2019
DOI: 10.1088/1757-899x/560/1/012190
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Investigation of macro and micro structures of compounds of high-strength rails implemented by contact butt welding using burning-off

Abstract: Investigations of the structural components of rail joints, obtained by contact butt welding using burning-off, which are revealed on the surface of kinks after the destruction of the compounds during static bending tests and after destruction in operating conditions, were carried out. Analysis of the microstructure and chemical heterogeneity of the fracture surface was carried out with the help of a scanning electron microscope JEOL JIB-Z4500, equipped with an attachment for energy-dispersive analysis. The an… Show more

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Cited by 18 publications
(15 citation statements)
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“…The presented formulas allow forecasting the risk values of any complexity degree to calculate the impact characteristics and the future management decisions options to reduce the extent of risk influence on enterprise activity, and to reduce the probability or prevent further risks (Balanovskiy et al, 2019;Shtayger et al, 2019).…”
Section: Methodsmentioning
confidence: 99%
“…The presented formulas allow forecasting the risk values of any complexity degree to calculate the impact characteristics and the future management decisions options to reduce the extent of risk influence on enterprise activity, and to reduce the probability or prevent further risks (Balanovskiy et al, 2019;Shtayger et al, 2019).…”
Section: Methodsmentioning
confidence: 99%
“…В то же время кольцевые швы имеют зоны материала с различными свойствами, такие как основной металл (base metal, BM), материал шва (weld material, WM), материал корневого шва (root-welding material, RM) и зона термического влияния (heat affected zone, HAZ). Неоднородность сварных соединений по геометрии и свойствам материалов приводит к значительной концентрации напряжений и деформаций в дефектных частях, что значительно снижает деформационную несущую способность сварных соединений трубопроводов [13,14].…”
Section: а н н о та ц и яunclassified
“…В процессе сварочного нагрева свариваемого метала, плавления присадочной проволоки формируется сварной шов с литой структурой, который имеет зону перехода к структуре основного металла (HAZ), именно в этой зоне происходит снижение значений ударной вязкости [14][15][16][17][18][19][20].…”
Section: а н н о та ц и яunclassified
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