steel research international最新文献_第10页

Contents: steel research int. 8/2024 内容：国际钢铁研究协会8/2024

IF 1.9 3区材料科学

steel research international Pub Date : 2024-07-31 DOI: 10.1002/srin.202470083

引用次数: 0

Influence of Zr and Ti on MnS Inclusions, Microstructure, and Mechanical Properties of F38MnVS6 Steel Zr 和 Ti 对 F38MnVS6 钢中 MnS 杂质、微观结构和机械性能的影响

IF 2.2 3区材料科学

steel research international Pub Date : 2024-07-29 DOI: 10.1002/srin.202400153

Guoxing Qiu, Hongzhao Zhang, Feng Lu, Dejun Miao, Jianing Li, Yongkun Yang, Xiaoming Li

{"title":"Influence of Zr and Ti on MnS Inclusions, Microstructure, and Mechanical Properties of F38MnVS6 Steel","authors":"Guoxing Qiu, Hongzhao Zhang, Feng Lu, Dejun Miao, Jianing Li, Yongkun Yang, Xiaoming Li","doi":"10.1002/srin.202400153","DOIUrl":"https://doi.org/10.1002/srin.202400153","url":null,"abstract":"The influence of Zr and Ti on the inclusions, microstructure, and mechanical properties of three sets of steel prepared using a vacuum induction melting furnace is analyzed. In steel without Zr and Ti, MnS is mainly distributed in the grain boundary with a rod‐like or dendritic morphology, an average diameter of 10 μm, and a quantity of 2.08 × 104 m−3. After alloying with Zr and Ti, MnS in steel is evenly distributed and adopted a blocky or spherical morphology with an average diameter of 7.2 μm and a quantity of 11.01 × 104 m−3. The oxygen content in steel do not have a remarkable impact on the MnS morphology. ZrO2 and Ti2ZrO6 formed in steel display a slight lattice disregistry with MnS. During solidification, MnS precipitates easily as types I and III MnS, with oxides serving as the core. The MnS composite exhibits remarkable deformation resistance during forging. The addition of Zr and Ti increases the proportion of intragranular ferrite in steel and decreases the pearlite lamellae spacing and average grain size, increasing the yield strength from 745 to 820 MPa and the impact energy from 21 to 56 J at room temperature. Overall, the addition of Zr and Ti considerably improves the mechanical properties of steel.","PeriodicalId":21929,"journal":{"name":"steel research international","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141871472","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}

引用次数: 0

Optimization of Vortex Slag Entrainment during Ladle Teeming Process in the Continuous Casting of Automobile Outer Panel 汽车外板连铸中钢包浇注过程中涡流夹渣的优化设计

IF 2.2 3区材料科学

steel research international Pub Date : 2024-07-29 DOI: 10.1002/srin.202400322

Haichen Zhou, Haibo Li, Xiaoxuan Deng, Baisong Liu, Chenxi Ji, Bin Chen, Chong Wang, Changliang Zhao

{"title":"Optimization of Vortex Slag Entrainment during Ladle Teeming Process in the Continuous Casting of Automobile Outer Panel","authors":"Haichen Zhou, Haibo Li, Xiaoxuan Deng, Baisong Liu, Chenxi Ji, Bin Chen, Chong Wang, Changliang Zhao","doi":"10.1002/srin.202400322","DOIUrl":"https://doi.org/10.1002/srin.202400322","url":null,"abstract":"With the thinner of the automobile panel, the press crack defects caused by the large‐size calcium aluminate inclusions at the automakers become obvious. Herein, in order to stabilize the control of calcium aluminate inclusions in the molten steel, the vortex slag entrainment (VSE) of a 300 ton ladle is investigated by the numerical simulation. The effects of the steel throughput, cofferdam height close to the nozzle, and ladle bottom structure on the VSE are analyzed. Results demonstrate that the residual molten steel (RMS) in the ladle and the critical height of the vortex increase with the increasing of the steel throughput. The RMS increases with the increasing of the cofferdam height when the VSE occurs. When the cofferdam height is 50, 100, and 150 mm, the RMS are 4.71, 7.19, and 9.62 t at the initial time of the VSE with a 7.5 ton min−1 steel throughput. In addition, the industrial trial of transforming the flat bottom ladle into the slope bottom ladle is carried out to control the VSE and reduce the RMS. The average weight of the RMS after pouring 25 heats of the slope ladle bottom ladle is 1.85 t less than that of the flat bottom ladle.","PeriodicalId":21929,"journal":{"name":"steel research international","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141871731","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}

