51. Influence of the deep cryogenic treatment on AISI 52100 and AISI D3 steelʼs corrosion resistancePatricia Jovičević Klug, Tjaša Kranjec, Matic Klug Jovičević, Tadeja Kosec, Bojan Podgornik, 2021, original scientific article Abstract: The effect of deep cryogenic treatment (DCT) on corrosion resistance of steels AISI 52100 and AISI D3 is investigated and compared with conventional heat-treated counterparts. DCTʼs influence on microstructural changes is subsequently correlated to the corrosion resistance. DCT is confirmed to reduce the formation of corrosion products on steelsʼ surface, retard the corrosion products development and propagation. DCT reduces surface cracking, which is considered to be related to modified residual stress state of the material. DCTʼs influence on each steel results from the altered microstructure and alloying element concentration that depends on steel matrix and type. This study presents DCT as an effective method for corrosion resistance alteration of steels.
Keywords: steel, deep cryogenic treatment, corrosion, Raman, open access
Published in DiRROS: 19.05.2023; Views: 319; Downloads: 229
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52. Leaching and geochemical modelling of an electric arc furnace (EAF) and ladle slag heapMojca Loncnar, Ana Mladenovič, Vesna Zalar Serjun, Marija Zupančič, Hans A. van der Sloot, 2022, original scientific article Abstract: Old metallurgical dumps across Europe represent a loss of valuable land and a potential threat to the environment, especially to groundwater (GW). The Javornik electric arc furnace (EAF) and ladle slag heap, situated in Slovenia, was investigated in this study. The environmental impact of the slag heap was evaluated by combining leaching characterization tests of landfill samples and geochemical modelling. It was shown that throughout the landfill the same minerals and sorptive phases control the leaching of elements of potential concern, despite variations in chemical composi- tion. Although carbonation of the disposed steel slags occurred (molar ratio CO3/(Ca+Mg) = 0.53) relative to fresh slag, it had a limited effect on the leaching behaviour of elements of potential concern. The leaching from the slag heaps had also a limited effect on the quality of the GW. A site-specific case, however, was that leachates from the slag heap were strongly diluted, since a rapid flow of GW fed from the nearby Sava River was observed in the landfill area. The sampling and testing approach applied provides a basis for assessing the long-term impact of release and is a good starting point for evaluating future management options, including beneficial uses for this type of slag.
Keywords: EAF slag, field verification, geochemical modelling, ladle slag, leaching, release prediction, steel slag heap
Published in DiRROS: 28.04.2023; Views: 388; Downloads: 205
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54. Current trends on mechanical, corrosion resistance, and antibacterial properties of metallic materials : editorialMarjetka Conradi, Aleksandra Kocijan, 2022, preface, editorial, afterword Keywords: steel, corrosion resistance, mechanical properties, antibacterial properties
Published in DiRROS: 22.06.2022; Views: 519; Downloads: 140
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55. Residual stress modeling and analysis in AISI A2 steel processed by an electrical discharge machineDinesh Kumar, Krishan Kant Singh Mer, Hoshiyar Singh Payal, Kapil Kumar, 2022, original scientific article Keywords: electro discharge machining, numerical simulation, residual stress, dielectric fluid, AISI A2 die steel, Gaussian distributed heat flux
Published in DiRROS: 22.06.2022; Views: 562; Downloads: 139
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56. High-temperature deformation behavior andhot-processing map of 25CrMo4 axle steel based onfriction correctionKeran Liu, Yuanming Huo, Tao He, Cunlong Huo, Changyuan Jia, Xiangyang Du, Baoyu Wang, 2021, original scientific article Keywords: 25CrMo4 axle steel, hot-compression test, hot processing map, friction correction
Published in DiRROS: 06.05.2022; Views: 502; Downloads: 125
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57. Classification of hot-rolled plates using the Mahalanobis distance of NMIs in Ti-stabilized austenitic stainless-steel produced by secondary metallurgyFranci Vode, Franc Tehovnik, Gorazd Kosec, Darja Steiner Petrovič, 2022, original scientific article Keywords: stainless steel, ferrotitanium, impurities, oxygen, nonmetallic inclusions, scrap recycling, automated inclusion analysis, Mahalanobis distance
Published in DiRROS: 06.05.2022; Views: 510; Downloads: 162
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59. The influence of the plasma-nitriding temperature on the microstructure evolution and surface properties of additive-manufactured 18Ni300 maraging steelMatjaž Godec, Francisco Ruiz-Zepeda, Bojan Podgornik, Črtomir Donik, Aleksandra Kocijan, Danijela Anica Skobir Balantič, 2022, original scientific article Keywords: maraging steel, powder bed fusion, plasma nitriding, microstructure, wear resistance, corrosion resistance
Published in DiRROS: 06.05.2022; Views: 605; Downloads: 212
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