steel research international最新文献

{"title":"Contents: steel research int. 11/2024","authors":"","doi":"10.1002/srin.202470113","DOIUrl":"https://doi.org/10.1002/srin.202470113","url":null,"abstract":"","PeriodicalId":21929,"journal":{"name":"steel research international","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/srin.202470113","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142525417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"","authors":"","doi":"10.1002/srin.202300677","DOIUrl":"https://doi.org/10.1002/srin.202300677","url":null,"abstract":"<p>He started his professional career between 1976 and 1979 as a research associate in the Department of Industrial Furnaces and Heat Engineering of RWTH Aachen University. He then took positions in the steel industry from 1979 till 2002. He first served at Vereinigte Deutsche Metallwerke as manager quality and research of the melt shop Unna. Since 1987 he headed the metallurgical department of Krupp Nirosta (later ThyssenKrupp Nirosta).</p><p>After habilitation In 1998 he became, in addition to his industrial activity, private lecturer (Privat-Dozent) at the RWTH Aachen for the topic Metallurgy and High Temperature Reaction Technique. In 2002, Piotr Scheller accepted the call for the Chair of Iron and Steel Metallurgy at TU Bergakademie Freiberg in Saxony. Until January 2012 he headed the Institute for Iron and Steel Technology which can look back on a long and important history. He also served as the dean of the Faculty for Materials Science and Materials Engineering, he initiated collaborations between the TU Freiberg and universities in Poland, China, South Korea, Sweden and Ukraine. In 2011 he received the »Medal of Honor« from the Academy for Mining and Metallurgy Krakow for his scientific achievements in Saxony-Polish cooperation. During his active time in Freiberg he built up a laboratory with the most modern experimental techniques for the measurements of surface tension and viscosities of molten phase at steelmaking temperatures along with numerous other experimental equipment. Since his retirement he has been invited as visiting professor by a number of famous universities in the world.</p><p></p><p>His achievements in the scientific field are comprehensive and very diverse. Based on industrial experiments, Piotr Scheller described the flow behavior in the ladle and delivered important contributions to the kinetics of nitrogen transfer between gas and Cr-Ni-alloys. The precipitation of non-metallic inclusions especially in the continuous casting process was the starting point for the investigation of the interfacial phenomena between liquid steel and slag. In fact, his contributions in the area of interfacial phenomena and the application of the same in process metallurgy are extremely important in modelling various two phase reactions in metallurgical processes. Professor Scheller has been author of ca. 200 publications in reputed journals in the field of process metallurgy. His contributions to the book “Treatise on Process Metallurgy”, Elsevier publications, both as section editor as well as a contributor to several chapters, are highly significant. The 2nd edition of this book, scheduled early 2024, will see further contributions of him. He is owner of 6 patents/patent applications in the field if iron and steelmaking.</p><p>This special issue in steel research international is dedicated to Professor Scheller on the occasion of his 75th birthday in 2024. We hope for many future meetings with this charming scientist and wish him man","PeriodicalId":21929,"journal":{"name":"steel research international","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/srin.202300677","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142525416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Contents: steel research int. 10/2024","authors":"","doi":"10.1002/srin.202470103","DOIUrl":"https://doi.org/10.1002/srin.202470103","url":null,"abstract":"","PeriodicalId":21929,"journal":{"name":"steel research international","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/srin.202470103","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142359943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Continuous Casting Tundish Dead Volume Study by Physical Modeling and Computational Investigation","authors":"Soumitra Kumar Dinda,&nbsp;Donghui Li,&nbsp;Fernando Guerra,&nbsp;Chad Cathcart,&nbsp;Mansoor Barati","doi":"10.1002/srin.202400125","DOIUrl":"https://doi.org/10.1002/srin.202400125","url":null,"abstract":"<p>Flow efficiency in a two-strand continuous casting tundish is studied by analyzing the residential time distribution (RTD) curves in a small-scale tundish water model using a conductive NaCl solution tracer. The velocity fields in the tundish water model are measured by particle image velocimetry, which is used to validate the results of the mathematical model in the article. It is found that the tracer concentration has a significant impact on the predicted dead volume fraction in the RTD analysis. Validated mathematical modeling of the computational fluid dynamics (CFD) technology is performed to explore the root cause of the defective results in the RTD analysis. It is found that the flow inside the tundish is sensitive to density variations caused by the injected tracer. A denser tracer will stay lower in the tundish by gravity and flow out of the tundish more quickly. A proper tracer concentration in the water model experiments is discussed to visualize the dead volume and improve tundish furniture design efficiently for future work, a new method using CFD modeling is proposed in this article, which can directly demonstrate the dead volume's location.