Influence of Welding Parameters and Filler Material on the Mechanical Properties of HSLA Steel S960MC Welded Joints

This article provides an overview of the influence of welding parameters and filler material on changes in the heat-affected zone (HAZ) of thermo-mechanically controlled processed (TMCP) steel welded joints. The research focused on evaluating the effect of heat input and cooling rate on the width of...

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Main Authors: Miloš Mičian, Martin Frátrik, Daniel Kajánek
Format: Article
Language:English
Published: MDPI AG 2021-02-01
Series:Metals
Subjects:
Online Access:https://www.mdpi.com/2075-4701/11/2/305
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author Miloš Mičian
Martin Frátrik
Daniel Kajánek
author_facet Miloš Mičian
Martin Frátrik
Daniel Kajánek
author_sort Miloš Mičian
collection DOAJ
description This article provides an overview of the influence of welding parameters and filler material on changes in the heat-affected zone (HAZ) of thermo-mechanically controlled processed (TMCP) steel welded joints. The research focused on evaluating the effect of heat input and cooling rate on the width of the soft zone, which significantly affects the mechanical properties of welded joints. The negative effect of the soft zone is more pronounced as the thickness of the material decreases. Therefore, the object of this research was a 3-mm-thick sheet of S960MC steel welded by gas metal arc welding (GMAW) and metal-cored arc welding (MCAW) technology. Variable welding parameters were reflected in different heat input and cooling rate values, which led to a change in the properties of the HAZ and thus the mechanical properties of the welded joints. The changes in the HAZ were analyzed by microscopic analysis and mechanical testing. The measured results showed a significant effect of heat input on the cooling rate, which considerably affected the width of the soft zone in the HAZ and thus the overall mechanical properties of the welded joints.
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spelling doaj.art-39a8500a8e084b649584f40511e495122023-12-03T13:06:10ZengMDPI AGMetals2075-47012021-02-0111230510.3390/met11020305Influence of Welding Parameters and Filler Material on the Mechanical Properties of HSLA Steel S960MC Welded JointsMiloš Mičian0Martin Frátrik1Daniel Kajánek2Faculty of Mechanical Engineering, University of Žilina, Univerzitná 8215/1, 010 26 Žilina, SlovakiaFaculty of Mechanical Engineering, University of Žilina, Univerzitná 8215/1, 010 26 Žilina, SlovakiaResearch Centre of the University of Žilina, University of Žilina, Univerzitná 8215/1, 010 26 Žilina, SlovakiaThis article provides an overview of the influence of welding parameters and filler material on changes in the heat-affected zone (HAZ) of thermo-mechanically controlled processed (TMCP) steel welded joints. The research focused on evaluating the effect of heat input and cooling rate on the width of the soft zone, which significantly affects the mechanical properties of welded joints. The negative effect of the soft zone is more pronounced as the thickness of the material decreases. Therefore, the object of this research was a 3-mm-thick sheet of S960MC steel welded by gas metal arc welding (GMAW) and metal-cored arc welding (MCAW) technology. Variable welding parameters were reflected in different heat input and cooling rate values, which led to a change in the properties of the HAZ and thus the mechanical properties of the welded joints. The changes in the HAZ were analyzed by microscopic analysis and mechanical testing. The measured results showed a significant effect of heat input on the cooling rate, which considerably affected the width of the soft zone in the HAZ and thus the overall mechanical properties of the welded joints.https://www.mdpi.com/2075-4701/11/2/305TMCP steelsS960MCsofteningsoft zone of HAZmetal-cored wire
spellingShingle Miloš Mičian
Martin Frátrik
Daniel Kajánek
Influence of Welding Parameters and Filler Material on the Mechanical Properties of HSLA Steel S960MC Welded Joints
Metals
TMCP steels
S960MC
softening
soft zone of HAZ
metal-cored wire
title Influence of Welding Parameters and Filler Material on the Mechanical Properties of HSLA Steel S960MC Welded Joints
title_full Influence of Welding Parameters and Filler Material on the Mechanical Properties of HSLA Steel S960MC Welded Joints
title_fullStr Influence of Welding Parameters and Filler Material on the Mechanical Properties of HSLA Steel S960MC Welded Joints
title_full_unstemmed Influence of Welding Parameters and Filler Material on the Mechanical Properties of HSLA Steel S960MC Welded Joints
title_short Influence of Welding Parameters and Filler Material on the Mechanical Properties of HSLA Steel S960MC Welded Joints
title_sort influence of welding parameters and filler material on the mechanical properties of hsla steel s960mc welded joints
topic TMCP steels
S960MC
softening
soft zone of HAZ
metal-cored wire
url https://www.mdpi.com/2075-4701/11/2/305
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AT martinfratrik influenceofweldingparametersandfillermaterialonthemechanicalpropertiesofhslasteels960mcweldedjoints
AT danielkajanek influenceofweldingparametersandfillermaterialonthemechanicalpropertiesofhslasteels960mcweldedjoints