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Metal Science and Metallography
Название Determination of rail steel structural elements via the method of atomic force microscopy
DOI 10.17580/cisisr.2022.01.16
Автор A. E. Balanovskiy, M. G. Shtaiger, V. V. Kondratyev, A. I. Karlina
Информация об авторе

Irkutsk National Research Technical University (Irkutsk, Russia):

A. E. Balanovskiy, Cand. Eng., Associate Prof.


Mechel Steel Management Company (Moscow, Russia):
M. G. Shtaiger, Cand. Eng., Chief operating Officer


A. P. Vinogradov Institute of Geochemistry of the Siberian Branch of the Russian Academy of Sciences (Irkutsk, Russia):
V. V. Kondratyev, Cand. Eng., Senior Scientific Researcher


Moscow State University of Civil Engineering (Moscow, Russia):
A. I. Karlina, Cand. Eng., Scientific Researcher, e-mail: karlinat@mail.ru


The distance between pearlite plates is an important parameter for control of ductility and deformation strengthening of carbon steels. Most methods of optical end electronic microscopy for measuring the distances between cementite and pearlite plates in pearlite steels make definite complications when applying to high-dispersed microstructures. At present time rail steels with pearlite structure are fabricated with interlamellar distance 60-130 nm. This research used atomic force microscopy (AFM) for measuring interlamellar distances of pearlite structure in the heat-affected zone (HAZ) of rail welded joint. Qualitative evaluation of cementite and ferrite plates thickness was obtained for the first time, depending on location relating to a rail weld fusion line. The input of cementite plates in strength on the base of Hall-Petch equation was considered. Influence of the relationship between the size of pearlite colonies dp and thickness of cementite plates tc on metal destruction stress of a HAZ welded joint was assessed.

Ключевые слова Structure, pearlite, ferrite, cementite, plate thickness, interlamellar distance, atomic force microscopy, rail steel, welded joint, heat affected zone
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Полный текст статьи Determination of rail steel structural elements via the method of atomic force microscopy