Comparative Analysis of the Structure and Phase States and Defect Substructure of Bulk and Differentially Quenched Rails

K. V. Morozov, V. E. Gromov, Y. F. Ivanov, A. B. Yur’ev, K. V. Aksenova

Результат исследований: Материалы для журналаСтатья

1 цитирование (Scopus)

Выдержка

Optical and transmission electron microscopy (TEM) methods are used for layer by layer comparative analysis of low-temperature reliability rails with increased wear resistance and contact-fatigue strength of the highest quality after bulk quenching and differential hardening by different regimes. Quantitative relationships are established for changes in structural parameters, phase composition, and dislocation substructure over the central axis and fillet at different distances from the running surface. The degree of structure and phase composition inhomogeneity and defective substructure is revealed. It is shown that with respect to structural component content and interlamellar distance the structure after bulk hardening compared with differential hardening is more uniform in a layer 2 mm thick and less uniform at a distance of 10 mm from the running surface. With respect to stress concentration density, the rail structure after bulk hardening (compared with differential hardening) is less uniform in a layer 2 mm thick and more uniform in a layer at a distance of 10 mm from the running surface.

Язык оригиналаАнглийский
Страницы (с-по)1-6
Число страниц6
ЖурналMetallurgist
DOI
СостояниеПринято/в печати - 20 июл 2016

Отпечаток

rails
substructures
hardening
Hardening
Rails
Defects
defects
Phase composition
fillets
stress concentration
wear resistance
Wear resistance
Stress concentration
Quenching
inhomogeneity
quenching
Transmission electron microscopy
transmission electron microscopy
Temperature

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Metals and Alloys
  • Mechanics of Materials
  • Materials Chemistry

Цитировать

Comparative Analysis of the Structure and Phase States and Defect Substructure of Bulk and Differentially Quenched Rails. / Morozov, K. V.; Gromov, V. E.; Ivanov, Y. F.; Yur’ev, A. B.; Aksenova, K. V.

В: Metallurgist, 20.07.2016, стр. 1-6.

Результат исследований: Материалы для журналаСтатья

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abstract = "Optical and transmission electron microscopy (TEM) methods are used for layer by layer comparative analysis of low-temperature reliability rails with increased wear resistance and contact-fatigue strength of the highest quality after bulk quenching and differential hardening by different regimes. Quantitative relationships are established for changes in structural parameters, phase composition, and dislocation substructure over the central axis and fillet at different distances from the running surface. The degree of structure and phase composition inhomogeneity and defective substructure is revealed. It is shown that with respect to structural component content and interlamellar distance the structure after bulk hardening compared with differential hardening is more uniform in a layer 2 mm thick and less uniform at a distance of 10 mm from the running surface. With respect to stress concentration density, the rail structure after bulk hardening (compared with differential hardening) is less uniform in a layer 2 mm thick and more uniform in a layer at a distance of 10 mm from the running surface.",
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AU - Morozov, K. V.

AU - Gromov, V. E.

AU - Ivanov, Y. F.

AU - Yur’ev, A. B.

AU - Aksenova, K. V.

PY - 2016/7/20

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N2 - Optical and transmission electron microscopy (TEM) methods are used for layer by layer comparative analysis of low-temperature reliability rails with increased wear resistance and contact-fatigue strength of the highest quality after bulk quenching and differential hardening by different regimes. Quantitative relationships are established for changes in structural parameters, phase composition, and dislocation substructure over the central axis and fillet at different distances from the running surface. The degree of structure and phase composition inhomogeneity and defective substructure is revealed. It is shown that with respect to structural component content and interlamellar distance the structure after bulk hardening compared with differential hardening is more uniform in a layer 2 mm thick and less uniform at a distance of 10 mm from the running surface. With respect to stress concentration density, the rail structure after bulk hardening (compared with differential hardening) is less uniform in a layer 2 mm thick and more uniform in a layer at a distance of 10 mm from the running surface.

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