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...
Main Authors: | , , , |
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Format: | Article |
Language: | English |
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Saint Petersburg State University of Architecture and Civil Engineering
2021-06-01
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Series: | Architecture and Engineering |
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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. |
first_indexed | 2024-12-14T19:05:24Z |
format | Article |
id | doaj.art-8489e53cc7e94d769f57ea05beb13b52 |
institution | Directory Open Access Journal |
issn | 2500-0055 2500-0055 |
language | English |
last_indexed | 2024-12-14T19:05:24Z |
publishDate | 2021-06-01 |
publisher | Saint Petersburg State University of Architecture and Civil Engineering |
record_format | Article |
series | Architecture and Engineering |
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 |