引用次数: 0

Observation of Initial Interfacial Reaction between High Aluminum Molten Steel and CaO–Al2O3 Inclusion at 1873 K Using Laser Confocal Scanning Microscopy and Micro‐Computerized Tomography 利用激光共聚焦扫描显微镜和微型计算机断层成像技术观察 1873 K 时高铝熔融钢与 CaO-Al2O3 包裹体之间的初始界面反应

IF 2.2 3区材料科学

steel research international Pub Date : 2024-07-29 DOI: 10.1002/srin.202300803

Weijian Wang, Yuan Gao, Ying Ren, Lifeng Zhang

{"title":"Observation of Initial Interfacial Reaction between High Aluminum Molten Steel and CaO–Al2O3 Inclusion at 1873 K Using Laser Confocal Scanning Microscopy and Micro‐Computerized Tomography","authors":"Weijian Wang, Yuan Gao, Ying Ren, Lifeng Zhang","doi":"10.1002/srin.202300803","DOIUrl":"https://doi.org/10.1002/srin.202300803","url":null,"abstract":"A new method is proposed to investigate the transient reaction between the CaO–Al2O3 inclusion from slag entrainment and the high aluminum molten steel. The confocal laser scanning microscopy, the X‐ray computerized tomography technology, and the scanning electron microscope‐energy dispersive spectrometer are combined to observe the variation of the size, shape, and composition of the entrained slag inclusion with time. The CaO in the inclusion is reduced by the dissolved aluminum in the molten steel. With the increase of the dissolved aluminum content from 0.02 to 5.73 wt%, the CaO in inclusions under equilibrium state decreased from 55 to 35 wt%. The reaction between the dissolved aluminum in the steel and the CaO in the calcium aluminate inclusion at 1873 K is discussed through thermodynamic and kinetic calculations, which are consistent with experimental results. It is indicated that the mass transfer coefficient of the CaO in the inclusion is 2.95 × 10−5 m s−1.","PeriodicalId":21929,"journal":{"name":"steel research international","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141871466","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}

引用次数: 0

Harmful Effects, Origin, and Control of Banded Structures in Electroplated Fasteners of High‐Carbon Steel 高碳钢电镀紧固件带状结构的有害影响、起源和控制

IF 2.2 3区材料科学

steel research international Pub Date : 2024-07-29 DOI: 10.1002/srin.202400112

Tao Zhang, Hu Long, Guoguang Cheng, Junyu Guo, Zhongyu Lei, Zhongzhong Xun

{"title":"Harmful Effects, Origin, and Control of Banded Structures in Electroplated Fasteners of High‐Carbon Steel","authors":"Tao Zhang, Hu Long, Guoguang Cheng, Junyu Guo, Zhongyu Lei, Zhongzhong Xun","doi":"10.1002/srin.202400112","DOIUrl":"https://doi.org/10.1002/srin.202400112","url":null,"abstract":"In this study, the harmful effects of a banded structure on the bending fracture of electroplated fasteners are investigated. The origins and ways to control these structures are also explored. The fracture surfaces of the fasteners exhibit stepwise cracks and numerous intergranular facets associated with ductile tearing, which is a characteristic of hydrogen embrittlement. The origin of these stepwise cracks can be traced to the internal banded structures. Therefore, the internal banded structures promote fracturing during the bending test. The internal banded structures in the fasteners can be traced back to the internal cracks in the bloom, and inappropriate soft‐reduction processes lead to internal cracks. Notably, the carbon segregation at the internal cracks is severe. This is attributed to the proximity of the internal cracks to the center of the bloom, causing the enriched liquid in the interdendritic region to be sucked into these internal cracks. The optimal reduction position and amount are determined by employing heat‐transfer and soft‐reduction models. Fluctuations in superheat and casting speed significantly influence this optimal position and reduction amount.","PeriodicalId":21929,"journal":{"name":"steel research international","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141871727","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}

