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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Bibliographic Details
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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Summary:—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.
ISSN:0036-0295
1555-6255
1531-8648
DOI:10.1134/S0036029522100354