Effect of form of graphite inclusions in cast irons on distortions of crystal lattice and crack resistance at modeling of operational loads of working elements of mining machines functioning in natural low temperature conditions
Vladimir Petrovich Gulyaev,
Maksim Mikhailovich Sibiryakov,
Petr Petrovich Petrov,
Ksenia Valer’evna Stepanova https://doi.org/10.31242/2618-9712-2018-24-2-58-66
Abstract
A high-quality relation of structural components of cast irons with a ferrite-pearlitic metal base and crack resistance of laboratory specimens subjected to impact cyclic loading modeling operational loads of working elements of mining machines is investigated. Determination of a value of plastic strains developing at destruction of the laboratory specimens with a previously grown fatigue crack was made by a X-ray diffractometry method of certain areas of a frontal plane of the specimens according to a particular scheme with known distances of a center of a shooting field from an initiating notch base. It is possible to select the deformed areas of construction elements and determine a relative level of distortions of crystals according to characteristics of diffraction profiles of heterophase alloys (constructional materials like the cast irons and steels). It is established that the main characteristics of the diffraction profiles indicate a course of microstrain processes of a metal base complex with the different components of a microstructure of the heterophase alloys.
Keywords
alloys,
graphite inclusions,
ferrite,
pearlite,
diffraction profiles,
intensity of reflection,
crack resistance.
Supporting agencies: The authors express their deep gratitude to prof. N.S. Kogut for his help at the mecanic tests cycle implementation and valuable remarks and proposals regarding the article
About the Authors
Vladimir Petrovich Gulyaev
Yakut State Agricultural Academy
Russian Federation
Russian Federation
GULYAEV Vladimir Petrovich, Doctor of Technical Sciences, Professor, Yakut State Agricultural Academy, 15 Krasil’nikov St., Yakutsk, 677007, Russia, http://orcid.org/0000-0001-8650-0855, uekztddg@mail.ru;
Maksim Mikhailovich Sibiryakov
M.K. Ammosov North-Eastern Federal University
Russian Federation
Russian Federation
SIBIRYAKOV Maksim Mikhailovich, Chief Engineer, M.K. Ammosov North-Eastern Federal University, 58 Belinsky St., Yakutsk, 677000, Russia, mm.sibiriakov@s-vfu.ru;
Petr Petrovich Petrov
V.P. Larionov Institute of Physical-Technical Problems of the North SB RAS
Russian Federation
Russian Federation
PETROV Petr Petrovich, Candidate of Physical and Mathematical Sciences, Leading Researcher, V.P. Larionov Institute of Physical-Technical Problems of the North SB RAS, 1 Oktyabrskaya St., Yakutsk, 677890, Russia, http://orcid.org/0000-0001-6019-3631, ppp32@mail.ru;
Ksenia Valer’evna Stepanova
V.P. Larionov Institute of Physical-Technical Problems of the North SB RAS
Russian Federation
Russian Federation
STEPANOVA Ksenia Valer’evna, Research Scientist, V.P. Larionov Institute of Physical-Technical Problems of the North SB RAS, 1 Oktyabrskaya St., Yakutsk, 677890, Russia, http://orcid.org/0000-0002-7418-4485, kseniastepanova@rambler.ru.
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For citations:
Gulyaev V.P., Sibiryakov M.M., Petrov P.P., Stepanova K.V. Effect of form of graphite inclusions in cast irons on distortions of crystal lattice and crack resistance at modeling of operational loads of working elements of mining machines functioning in natural low temperature conditions. Arctic and Subarctic Natural Resources. 2018;23(2):58-66. (In Russ.) https://doi.org/10.31242/2618-9712-2018-24-2-58-66
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