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Scientific paper - Original scientific paper
Detection and analysis of non-conformities in S355JR non-alloy structural steel
In: Proceedings of 13th International Conference Mechanical Technologies and Structural Materials 2024. / Čatipović, Nikša; Krolo, Jure; Gjeldum, Nikola (Ed.). Split: HRVATSKO DRUŠTVO ZA STROJARSKE TEHNOLOGIJE, 2024. pp. 205-217. urn:nbn:hr:115:696477
Kozina, Franjo; Zovko Brodarac, Zdenka; Voloder, Luka; Grgić, Ivan

Institutional repository: Repository of Faculty of Metallurgy University of Zagreb

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Kozina, F., Zovko Brodarac, Z., Voloder, L. & Grgić, I. (2024). Detection and analysis of non-conformities in S355JR non-alloy structural steel. In N. Čatipović, (Ed.), J. Krolo, (Ed.), N. Gjeldum, (Ed.), Proceedings of 13th International Conference Mechanical Technologies and Structural Materials 2024 (pp. 205-217). Split: HRVATSKO DRUŠTVO ZA STROJARSKE TEHNOLOGIJE. Retrieved from https://urn.nsk.hr/urn:nbn:hr:115:696477

Kozina, Franjo, et al. "Detection and analysis of non-conformities in S355JR non-alloy structural steel." Proceedings of 13th International Conference Mechanical Technologies and Structural Materials 2024, edited by Nikša Čatipović, edited by Jure Krolo, edited by Nikola Gjeldum, HRVATSKO DRUŠTVO ZA STROJARSKE TEHNOLOGIJE, 2024, pp. 205-217. https://urn.nsk.hr/urn:nbn:hr:115:696477

Kozina, Franjo, Zdenka Zovko Brodarac, Luka Voloder and Ivan Grgić. "Detection and analysis of non-conformities in S355JR non-alloy structural steel." In Proceedings of 13th International Conference Mechanical Technologies and Structural Materials 2024, 205-217. Split: HRVATSKO DRUŠTVO ZA STROJARSKE TEHNOLOGIJE, 2024. Accessed 2024 December 26. https://urn.nsk.hr/urn:nbn:hr:115:696477

Kozina, F., et al. (2024) 'Detection and analysis of non-conformities in S355JR non-alloy structural steel', in Čatipović, N. (ed.), Krolo, J. (ed.), Gjeldum, N. (ed.), Proceedings of 13th International Conference Mechanical Technologies and Structural Materials 2024, HRVATSKO DRUŠTVO ZA STROJARSKE TEHNOLOGIJE, Split, pp. 205-217. Available at: https://urn.nsk.hr/urn:nbn:hr:115:696477 (Accessed 26 December 2024)

Kozina F, Zovko Brodarac Z, Voloder L, Grgić I. Detection and analysis of non-conformities in S355JR non-alloy structural steel. In: N. Čatipović, ed., J. Krolo, ed., N. Gjeldum, ed. Proceedings of 13th International Conference Mechanical Technologies and Structural Materials 2024. Split: HRVATSKO DRUŠTVO ZA STROJARSKE TEHNOLOGIJE; 2024. Pp. 205-217. [cited 2024 December 26] Available at: https://urn.nsk.hr/urn:nbn:hr:115:696477

F. Kozina, Z. Zovko Brodarac, L. Voloder and I. Grgić, "Detection and analysis of non-conformities in S355JR non-alloy structural steel", Proceedings of 13th International Conference Mechanical Technologies and Structural Materials 2024, N. Čatipović, J. Krolo and N. Gjeldum, Eds. Split: HRVATSKO DRUŠTVO ZA STROJARSKE TEHNOLOGIJE, 2024. [Online] Available at: https://urn.nsk.hr/urn:nbn:hr:115:696477 [Accessed: 26 December 2024]

Metadata
Title (english)Detection and analysis of non-conformities in S355JR non-alloy structural steel
AuthorFranjo Kozina
AuthorZdenka Zovko Brodarac
AuthorLuka Voloder
AuthorIvan Grgić
EditorNikša Čatipović
EditorJure Krolo
EditorNikola Gjeldum
Author's institutionUniversity of Zagreb
Faculty of Metallurgy
(Department of Process Metallurgy)
(Laboratory of Iron, Steel and Founding)
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Metallurgy
Process Metallurgy
Abstract (english)
Although construction materials are considered the most predictable components of a construction project, design and material challenges represent a major cause of productivity loss. The occurrence of non-conformities is a consequence of the very difficult quality assurance under industrial conditions, especially in the context of material processing. In this paper, non-conformities detected during the ultrasonic testing of the steel infrastructure were analysed. The investigation of non-conformity area included the chemical composition analysis, the thermodynamic calculations of the solidification sequence and metallographic analysis. The ultrasonic test results indicated the crocodile effect associated with the thermomechanical processing of steel ingots containing casting defects. This fact was supported by the results of the non-equilibrium solidification sequence. Microstructural analysis of the non-conformity area indicated the presence of non-metallic inclusions and cracks. The crack nucleation and propagation occurred during the thermo-mechanical processing. The microstructure constituents also indicated improperly performed thermo-mechanical processing. The rolling texture and acicular ferrite pointed to improperly performed normalization. The conducted research indicates the need to impose additional requirements on the microstructure of the final product, although it is not required by the EN 10025-2:2019 standard.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Publication titleProceedings of 13th International Conference Mechanical Technologies and Structural Materials 2024
Editionprvo izdanje
Numberingpp. 205-217
p-ISSN1847-7917
URN:NBNurn:nbn:hr:115:696477
Publication2024-10-19
ConferenceTitle: 13th International Conference Mechanical Technologies and Structural Materials 2024
Acronym: MTSM 2024
Location: Split, Croatia
Organizer: Fakultet elektrotehnike, strojarstva i brodogradnje Sveučilišta u Splitu
Start date: 2024-10-19
End date: 2024-10-20
Assembly type: Lecture
Type of resourceText
PublisherHRVATSKO DRUŠTVO ZA STROJARSKE TEHNOLOGIJE
Publishing placeSplit
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2024-10-16 06:50:50