Effect of thermal deformation and Nb element action on the organization and performance of steel

The influences of Nb element and hot deformation on the strength of steels were systematically investigated. The microstructures and mechanical properties of the steels are determined through optical microscopy (OM), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and tens...

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Main Authors: Longhai Chen, Changrong Li, Jiajia Wei
Format: Article
Language:English
Published: IOP Publishing 2022-01-01
Series:Materials Research Express
Subjects:
Online Access:https://doi.org/10.1088/2053-1591/ac703b
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author Longhai Chen
Changrong Li
Jiajia Wei
author_facet Longhai Chen
Changrong Li
Jiajia Wei
author_sort Longhai Chen
collection DOAJ
description The influences of Nb element and hot deformation on the strength of steels were systematically investigated. The microstructures and mechanical properties of the steels are determined through optical microscopy (OM), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and tensile tests. The nanometer sized carbide particles precipitated in the grain boundary are attributed mainly to severe deformation at high temperature. Of the two steels with different content of Nb element and deformation, the strength of 2 ^# steel is more lager due to more content of Nb can form more precipitates to limit grains growth. Furthermore, the results also shown that adding Nb can refine the microstructure of the steel and effectively improve the mechanical properties, but only thermal deformation has no obvious effect on the improvement of the properties of the steel.
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spelling doaj.art-1e343edbc95b4405a9b5119a3666cae02023-08-09T16:11:28ZengIOP PublishingMaterials Research Express2053-15912022-01-019505651810.1088/2053-1591/ac703bEffect of thermal deformation and Nb element action on the organization and performance of steelLonghai Chen0https://orcid.org/0000-0002-5394-0587Changrong Li1Jiajia Wei2College of Material and Metallurgy, Guizhou University , Guiyang 550025, People’s Republic of ChinaCollege of Material and Metallurgy, Guizhou University , Guiyang 550025, People’s Republic of China; Guizhou Province Key Laboratory for Metallurgical Engineering and Process Energy Saving, Guiyang 550025, People’s Republic of ChinaCollege of Material and Metallurgy, Guizhou University , Guiyang 550025, People’s Republic of ChinaThe influences of Nb element and hot deformation on the strength of steels were systematically investigated. The microstructures and mechanical properties of the steels are determined through optical microscopy (OM), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and tensile tests. The nanometer sized carbide particles precipitated in the grain boundary are attributed mainly to severe deformation at high temperature. Of the two steels with different content of Nb element and deformation, the strength of 2 ^# steel is more lager due to more content of Nb can form more precipitates to limit grains growth. Furthermore, the results also shown that adding Nb can refine the microstructure of the steel and effectively improve the mechanical properties, but only thermal deformation has no obvious effect on the improvement of the properties of the steel.https://doi.org/10.1088/2053-1591/ac703bhot deformationmechanical propertiescarbide particles precipitatedNb element
spellingShingle Longhai Chen
Changrong Li
Jiajia Wei
Effect of thermal deformation and Nb element action on the organization and performance of steel
Materials Research Express
hot deformation
mechanical properties
carbide particles precipitated
Nb element
title Effect of thermal deformation and Nb element action on the organization and performance of steel
title_full Effect of thermal deformation and Nb element action on the organization and performance of steel
title_fullStr Effect of thermal deformation and Nb element action on the organization and performance of steel
title_full_unstemmed Effect of thermal deformation and Nb element action on the organization and performance of steel
title_short Effect of thermal deformation and Nb element action on the organization and performance of steel
title_sort effect of thermal deformation and nb element action on the organization and performance of steel
topic hot deformation
mechanical properties
carbide particles precipitated
Nb element
url https://doi.org/10.1088/2053-1591/ac703b
work_keys_str_mv AT longhaichen effectofthermaldeformationandnbelementactionontheorganizationandperformanceofsteel
AT changrongli effectofthermaldeformationandnbelementactionontheorganizationandperformanceofsteel
AT jiajiawei effectofthermaldeformationandnbelementactionontheorganizationandperformanceofsteel