Journal of Iron and Steel Research International最新文献_第3页

Process mechanism research on direct vortex melting reduction of vanadium–titanium magnetite 钒钛磁铁矿直接涡流熔融还原工艺机理研究

IF 2.5 2区材料科学

Journal of Iron and Steel Research International Pub Date : 2024-08-19 DOI: 10.1007/s42243-024-01290-7

Yong-chao Han, Zhi-he Dou, Zhan-ning Yang, Wei Xie, Ting-an Zhang

{"title":"Process mechanism research on direct vortex melting reduction of vanadium–titanium magnetite","authors":"Yong-chao Han, Zhi-he Dou, Zhan-ning Yang, Wei Xie, Ting-an Zhang","doi":"10.1007/s42243-024-01290-7","DOIUrl":"https://doi.org/10.1007/s42243-024-01290-7","url":null,"abstract":"In response to the new mechanism of direct vortex melting reduction of vanadium–titanium magnetite, the reaction control mechanism and the migration regularity of valuable components in the process of direct melting reduction were investigated using kinetic empirical equation by fitting and combining with X-ray diffraction, X-ray fluorescence, scanning electron microscopy, energy-dispersive spectrometry, and optical microscopy. The results show that iron reduction is controlled by the mass transfer process of (FeOx) in the slag, while vanadium reduction is controlled by both the mass transfer of (VOx) in the slag and the mass transfer of [V] in the molten iron, and the slag–metal interfacial reaction is the only pathway for vanadium reduction. The reduction of iron and vanadium is an obvious first-order reaction, with activation energy of 101.6051 and 197.416 kJ mol−1, respectively. Increasing the vortex rate and reaction temperature is beneficial to improving the reaction rate and reduction efficiency. The mineral phase variation of iron and vanadium in the slag during the reduction process is Fe2O3 → Fe3O4/FeV2O4 → FeTiO3 and FeV2O4 → MgV2O5; titanium in slag is mainly in the form of MgxTi3−xO5 (0 ≤ x ≤ 1) and CaTiO3. As the reaction time went on, the molar ratio (nTi/nMg) in MgxTi3−xO5 (0 ≤ x ≤ 1) and the Ti2O3 content in the slag gradually went up, while the area proportion of MgxTi3−xO5 (0 ≤ x ≤ 1) went up and then down, and the porosity of the slag and the grain size of MgxTi3−xO5 (0 ≤ x ≤ 1) got smaller.","PeriodicalId":16151,"journal":{"name":"Journal of Iron and Steel Research International","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142185751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Understanding thermal compression and deformation behavior of 3.15 wt.% Si non-oriented electrical steels prepared by sub-rapid solidification 了解亚快速凝固法制备的 3.15 重量%硅无取向电工钢的热压缩和变形行为

IF 2.5 2区材料科学

Journal of Iron and Steel Research International Pub Date : 2024-08-19 DOI: 10.1007/s42243-024-01303-5

Hui-hui Wang, Wan-lin Wang, Hua-long Li, Sheng-jie Wu, Pei-sheng Lyu, Bao-jun Zhao, Chen-yang Zhu

{"title":"Understanding thermal compression and deformation behavior of 3.15 wt.% Si non-oriented electrical steels prepared by sub-rapid solidification","authors":"Hui-hui Wang, Wan-lin Wang, Hua-long Li, Sheng-jie Wu, Pei-sheng Lyu, Bao-jun Zhao, Chen-yang Zhu","doi":"10.1007/s42243-024-01303-5","DOIUrl":"https://doi.org/10.1007/s42243-024-01303-5","url":null,"abstract":"Sub-rapid solidification has the potential to enhance the columnar structure and the magnetic property of electrical steels. However, research on the hot deformation behavior of sub-rapid solidified non-oriented electrical steel, particularly at varying strain rates, has yet to be fully understood. The effect of thermal compression on the microstructure and mechanical properties of 3.15 wt.% Si non-oriented electrical steel strips produced through a strip casting simulator was systematically investigated. The findings reveal that increasing the deformation temperature enhances grain recrystallization, while the peak stress decreases with higher temperature. Furthermore, a lower strain rate favors dynamic recrystallization and reduces thermal stress. It can be seen that sub-rapid solidification can effectively reduce the thermal activation energy of non-oriented electrical steel, and the thermal activation energy is calculated to be 204.411 kJ/mol. In addition, the kinetic models for the dynamic recrystallization volume fraction of the studied 3.15 wt.% Si non-oriented electrical steel were established.","PeriodicalId":16151,"journal":{"name":"Journal of Iron and Steel Research International","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142185731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Enhanced corrosion resistance and electrical conductivity of stainless steel bipolar plates by molybdenum ion implantation 通过钼离子注入增强不锈钢双极板的耐腐蚀性和导电性