</p>","PeriodicalId":21929,"journal":{"name":"steel research international","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142525521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of Central Coke Ratio on the Internal State of Blast Furnace","authors":"Pengbo Liu, Shusen Cheng, Zhao Liu","doi":"10.1002/srin.202400356","DOIUrl":"https://doi.org/10.1002/srin.202400356","url":null,"abstract":"Central coke charging (CCC) is a widely used burden distribution method for blast furnaces (BFs). Adjusting the central coke ratio can change the burden temperature field and affect the smooth operation of BF. This study presents a coupled physical and mathematical model, incorporating particle motion, gas flow, and heat transfer between the burden and gas in two 5500 m<jats:sup>3</jats:sup> BFs. The central coke ratios of the blast furnace A (BFA) and blast furnace B (BFB) is 15% and 20%, respectively. The root positions of the cohesive zone in the BFA and BFB are in the lower part of the stack and bosh zones, respectively. In the central area of the BF, the gas flow rate, gas temperature, and burden temperature of the BFB are higher. In the edge area of the BF, the gas flow rate, gas temperature, and burden temperature of the BFA are higher. The actual top gas temperature and gas pressure verify the accuracy of the proposed model. This model investigates the influence of the central coke ratio on the position of the cohesive zone, gas flow rate, gas temperature, and burden temperature, providing a cost‐effective method for studying the effect of the burden distribution matrix on the internal state of the BF.","PeriodicalId":21929,"journal":{"name":"steel research international","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142251823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental Determination of Slag Emissivities for Enhanced Slag Control by Infrared‐Based Systems","authors":"Bharath Vasudev Rangavittal, Herbert Köchner, Björn Glaser","doi":"10.1002/srin.202400277","DOIUrl":"https://doi.org/10.1002/srin.202400277","url":null,"abstract":"For today's high‐quality steel production, good control of slag composition is essential in secondary steelmaking. However, the conventional slag analysis practice, involving sampling, sample preparation, and analysis, is very time‐consuming. This work is the first step toward an investigation of infrared (IR)‐based systems and can be used for online slag composition monitoring using the principle that different slag compositions have different emissivities in the IR wavelength range. Therefore, this work experimentally determines emissivity values of slags as a function of composition at steelmaking temperature, since available data for slags are very limited in the literature. The emissivities of three different slag compositions belonging to the Al<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub>–CaO–SiO<jats:sub>2</jats:sub>–MgO system are investigated at 1773 K. The investigated emissivities are in the range of 0.75–0.87, with the best repeatability seen in the slag which is fully liquid at 1773 K. Variations in emissivities are observed within the other slags due to the presence of solid phases. Although the data clearly indicate a difference of emissivities as a function of slag composition, further experiments must be performed to evaluate the emissivities of other characteristic slags at different temperatures in order to further assess the applicability of IR‐based systems for slag composition control.","PeriodicalId":21929,"journal":{"name":"steel research international","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142251822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Influence of Microstructure and Process Design on the Plastic Stability of 4 wt% Medium‐Manganese Steels","authors":"Oguz Gülbay, Klaus Büßenschütt, Aleksandra Kozlowska, Adam Grajcar, Alexander Gramlich","doi":"10.1002/srin.202400575","DOIUrl":"https://doi.org/10.1002/srin.202400575","url":null,"abstract":"The influence of different microstructures on the plastic stability of an air‐hardened industrially produced medium‐manganese steel is presented. For this matter, heat treatment parameters before and during intercritical annealing (IA) are varied, to achieve different microstructures. The resulting duplex microstructure is consecutively tested by tensile tests, which are monitored by digital image correlation (DIC) to obtain information on the local plastic deformation. The tests are accompanied by microstructure investigations using optical, scanning electron, and transmission electron microscopy. Finally, X‐ray and electron backscatter diffraction experiments are performed before and after deformation, to describe the altering phase fractions. It is demonstrated that the effect of the deformation temperature prior to IA treatment has a significant influence on the duplex microstructure, as it changes the austenite morphology from lamellar to globular and increases the phase fraction. The change in austenite phase fraction and morphology results in a higher yield strength (≈100 MPa), as well as higher uniform and total elongations (+2% and +5%, respectively). The DIC and tensile tests reveal that these differences in the austenite phase lead to a complete change in the strain hardening behavior, from continuous flow to discontinuous serrated flow, with clearly visible deformation bands during plastic