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 |
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Keywords
- Keywords: differentially quenched rails
- long-term operation
- phase composition
- structure
ASJC Scopus subject areas
- Metals and Alloys
Cite this
Formation of Gradient Structure–Phase States in the Surface Layers of 100-m Differentially Quenched Rails. / Gromov, V. E.; Yur’ev, A. A.; Ivanov, Yu F.; Morozov, K. V.; Konovalov, S. V.; Peregudov, O. A.
In: Russian Metallurgy (Metally), Vol. 2019, No. 7, 01.07.2019, p. 710-715.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Formation of Gradient Structure–Phase States in the Surface Layers of 100-m Differentially Quenched Rails
AU - Gromov, V. E.
AU - Yur’ev, A. A.
AU - Ivanov, Yu F.
AU - Morozov, K. V.
AU - Konovalov, S. V.
AU - Peregudov, O. A.
PY - 2019/7/1
Y1 - 2019/7/1
N2 - 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.
AB - 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.
KW - Keywords: differentially quenched rails
KW - long-term operation
KW - phase composition
KW - structure
UR - http://www.scopus.com/inward/record.url?scp=85069912508&partnerID=8YFLogxK
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U2 - 10.1134/S003602951907005X
DO - 10.1134/S003602951907005X
M3 - Article
VL - 2019
SP - 710
EP - 715
JO - Russian Metallurgy (Metally)
JF - Russian Metallurgy (Metally)
SN - 0036-0295
IS - 7
ER -