STRUCTURAL CHANGES IN STRUCTURAL STEELS DURING THERMAL CYCLING

Introduction: During experimental studies of structural steels responsible for the reliability of metal structures used, for example, in hoisting and transporting machinery, we established a correlation between the magnetic parameter Hp and characteristic changes in the metal microstructure during t...

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Main Authors: Valeriy Gordienko, Sergey Repin, Alexander Vorobiev, Angelica Abrosimova
Format: Article
Language:English
Published: Saint Petersburg State University of Architecture and Civil Engineering 2021-06-01
Series:Architecture and Engineering
Subjects:
Online Access:https://aej.spbgasu.ru/index.php/AE/article/view/395/200
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author Valeriy Gordienko
Sergey Repin
Alexander Vorobiev
Angelica Abrosimova
author_facet Valeriy Gordienko
Sergey Repin
Alexander Vorobiev
Angelica Abrosimova
author_sort Valeriy Gordienko
collection DOAJ
description Introduction: During experimental studies of structural steels responsible for the reliability of metal structures used, for example, in hoisting and transporting machinery, we established a correlation between the magnetic parameter Hp and characteristic changes in the metal microstructure during thermal cycling. It is shown that the Нр parameter depends on the initial structural state of steel, the amount and mass fraction of alloying elements, and the number of heating/cooling cycles. Methods: We found that an increase in the number of heating/cooling cycles and the amount of alloying elements, as well as preliminary cold plastic deformation with stage-by-stage control of structural changes using passive magnetic flux leakage testing results in a finer-grained structure, which was confirmed by metallographic analysis. Results: The paper considers specifics of structural changes in steels with different initial structures during thermal cycling. It is shown that the final grain size depends on the number of treatment cycles, the amount of alloying elements, and the initial microstructure. It is the fine-grain structure that improves the most important performance characteristics of steels: strength, cyclic strength, and cold brittleness.
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spelling doaj.art-8489e53cc7e94d769f57ea05beb13b522022-12-21T22:50:52ZengSaint Petersburg State University of Architecture and Civil EngineeringArchitecture and Engineering2500-00552500-00552021-06-0162707610.23968/2500-0055-2021-6-2-70-76STRUCTURAL CHANGES IN STRUCTURAL STEELS DURING THERMAL CYCLINGValeriy Gordienko0Sergey Repin1Alexander Vorobiev2Angelica Abrosimova3Saint Petersburg State University of Architecture and Civil EngineeringSaint Petersburg State University of Architecture and Civil EngineeringEmperor Alexander I St. Petersburg State Transport UniversitySaint Petersburg State University of Architecture and Civil EngineeringIntroduction: During experimental studies of structural steels responsible for the reliability of metal structures used, for example, in hoisting and transporting machinery, we established a correlation between the magnetic parameter Hp and characteristic changes in the metal microstructure during thermal cycling. It is shown that the Нр parameter depends on the initial structural state of steel, the amount and mass fraction of alloying elements, and the number of heating/cooling cycles. Methods: We found that an increase in the number of heating/cooling cycles and the amount of alloying elements, as well as preliminary cold plastic deformation with stage-by-stage control of structural changes using passive magnetic flux leakage testing results in a finer-grained structure, which was confirmed by metallographic analysis. Results: The paper considers specifics of structural changes in steels with different initial structures during thermal cycling. It is shown that the final grain size depends on the number of treatment cycles, the amount of alloying elements, and the initial microstructure. It is the fine-grain structure that improves the most important performance characteristics of steels: strength, cyclic strength, and cold brittleness.https://aej.spbgasu.ru/index.php/AE/article/view/395/200welded metal structuresstructural steelstransport and special purpose vehicleshandling machinerythermal cyclingstructural changesfine-grain structuremetallographic analysispassive magnetic flux leakage testingmagnetic parameter нр.
spellingShingle Valeriy Gordienko
Sergey Repin
Alexander Vorobiev
Angelica Abrosimova
STRUCTURAL CHANGES IN STRUCTURAL STEELS DURING THERMAL CYCLING
Architecture and Engineering
welded metal structures
structural steels
transport and special purpose vehicles
handling machinery
thermal cycling
structural changes
fine-grain structure
metallographic analysis
passive magnetic flux leakage testing
magnetic parameter нр.
title STRUCTURAL CHANGES IN STRUCTURAL STEELS DURING THERMAL CYCLING
title_full STRUCTURAL CHANGES IN STRUCTURAL STEELS DURING THERMAL CYCLING
title_fullStr STRUCTURAL CHANGES IN STRUCTURAL STEELS DURING THERMAL CYCLING
title_full_unstemmed STRUCTURAL CHANGES IN STRUCTURAL STEELS DURING THERMAL CYCLING
title_short STRUCTURAL CHANGES IN STRUCTURAL STEELS DURING THERMAL CYCLING
title_sort structural changes in structural steels during thermal cycling
topic welded metal structures
structural steels
transport and special purpose vehicles
handling machinery
thermal cycling
structural changes
fine-grain structure
metallographic analysis
passive magnetic flux leakage testing
magnetic parameter нр.
url https://aej.spbgasu.ru/index.php/AE/article/view/395/200
work_keys_str_mv AT valeriygordienko structuralchangesinstructuralsteelsduringthermalcycling
AT sergeyrepin structuralchangesinstructuralsteelsduringthermalcycling
AT alexandervorobiev structuralchangesinstructuralsteelsduringthermalcycling
AT angelicaabrosimova structuralchangesinstructuralsteelsduringthermalcycling