BEHAVIOR OF CEMENTITE IN PERLITE STEEL UNDER DEFORMATION
https://doi.org/10.57070/2307-4497-2023-4(46)-9-20
Abstract
A brief overview of the latest experimental results of the study of cement as a structural component of perlite, obtained by transmission microscopy methods for various types of deformation is presented. The behavior of lamellar and granular cementite under types of active deformation (forging, stamping, drawing, rolling, long-term operation of rails) has been studied. Studies of granular perlite on samples of carbon eutectoid steel grade U8 containing 0.8% C, 0.18 % Mn, 0.22% Si, 0.17% Cr, 0.12%Ni, 0.10 % Cu are presented. The historical aspect of the origin of the name cementite from the history of the metallographic study of cementite as an independent phase is considered. An example of the practical application of pearlitic steel in the construction of the Akashi-Kaike bridge in Japan (the longest single-span suspension bridge based on huge pearlitic steel cables) is given Attention is paid to the analysis of transformation during various technological processes, its morphology and structural features, and the main mechanisms of destruction are analyzed. It was revealed that with a large missed tonnage, a critical density of defects accumulates in the surface layer, which inhibits the development of reversible elastic deformation and the involvement (development) of the mechanism of plastic distortion. It is suggested that an increase in the service life of rails can be achieved due to a longer preservation of a structure capable of developing reversible deformation processes that exclude the destruction of cementite plates in pearlite colonies with subsequent movement of carbon atoms to defects (dislocations) and the iron lattice region
Supporting agencies: The authors express their gratitude to Yu.F. Ivanov and N.A. Popova for stimulating discussions
About the Authors
Viktor Gromov
Siberian State Industrial University
Russian Federation
Russian Federation
Dr. Sci. (Phys.-Math.), Prof., Head of the Chair of Science named after V.M. Finkel
Mikhail Porfir’ev
Siberian State Industrial University
Russian Federation
Russian Federation
Candidate of the Department of Natural Sciences named after Prof. V.M. Finkel
Oleg Peregudov
Omsk State Technical University
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Vice-Rector for Youth Policy and Educational Activities
Anna Serebryakova
Siberian State Industrial University
Postgraduate student of the Department of Natural Sciences named after Professor V.M. Finkel
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For citations:
Gromov V., Porfir’ev M., Peregudov O., Serebryakova A. BEHAVIOR OF CEMENTITE IN PERLITE STEEL UNDER DEFORMATION. Bulletin of the Siberian State Industrial University. 2023;(4):9-20. (In Russ.) https://doi.org/10.57070/2307-4497-2023-4(46)-9-20
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