Abstract
Differential quenching of rail by compressed air is a promising hardening method. Transmission electron microscopy is used for layer-by-layer analysis of differentially quenched rail. Quantitative parameters of the structure, phase composition, and dislocational substructure are determined and compared for different quenching conditions. Differential quenching of rail by compressed air in different conditions is accompanied by diffusional γ → α transformation. Three morphologically distinct components are formed: grains of plate pearlite, structure-free ferrite, and ferrite-carbide mixture. Gradient behavior is noted in the resulting structure: the state of the surface layer in the rail steel depends not only on the quenching conditions but also on the direction of observation and the depth of the layer being analyzed. Dislocational substructure is obtained; not only dislocational chaos, but also reticular, cellular, and fragmented dislocational substructure.
| Original language | English |
|---|---|
| Pages (from-to) | 883-885 |
| Number of pages | 3 |
| Journal | Steel in Translation |
| Volume | 44 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 1 Jan 2014 |
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Keywords
- dislocational substructure
- phase composition
- quenching
- steel rail
ASJC Scopus subject areas
- Materials Science(all)
Cite this
Structure, phase composition, and defect substructure of differentially quenched rail. / Gromov, V. E.; Yur’ev, A. B.; Morozov, K. V.; Ivanov, Yu F.; Alsaraeva, K. V.
In: Steel in Translation, Vol. 44, No. 12, 01.01.2014, p. 883-885.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Structure, phase composition, and defect substructure of differentially quenched rail
AU - Gromov, V. E.
AU - Yur’ev, A. B.
AU - Morozov, K. V.
AU - Ivanov, Yu F.
AU - Alsaraeva, K. V.
PY - 2014/1/1
Y1 - 2014/1/1
N2 - Differential quenching of rail by compressed air is a promising hardening method. Transmission electron microscopy is used for layer-by-layer analysis of differentially quenched rail. Quantitative parameters of the structure, phase composition, and dislocational substructure are determined and compared for different quenching conditions. Differential quenching of rail by compressed air in different conditions is accompanied by diffusional γ → α transformation. Three morphologically distinct components are formed: grains of plate pearlite, structure-free ferrite, and ferrite-carbide mixture. Gradient behavior is noted in the resulting structure: the state of the surface layer in the rail steel depends not only on the quenching conditions but also on the direction of observation and the depth of the layer being analyzed. Dislocational substructure is obtained; not only dislocational chaos, but also reticular, cellular, and fragmented dislocational substructure.
AB - Differential quenching of rail by compressed air is a promising hardening method. Transmission electron microscopy is used for layer-by-layer analysis of differentially quenched rail. Quantitative parameters of the structure, phase composition, and dislocational substructure are determined and compared for different quenching conditions. Differential quenching of rail by compressed air in different conditions is accompanied by diffusional γ → α transformation. Three morphologically distinct components are formed: grains of plate pearlite, structure-free ferrite, and ferrite-carbide mixture. Gradient behavior is noted in the resulting structure: the state of the surface layer in the rail steel depends not only on the quenching conditions but also on the direction of observation and the depth of the layer being analyzed. Dislocational substructure is obtained; not only dislocational chaos, but also reticular, cellular, and fragmented dislocational substructure.
KW - dislocational substructure
KW - phase composition
KW - quenching
KW - steel rail
UR - http://www.scopus.com/inward/record.url?scp=84925715223&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84925715223&partnerID=8YFLogxK
U2 - 10.3103/S0967091214120067
DO - 10.3103/S0967091214120067
M3 - Article
VL - 44
SP - 883
EP - 885
JO - Steel in Translation
JF - Steel in Translation
SN - 0967-0912
IS - 12
ER -