deformation.","PeriodicalId":21929,"journal":{"name":"steel research international","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142251820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Phenomenological Study of the Atomization Process in Pre‐Filming Nozzles Typically Used for Steel Atomization","authors":"Tom Kasper, Max Finster, Rüdiger Schwarze","doi":"10.1002/srin.202400138","DOIUrl":"https://doi.org/10.1002/srin.202400138","url":null,"abstract":"Liquid steel atomization using close‐coupled nozzles is highly dependent on the relationship between momentum flux ratio, gas–liquid ratio, aspiration pressure, and operating pressure of inert gases. A strong correlation between these parameters and the final powder must be assumed. Understanding these parameters, their influence on the process, and their interactions with each other is indispensable for efficient powder production. In particular, the industrial application of close‐coupled atomization nozzles, which develop a thin pre‐film on the nozzle tip, is not yet fully understood. A model experiment is presented to investigate interactions between the flow conditions of the gaseous and liquid phases, focusing on recirculation phenomena inside the atomization zone. The experiments show the influence of liquid and gas flow conditions on the spray geometry and the liquid core length, as well as the strong dependence of the liquid mass flux on the gas flow. The aspiration pressure below the liquid nozzle is sensitive to gas pressure and has a major influence on the development of the liquid core and the pre‐film, as it increases the liquid mass flux. For practical application, the results confirm an optimal operating point of interacting system parameters, which leads to high‐quality atomization with minimal use of resources.","PeriodicalId":21929,"journal":{"name":"steel research international","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142251826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Densities, Surface Tensions, and Viscosities of Molten High‐Silicon Electrical Steels with Different Silicon Contents","authors":"Lukas Neubert, Matheus Roberto Bellé, Taisei Yamamoto, Tsuyoshi Nishi, Hidemasa Yamano, Frank Ahrenhold, Olena Volkova","doi":"10.1002/srin.202400237","DOIUrl":"https://doi.org/10.1002/srin.202400237","url":null,"abstract":"Density, surface tension, and viscosity of various liquid electrical steels are measured at different temperatures, varying in their silicon content between 3 and 6 mass%. Density and surface tension are determined using the maximum bubble pressure method, while viscosity is investigated comparatively using a vibrating finger viscometer and an oscillating crucible viscometer. The results are compared with models known from the literature. Based on this, the density of the steel [<jats:italic>ρ</jats:italic>] = kg m<jats:sup>−3</jats:sup> and the surface tension [<jats:italic>σ</jats:italic>] = N m<jats:sup>−1</jats:sup> can be described as a function of temperature [<jats:italic>θ</jats:italic>] = °C and silicon content [Si] = mass% using the equations: , . There is a lack of experimental data in the literature for high‐temperature thermophysical properties for electrical steels. This underlines once again the novelty and significance of this study, as the determined thermophysical properties are essential for a wide range of applications. For instance, they are crucial in the production of metallic powders for additive manufacturing by atomization to adjust the properties of the powders precisely. The findings are also important for steelmaking itself, as the corrosion behavior of refractory material can be better determined.","PeriodicalId":21929,"journal":{"name":"steel research international","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142251824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Physically Based Mean Field Model for Strain‐Induced Precipitation and Recrystallization in High‐Strength Low‐Alloy Steels","authors":"Maria‐Ioanna T. Tzini, Gregory N. Haidemenopoulos","doi":"10.1002/srin.202400493","DOIUrl":"https://doi.org/10.1002/srin.202400493","url":null,"abstract":"A physically based mean field model developed to predict the microstructural evolution during the thermomechanical control process of X70 high‐strength low‐alloy (HSLA) steels is presented. The physically based mean field model incorporates a new integrated precipitation and recrystallization model developed to describe the interaction between strain‐induced precipitation of niobium and titanium carbonitrides and static recrystallization of austenite. The integrated model considers an effective Zener pinning force for the multimodal particle size distribution (PSD) of precipitates, an effective grain‐boundary mobility for the solute drag effect of niobium, and an inhomogeneous stored energy for austenite recrystallization. Given a processing route, the model predicts the variation of austenite grain size, recrystallized and precipitated fractions, and evolution of PSDs of precipitates. Model predictions reveal an excellent agreement with experimental grain size measurements and a final average ferrite grain size of 3.81 μm is achieved. The proposed model considers the heterogeneous nature of recrystallization and precipitation and can contribute to the process design of the HSLA and microalloyed steels.","PeriodicalId":21929,"journal":{"name":"steel research international","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142251825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}