Thermomechanical treatment of S275JR steel: impact on microstructure, hardness, and impact toughness

Simple item page
dc.citation.epage449
dc.citation.rankM33
dc.citation.spage446
dc.contributor.authorStamenković, Uroš
dc.contributor.authorMarković, Ivana
dc.contributor.authorManasijević, Dragan
dc.contributor.authorNedeljković, Milan
dc.date.accessioned2025-11-25T10:02:01Z
dc.date.available2025-11-25T10:02:01Z
dc.date.issued2025
dc.description.abstractThis study investigates how different thermomechanical treatment procedures affect the hardness, microhardness, impact toughness, and microstructure of S275JR structural steel. For the experiment, an as-received rectangular bar of structural steel was normalized at 900 °C for 60 minutes. Following normalization, the samples were pre-strained (cold deformed) by 8% at room temperature using a rolling mill. After deformation, the samples were aged for 30 minutes at temperatures of 100 °C, 150 °C, 200 °C, and 250 °C. The hardness, microhardness, impact toughness, and microstructure were analyzed for both the as-received sample and treated samples. The results indicated that normalization improved both hardness and impact toughness due to grain refinement. The straining conducted after normalization led to an increase in hardness but a decrease in impact toughness as a result of work hardening. The subsequent aging further strengthened the material, likely due to the interaction between dislocations and secondary phase particles, such as Fe3C and other alloying elements.
dc.identifier.doi10.5937/IOC25446S
dc.identifier.isbn978-86-6305-164-5
dc.identifier.urihttps://ioc.tfbor.bg.ac.rs/public/2025/Proceedings_IOC_2025.pdf
dc.identifier.urihttps://repozitorijum.tfbor.bg.ac.rs/handle/123456789/6014
dc.language.isoen
dc.publisherUniversity of Belgrade - Technical Faculty in Bor
dc.rights.licenseCC-BY-NC-ND
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.sourceProceedings [Elektronski izvor] - 56th International October Conference on Mining and Metallurgy - IOC 2025, 22-25 October, 2025, Bor Lake, Serbia
dc.subjectS275JR steel
dc.subjectnormalization
dc.subjectstrain aging
dc.subjectimpact toughness
dc.subjecthardness
dc.titleThermomechanical treatment of S275JR steel: impact on microstructure, hardness, and impact toughness
dc.typeconferenceObject
dc.type.versionpublishedVersion

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Stamenkovic et al. - IOC 2025.pdf
Size:
2.62 MB
Format:
Adobe Portable Document Format
Download

Collections

NIR