IF 2.5 2区材料科学

Journal of Iron and Steel Research International Pub Date : 2024-08-17 DOI: 10.1007/s42243-024-01296-1

Li Ding, Hu-bin Zhang, Rui-juan Wang, Yong Pan, Xin Zhang, Meng Yang

引用次数: 0

Impacts of near-Ms austempering treatment on microstructure evolution and bainitic transformation kinetics of a medium Mn steel 近锰奥氏体化处理对中锰钢微观组织演变和贝氏体转变动力学的影响

IF 2.5 2区材料科学

Journal of Iron and Steel Research International Pub Date : 2024-08-14 DOI: 10.1007/s42243-024-01285-4

Yong-gang Yang, Xin-yue Liu, Rui-zhi Li, Yu-lai Chen, Hong-xiang Wu, Guo-min Sun, Zhen-li Mi

{"title":"Impacts of near-Ms austempering treatment on microstructure evolution and bainitic transformation kinetics of a medium Mn steel","authors":"Yong-gang Yang, Xin-yue Liu, Rui-zhi Li, Yu-lai Chen, Hong-xiang Wu, Guo-min Sun, Zhen-li Mi","doi":"10.1007/s42243-024-01285-4","DOIUrl":"https://doi.org/10.1007/s42243-024-01285-4","url":null,"abstract":"The microstructure evolution and bainitic transformation of an Fe–0.19C–4.03Mn–1.48Si steel subjected to near-Ms austempering treatment were systematically investigated by combining dilatometer, X-ray diffraction, and electron microscopy. Three additional austempering treatments with isothermal temperatures above Ms were used as benchmarks. Results show that the incubation period for the bainitic transformation occurs when the medium Mn steel is treated with the austempering temperature above Ms. However, when subjected to near-Ms isothermal treatment, the medium Mn steel does not show an incubation period and has the fastest bainitic transformation rate. Moreover, the largest volume fraction of bainite with a value of 74.7% is obtained on the condition of near-Ms austempering treatment after cooling to room temperature. Dilatometer and microstructure evolution analysis indicates that the elimination of the incubation period and the fastest rate of bainitic transformation are related to the preformed martensite. The advent of preformed martensite allows the specimen to generate more bainite in a limited time. Considering bainitic ferrite nucleation at austenite grain boundaries and through autocatalysis at ferrite/austenite interfaces, a model is established to understand the kinetics of bainite formation and it can describe the nucleation rate of bainitic transformation well when compared to the experimental results.","PeriodicalId":16151,"journal":{"name":"Journal of Iron and Steel Research International","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142185795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Isothermal reduction kinetics and reduction prediction for iron ore pellets 铁矿球团的等温还原动力学和还原预测

IF 2.5 2区材料科学

Journal of Iron and Steel Research International Pub Date : 2024-08-13 DOI: 10.1007/s42243-024-01294-3

Fei Meng, Hao Liu, Yue-lin Qin, Huang-jie Hua, Yin Deng, Ze-zheng Sun, Long-hai Liu

{"title":"Isothermal reduction kinetics and reduction prediction for iron ore pellets","authors":"Fei Meng, Hao Liu, Yue-lin Qin, Huang-jie Hua, Yin Deng, Ze-zheng Sun, Long-hai Liu","doi":"10.1007/s42243-024-01294-3","DOIUrl":"https://doi.org/10.1007/s42243-024-01294-3","url":null,"abstract":"Iron ore pellets, as one of the main charges of blast furnaces, have a greater impact on the CO2 emission reduction and stable operation of blast furnaces. The isothermal reduction behavior of the pellets obtained from a Chinese steel plant was studied in the gas mixtures of CO and N2. The results showed the reduction process is divided into two stages. The reduction in the initial stage (time t ≤ 40 min) is cooperatively controlled by internal diffusion and interface chemical reactions with the activation energy of 30.19 and 16.67 kJ/mol, respectively. The controlling step of the reduction in the final stage (t > 40 min) is internal diffusion with the activation energy of 34.60 kJ/mol. The reduction process can be described by two equations obtained from kinetic calculations. The reduction degree can be predicted under different temperatures and time, and the predicted results showed an excellent correlation with the experimental results. The reduction mechanisms were confirmed by the analysis of the scanning electron microscope equipped with an energy dispersive spectrometer and optical microscope.","PeriodicalId":16151,"journal":{"name":"Journal of Iron and Steel Research International","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142185752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Fabrication of Ni–Zn spinel ferrite with superior magnetic performance from electric arc furnace dust and iron scale 利用电弧炉粉尘和铁鳞制备磁性能优异的镍锌尖晶石铁氧体

