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2. A review on sulphur thermodynamics in liquid ironAnže Bajželj, Tilen Balaško, Jaka Burja, 2026, pregledni znanstveni članek Ključne besede: steelmaking, thermodynamics, sulphur, sulphides, desulphurisation, non-metallic inclusions
Objavljeno v DiRROS: 28.01.2026; Ogledov: 281; Prenosov: 213
 Celotno besedilo (2,19 MB)
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4. Influence of remelting on ▫$AlSi_9Cu_3(Fe)$▫ alloy propertiesZdenka Zovko Brodarac, Franjo Kozina, Davor Stanić, Martin Folta, Jože Medved, Jaka Burja, 2025, izvirni znanstveni članek Ključne besede: recycling potential, quality, AlSi9Cu3(Fe) alloy, solidification, thermodynamics, microstructure
Objavljeno v DiRROS: 24.12.2025; Ogledov: 512; Prenosov: 234
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6. Temperature-dependent effectiveness of Ti, Nb, Zr, and Y in controlling grain growth of AISI 304 austenitic stainless steelJaka Burja, Samo Tome, Aleš Nagode, 2025, izvirni znanstveni članek Ključne besede: microalloying, grain growth, annealing, austenite
Objavljeno v DiRROS: 30.10.2025; Ogledov: 489; Prenosov: 275
Celotno besedilo (13,17 MB)
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7. Effect of hardening on the magnetic behavior of AISI 1045 steelMario Vukotić, Damijan Miljavec, Jaka Burja, 2025, izvirni znanstveni članek Povzetek: Hardening is an effective method to improve the hardness of the steel construction elements of an electric machine, such as rotor shaft. Surface hardening is typically employed for shafts as it provides a material with hard wear-resistant surface (martensite) and tough and ductile core (ferrite and pearlite), with the transitional zone between them (martensite, ferrite, and pearlite). The investigations were performed on the specimens of AISI 1045 steel, which is commonly used in electric machines. There were three categories of specimens, each of them representing a region in a surface hardened shaft – normalized specimens found in as-delivered steel (core), partially hardened specimens obtained by partial hardening of normalized specimens (transitional zone), and fully hardened specimens (hardened surface), also obtained from the normalized steel. Comparison of the magnetization curves showed that partially and fully hardened specimens exhibited a decrease of saturation magnetic flux density for about 11% and 7%, respectively, compared to the normalized specimens. The magnetizing curves from this study can be directly used in the magnetic simulations of a surface-hardened shaft. This allows more accurate electromagnetic design of electric machines, in which the shaft represents an important part of the magnetic circuit, e.g. two-pole wound-rotor synchronous machine.
Ključne besede: electric machine, hardening, hysteresis loop, magnetic properties, magnetizing curve, microstructure, shaft
Objavljeno v DiRROS: 16.10.2025; Ogledov: 511; Prenosov: 296
Celotno besedilo (2,71 MB)
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8. Thermodynamic guidelines for minimizing chromium losses in electric arc furnace steelmakingAnže Bajželj, Jaka Burja, 2025, pregledni znanstveni članek Povzetek: In the production of stainless steel, chromium losses, particularly in the electric arc furnace (EAF) phase, pose a challenge. This study addresses these issues by reviewing and analyzing the thermodynamics of the Fe-Cr-C-O-(Si) system, highlighting discrepancies in existing literature regarding Gibbs free energies, interaction parameters, and other thermodynamic data. We developed a simple to use thermodynamic model to simulate the oxidation process using established data from scientific literature. The model calculates the equilibrium solubilities of chromium and carbon, showing how process variables like temperature, partial pressure of carbon monoxide, and silicon concentration influence chromium oxidation. The findings confirm that higher temperatures and the presence of silicon significantly reduce chromium loss by favoring carbon oxidation over chromium. The research concludes by providing practical guidelines for minimizing chromium losses in EAFs, such as protecting scrap with carbon, silicon, and aluminum; controlling oxygen intake; and ensuring a high melt temperature during decarburization. These guidelines aim to improve the economic efficiency and sustainability of stainless steel production. The paper is an expanded version of a prior conference paper.
Ključne besede: steelmaking, thermodynamics, stainless steel, electric arc furnace (EAF), decarburization, oxidation of steel melt
Objavljeno v DiRROS: 15.10.2025; Ogledov: 669; Prenosov: 344
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10. Macro to micro stratigraphic and artefactual evidence from an Early Iron Age smithy at the Pungrt hillfort (Central Slovenia)Luka Gruškovnjak, Agni Prijatelj, Petra Vojaković, Jaka Burja, Barbara Šetina, Rok Brajkovič, Borut Toškan, Tjaša Tolar, Helena Grčman, Matija Črešnar, 2025, drugi znanstveni članki Ključne besede: Early Iron Age, geoarchaeology, micromorphology, microrefuse, archaeometallurgy, smithy, floor construction, floor maintenance, lime plaster, hammerscale
Objavljeno v DiRROS: 13.05.2025; Ogledov: 909; Prenosov: 309
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