Dislocation substructures and internal stress fields in bulk- and differentially quenched rails

V. E. Gromov, K. V. Volkov, A. M. Glezer, Yu F. Ivanov, K. V. Morozov, K. V. Alsaraeva, S. V. Konovalov

Research Center for Physical Materials Science and Composite Materials

Research output: Contribution to journal › Article › peer-review

Abstract

A layer-by-layer analysis of rails bulk-hardened in oil and differentially hardened in a variety of regimes is performed by means of transmission electron microscopy. Quantitative parameters of dislocation substructures and internal stress fields, and their dependences on the distance from the tread contact surface are established. It is shown that the most dangerous stress concentrators are interfaces between globular cementite matrix particles; such interfaces form predominantly in rails subjected to bulk quenching.

Original language	English
Pages (from-to)	981-987
Number of pages	7
Journal	Bulletin of the Russian Academy of Sciences: Physics
Volume	78
Issue number	10
DOIs	https://doi.org/10.3103/S1062873814100086
Publication status	Published - 21 Oct 2014

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.3103/S1062873814100086

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Dislocation substructures and internal stress fields in bulk- and differentially quenched rails. / Gromov, V. E.; Volkov, K. V.; Glezer, A. M.; Ivanov, Yu F.; Morozov, K. V.; Alsaraeva, K. V.; Konovalov, S. V.

In: Bulletin of the Russian Academy of Sciences: Physics, Vol. 78, No. 10, 21.10.2014, p. 981-987.

Research output: Contribution to journal › Article › peer-review

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AU - Gromov, V. E.

AU - Volkov, K. V.

AU - Glezer, A. M.

AU - Ivanov, Yu F.

AU - Morozov, K. V.

AU - Alsaraeva, K. V.

AU - Konovalov, S. V.

PY - 2014/10/21

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N2 - A layer-by-layer analysis of rails bulk-hardened in oil and differentially hardened in a variety of regimes is performed by means of transmission electron microscopy. Quantitative parameters of dislocation substructures and internal stress fields, and their dependences on the distance from the tread contact surface are established. It is shown that the most dangerous stress concentrators are interfaces between globular cementite matrix particles; such interfaces form predominantly in rails subjected to bulk quenching.

AB - A layer-by-layer analysis of rails bulk-hardened in oil and differentially hardened in a variety of regimes is performed by means of transmission electron microscopy. Quantitative parameters of dislocation substructures and internal stress fields, and their dependences on the distance from the tread contact surface are established. It is shown that the most dangerous stress concentrators are interfaces between globular cementite matrix particles; such interfaces form predominantly in rails subjected to bulk quenching.

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Dislocation substructures and internal stress fields in bulk- and differentially quenched rails

Abstract

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