IF 2.5 2区材料科学

Journal of Iron and Steel Research International Pub Date : 2024-08-13 DOI: 10.1007/s42243-024-01270-x

Yang Li, Wei-zhe Jie, Chang Chen, Yi Su, Wu Zhou, Hua Zhang, Hong-wei Ni

{"title":"Fabrication of Ni–Zn spinel ferrite with superior magnetic performance from electric arc furnace dust and iron scale","authors":"Yang Li, Wei-zhe Jie, Chang Chen, Yi Su, Wu Zhou, Hua Zhang, Hong-wei Ni","doi":"10.1007/s42243-024-01270-x","DOIUrl":"https://doi.org/10.1007/s42243-024-01270-x","url":null,"abstract":"The Ni–ZnFe2O4 (NixZn1−xFe2O4, x = 0.4–0.7) spinel was synthesized using Zn2+ extracted from electric arc furnace dust (EAFD), nickel chloride hexahydrate, and Fe3+ extracted from iron scale as raw materials. The zinc was selectively extracted from EAFD using CaO roasting followed by NH4Cl solution leaching. The ferric ion was leached from iron scale using HCl solution as acid lixiviant. The experimental results demonstrate a high level of efficiency in the extraction of zinc, with a rate of 97.5%, and the leaching rate of ferric ion is 96.89%. The composition of the leaching solution is primary zinc and iron with low calcium, which is beneficial to the preparation of spinel ferrite. The influence of Ni content (x) and calcination temperature on the synthesis and magnetic properties of NixZn1−xFe2O4 compounds was investigated by X-ray diffraction, scanning electron microscopy, and vibrating sample magnetometry. The results revealed that both Ni content and calcination temperature significantly affect the synthesis and magnetic properties of spinel NixZn1−xFe2O4. Under the conditions of Ni content set at x = 0.6, calcination temperature of 1100 °C, and a duration of 2 h, a spinel NixZn1−xFe2O4 with high saturation magnetization (Ms = 65.7 A m2 kg−1) and low coercivity (Hc = 0.056 A m−1) was obtained.","PeriodicalId":16151,"journal":{"name":"Journal of Iron and Steel Research International","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142185783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Effect of rolling schedules on ridging resistance of ultra-thin ferritic stainless steel foil 轧制时间表对超薄铁素体不锈钢箔抗脊性的影响

IF 2.5 2区材料科学

Journal of Iron and Steel Research International Pub Date : 2024-08-12 DOI: 10.1007/s42243-024-01258-7

Jing-wei Zhao, Qing-zhong Xie, Li-nan Ma, Cun-long Zhou, Zheng-yi Jiang, Xi Liao, Xiao-guang Ma

引用次数: 0

Compositional correlations to intrinsic magnetic properties in binary and Ti-alloyed MnAl magnetic alloys 二元和钛合金 MnAl 磁性合金中成分与固有磁性能的相关性

IF 2.5 2区材料科学

Journal of Iron and Steel Research International Pub Date : 2024-08-12 DOI: 10.1007/s42243-024-01239-w