引用次数: 0

Mechanisms of Strengthening and Fracture in 17%Cr Martensite/Ferrite Dual‐Phase Stainless Steels 17%Cr 马氏体/铁素体双相不锈钢的强化和断裂机制

IF 2.2 3区材料科学

steel research international Pub Date : 2024-07-29 DOI: 10.1002/srin.202400217

Ming‐Tao Wang, Yong‐Bo Liu, Xu Zhai, Nian‐Wang Li, Jian‐Feng Jin, Yong‐Chao Yang, Yan‐Zhong Tian

{"title":"Mechanisms of Strengthening and Fracture in 17%Cr Martensite/Ferrite Dual‐Phase Stainless Steels","authors":"Ming‐Tao Wang, Yong‐Bo Liu, Xu Zhai, Nian‐Wang Li, Jian‐Feng Jin, Yong‐Chao Yang, Yan‐Zhong Tian","doi":"10.1002/srin.202400217","DOIUrl":"https://doi.org/10.1002/srin.202400217","url":null,"abstract":"To clarify the strengthening mechanisms of medium‐chromium stainless steels (SSs) with carbides, ferrite, and martensite, 17%Cr SSs with varying martensite contents have been prepared, and the influence of martensite on microstructure, mechanical properties, and fracture has been investigated. According to THERMOCALC calculations, 17%Cr SS undergo a reversible phase transition between austenite and ferrite + M23C6 through the diffusion of carbon in austenite and M23C6 in the temperature range of 850–1220 °C. As the martensite content increases, M23C6 decreases, the martensite grain size increases, and the ferrite grain size initially increases and then decreases. Meanwhile, the yield strength and ultimate tensile strength increase, while both the uniform and post‐uniform elongation decrease. It is also found a decrease in work‐hardening index and an increase in work‐hardening rate with increasing martensite content. Under tensile loading, three types of voids are present in 17%Cr SS: type A only in the grain boundary (GB) area with M23C6 in martensite‐free material and type B and C in ferrite grains close to martensite grains and at ferrite/martensite GBs, respectively. An increase in martensite content leads to more voids, indicating a reduction in material plasticity caused by martensite.","PeriodicalId":21929,"journal":{"name":"steel research international","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141871468","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}

引用次数: 0

Thermodynamic Properties of Sulfur in the CaO–AlO1.5–CeO1.5 Slag System at 1873 K 1873 K 时 CaO-AlO1.5-CeO1.5 熔渣体系中硫的热力学性质

IF 2.2 3区材料科学

steel research international Pub Date : 2024-07-29 DOI: 10.1002/srin.202300504

Masaya Higuchi, Kazuki Morita

引用次数: 0

Titanium‐Dependent Kinetics of Ferrite Single‐Phase Recrystallization in Cold‐Rolled Ultra‐High‐Strength Low‐Alloy Steels During Annealing 冷轧超高强度低合金钢退火过程中铁素体单相再结晶的钛依赖动力学

IF 2.2 3区材料科学

steel research international Pub Date : 2024-07-29 DOI: 10.1002/srin.202300905

Sang Hun Shin, Jong Myeong Kim, Alexander Gramlich, Kwang Su Na

引用次数: 0

Numerical Study on the Effects of Variable Mushy Zone Constants on Fluid Flow and Heat Transfer in Bloom Mold 关于可变湿区常数对 Bloom 模具中流体流动和传热影响的数值研究

