Evolution of the Structure of Rail Steel during Compression

—The evolution of the structure and defect substructure of rail steel during uniaxial compression to a reduction of 50% is studied. The strain hardening is found to have a multistage character and to be accompanied by fragmentation of pearlite grains, which increases with the strain. An increase in...

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Published in:Russian metallurgy Metally 2022-10, Vol.2022 (10), p.1192-1197
Main Authors: Ivanov, Yu. F., Gromov, V. E., Aksenova, K. V., Kuznetsov, R. V., Kormyshev, V. E., Vashchuk, E. S.
Format: Article
Language:English
Subjects:
Cementite
Chemistry and Materials Science
Dislocation density
Dislocation mobility
Evolution
Materials Science
Metallic Materials
Pearlite
Rail steels
Strain hardening
Structure and Properties of the Deformed State
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creator Ivanov, Yu. F.
Gromov, V. E.
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description —The evolution of the structure and defect substructure of rail steel during uniaxial compression to a reduction of 50% is studied. The strain hardening is found to have a multistage character and to be accompanied by fragmentation of pearlite grains, which increases with the strain. An increase in the strain is accompanied by a decrease in the scalar and excess dislocation densities. Cementite plates are found to undergo destruction via their dissolution and cutting by mobile dislocations.
doi_str_mv 10.1134/S0036029522100354
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subjects Cementite
Chemistry and Materials Science
Dislocation density
Dislocation mobility
Evolution
Materials Science
Metallic Materials
Pearlite
Rail steels
Strain hardening
Structure and Properties of the Deformed State
title Evolution of the Structure of Rail Steel during Compression
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