials Letters |
| Volume | 209 |
| DOIs | |
| Publication status | Published - 15 Dec 2017 |
Keywords
- Differentially hardened rails
- Dislocation density
- Long-term operation
- Substructure
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
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Gromov, V. E., Yuriev, A. A., Ivanov, Y. F., Glezer, A. M., Konovalov, S. V., Semin, A. P., & Sundeev, R. V. (2017). Defect substructure change in 100-m differentially hardened rails in long-term operation. Materials Letters, 209, 224-227. https://doi.org/10.1016/j.matlet.2017.07.135