IF 2.2 3区材料科学

steel research international Pub Date : 2024-07-29 DOI: 10.1002/srin.202400327

Cheng Yao, Min Wang, Li Cao, Lidong Xing, Kai Li, Boteng Wang, Jian Song, Daichun Wei, Yanping Bao

{"title":"Numerical Study on the Effects of Variable Mushy Zone Constants on Fluid Flow and Heat Transfer in Bloom Mold","authors":"Cheng Yao, Min Wang, Li Cao, Lidong Xing, Kai Li, Boteng Wang, Jian Song, Daichun Wei, Yanping Bao","doi":"10.1002/srin.202400327","DOIUrl":"https://doi.org/10.1002/srin.202400327","url":null,"abstract":"In previous studies, the mushy zone constant was assigned a fixed value or a value associated with dendrite characteristics at room temperature. However, elucidating the constitutive behaviors of mushy dendrites at high temperatures using solid dendrite characteristics at room temperature poses challenges. In this study, a numerical model was constructed to investigate the effects of variable mushy zone constants on fluid flow and heat transfer in the mold. The results revealed that “Zone Z‐1/2” exhibited a thinner solidified shell compared with the other zones, indicating a close correlation between heat transfer and thickness differences. Under default simulation conditions, the liquid steel cooled rapidly, leading to the dissipation of superheat. The mushy zone exhibited a wide range, with almost no pure liquid phase present in the mold. In cases 2, 3, and 4 within “Zone Z‐1/2”, the average thickness of the solidified shell gradually increased during solidification, indicating the absence of evident remelting phenomena in the mold. As the variable mushy zone constants increased, the local temperature gradient increased, while the local cooling rate decreased. The accuracy of the numerical model was validated through actual measurements and empirical formulas. The simulation results for case 4 exhibited a high degree of fitting.","PeriodicalId":21929,"journal":{"name":"steel research international","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141871470","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}

引用次数: 0

Gasification Removal Behaviour of Phosphorus Compounds from High‐Phosphorous Iron Ore 高磷铁矿中磷化合物的气化脱除行为

IF 2.2 3区材料科学

steel research international Pub Date : 2024-07-26 DOI: 10.1002/srin.202400131

Jiazhan Liu, Tatsuya Kon, Takayuki Maeda, Ko‐ichiro Ohno, Kenichi Higuchi

{"title":"Gasification Removal Behaviour of Phosphorus Compounds from High‐Phosphorous Iron Ore","authors":"Jiazhan Liu, Tatsuya Kon, Takayuki Maeda, Ko‐ichiro Ohno, Kenichi Higuchi","doi":"10.1002/srin.202400131","DOIUrl":"https://doi.org/10.1002/srin.202400131","url":null,"abstract":"The gasification removal behaviour of phosphorus from high‐phosphorus iron ore is theoretically and experimentally studied in the temperature range of 400–900 °C under H2 reducing and N2 atmospheres. In the first step, thermodynamic analysis is conducted to reveal the gasification and reaction behaviours of common phosphorus compounds, namely P4O10, FePO4, AlPO4, Ca2P2O7, and Ca3(PO4)2. The results indicate that P4O10, FePO4, and AlPO4 under H2 reducing atmosphere and P4O10 under a N2 atmosphere can be removed by gasification, and the influence of the interaction between the vaporized gases and iron ore should be investigated. Therefore, dephosphorization experiments are performed on simulated iron ores containing P4O10, FePO4, or AlPO4. For the sample containing P4O10, ferric phosphates and iron phosphides are formed under the N2 and H2 reducing atmospheres, respectively, and their formation rates decreases with decreasing temperature, becoming almost stagnant at 400 °C. Moreover, it is confirmed that FePO4 and AlPO4 cannot be removed even when pure H2 is introduced.","PeriodicalId":21929,"journal":{"name":"steel research international","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141776653","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}

引用次数: 0