Abstract
The microstructure evolution and properties variation of the surface layer of rail steel after passed 500 and 1000 million tons of gross weight (MTGW) have been investigated. The wear rate increases to 3 and 3.4 times after passed 500 and 1000 MTGW, respectively. The corresponding friction coefficient decreases by 1.4 and 1.1 times. The cementite plates were destroyed and formed the cementite particles of around 10–50nm in size after passed 500 MTGW. The early stage dynamical recrystallisation was observed after passed 1000 MTGW. The mechanisms for these have been suggested. The large number of bend extinction contours is revealed in the surface layer. The internal stress field is evaluated.
| Original language | English |
|---|---|
| Pages (from-to) | 1-6 |
| Number of pages | 6 |
| Journal | Materials Science and Technology (United Kingdom) |
| Volume | 33 |
| Issue number | 12 |
| DOIs | |
| Publication status | Accepted/In press - 11 Feb 2017 |
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Keywords
- defect substructure
- internal stress
- microstructure
- Rail steel
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
Cite this
Degradation of structure and properties of rail surface layer at long-term operation. / Gromov, V. E.; Ivanov, Yury Fedorovich; Qin, R. S.; Peregudov, O. A.; Aksenova, K. V.; Semina, O. A.
In: Materials Science and Technology (United Kingdom), Vol. 33, No. 12, 11.02.2017, p. 1-6.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Degradation of structure and properties of rail surface layer at long-term operation
AU - Gromov, V. E.
AU - Ivanov, Yury Fedorovich
AU - Qin, R. S.
AU - Peregudov, O. A.
AU - Aksenova, K. V.
AU - Semina, O. A.
PY - 2017/2/11
Y1 - 2017/2/11
N2 - The microstructure evolution and properties variation of the surface layer of rail steel after passed 500 and 1000 million tons of gross weight (MTGW) have been investigated. The wear rate increases to 3 and 3.4 times after passed 500 and 1000 MTGW, respectively. The corresponding friction coefficient decreases by 1.4 and 1.1 times. The cementite plates were destroyed and formed the cementite particles of around 10–50nm in size after passed 500 MTGW. The early stage dynamical recrystallisation was observed after passed 1000 MTGW. The mechanisms for these have been suggested. The large number of bend extinction contours is revealed in the surface layer. The internal stress field is evaluated.
AB - The microstructure evolution and properties variation of the surface layer of rail steel after passed 500 and 1000 million tons of gross weight (MTGW) have been investigated. The wear rate increases to 3 and 3.4 times after passed 500 and 1000 MTGW, respectively. The corresponding friction coefficient decreases by 1.4 and 1.1 times. The cementite plates were destroyed and formed the cementite particles of around 10–50nm in size after passed 500 MTGW. The early stage dynamical recrystallisation was observed after passed 1000 MTGW. The mechanisms for these have been suggested. The large number of bend extinction contours is revealed in the surface layer. The internal stress field is evaluated.
KW - defect substructure
KW - internal stress
KW - microstructure
KW - Rail steel
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UR - http://www.scopus.com/inward/citedby.url?scp=85012914798&partnerID=8YFLogxK
U2 - 10.1080/02670836.2017.1287983
DO - 10.1080/02670836.2017.1287983
M3 - Article
VL - 33
SP - 1
EP - 6
JO - Materials Science and Technology
JF - Materials Science and Technology
SN - 0267-0836
IS - 12
ER -