Shuang Zhao, Ying Dong, Yu-xiao Jia, Yi-chen Xu, Yu-ye Wu

{"title":"Compositional correlations to intrinsic magnetic properties in binary and Ti-alloyed MnAl magnetic alloys","authors":"Shuang Zhao, Ying Dong, Yu-xiao Jia, Yi-chen Xu, Yu-ye Wu","doi":"10.1007/s42243-024-01239-w","DOIUrl":"https://doi.org/10.1007/s42243-024-01239-w","url":null,"abstract":"MnAl rare-earth-free permanent magnets exhibit excellent advantages from economic and resource perspectives, which have attracted extensive attentions in recent decades. We reported the evolution in phase formation and intrinsic magnetic properties of τ-phase in binary MnAl alloys with the variation in Mn:Al ratios. Ferromagnetic τ-phase can be generated within the compositional range of Mn50+xAl50−x (x = 1–8), and pure τ-phase can only be obtained in the alloys with x = 4–7. With Mn:Al ratio increasing, saturation magnetization Ms and magnetocrystalline anisotropy constant K1 are gradually weakened due to the incremental antiferromagnetic Mn-1d atoms, but Curie temperature of τ-phase is gradually increased induced by the strengthened d−d hybridization of Mn1a−Mn1d. An attempt of doping traces of Ti was carried out in order to eliminate the negative antiferromagnetic interaction derived from Mn-1d atom. Ti atoms tend to occupy 1d sites and replace the Mn-1d atoms due to the relatively fewer valence electrons compared with Mn, resulting in the reduction in Mn1a−Mn1d antiferromagnetic interactions, which is demonstrated by the higher Ms of Mn55−yAl45Tiy (y = 1) than that of Mn55Al45. However, with further substitution of Mn by Ti, unfavorable κ-phase is unavoidably generated. Finally, the occupation preference and the corresponding influences on local magnetic interactions as well as the magnetizations of the different alloying atoms including interstitial element C, 3d atoms Ti, Co and Cu, and main-group element Ga are systematically summarized, in order to offer the guidance of designing MnAl permanent magnets with ideal magnetic properties.","PeriodicalId":16151,"journal":{"name":"Journal of Iron and Steel Research International","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142185753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Influence of Al foil interlayer on performance of vacuum diffusion bonding joint of 6061 aluminium alloy 铝箔夹层对 6061 铝合金真空扩散粘接接头性能的影响

IF 2.5 2区材料科学

Journal of Iron and Steel Research International Pub Date : 2024-08-12 DOI: 10.1007/s42243-024-01302-6

Da-shuang Liu, Jian-hua Xu, Xiong-hui Li, Ping Wei, Yun Liang, Jian Qin, Hua-wei Sun, Tian-ran Ding, Zong-ye Ding, Su-juan Zhong, Lei Zhang, Wei-min Long

{"title":"Influence of Al foil interlayer on performance of vacuum diffusion bonding joint of 6061 aluminium alloy","authors":"Da-shuang Liu, Jian-hua Xu, Xiong-hui Li, Ping Wei, Yun Liang, Jian Qin, Hua-wei Sun, Tian-ran Ding, Zong-ye Ding, Su-juan Zhong, Lei Zhang, Wei-min Long","doi":"10.1007/s42243-024-01302-6","DOIUrl":"https://doi.org/10.1007/s42243-024-01302-6","url":null,"abstract":"The vacuum diffusion bonding method was used to introduce Al foil as the middle layer, and 6061 aluminium alloy was vacuum diffusion bonding together. The typical microstructure characteristics and mechanical properties of 6061/Al/6061 welded joints were studied in detail, the effects of process parameters and Al intermediate layer on the microstructure and mechanical properties were revealed, and the diffusion bonding mechanism of 6061/Al/6061 welded joints was described. Al foil middle layer welded joint had the best performance at the temperature of 540 °C, the holding time of 120 min, and the welding pressure of 4 MPa. The bonding ratio is 95.91%, the shear strength is 79 MPa, and the deformation rate is 8.05%, and the introduction of Al intermediate layer improves the element distribution and microstructure, so that the bonding ratio of the welded joint is increased by 10.86%, the shear strength is increased by 5.55 MPa, and the deformation rate is reduced by 1.58%. The fracture morphology has typical ductile fracture characteristics.","PeriodicalId":16151,"journal":{"name":"Journal of Iron and Steel Research International","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141944434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Effect of trace Zn addition on electromigration of Cu/Sn–10Bi/Cu solder joints 添加微量锌对 Cu/Sn-10Bi/Cu 焊点电迁移的影响

IF 2.5 2区材料科学

Journal of Iron and Steel Research International Pub Date : 2024-08-12 DOI: 10.1007/s42243-024-01301-7

Jia-yu Zhang, Feng-jiang Wang, Yan-xin Qiao

{"title":"Effect of trace Zn addition on electromigration of Cu/Sn–10Bi/Cu solder joints","authors":"Jia-yu Zhang, Feng-jiang Wang, Yan-xin Qiao","doi":"10.1007/s42243-024-01301-7","DOIUrl":"https://doi.org/10.1007/s42243-024-01301-7","url":null,"abstract":"The electromigration reliability on Sn–10Bi solder joints is investigated and the performance is tried to be improved with trace Zn addition in solder by depressing the growth of interfacial intermetallic compounds (IMCs) under electromigration. The electromigration test was realized on Cu/solder/Cu linear specimens at a current density of 1.0 × 104 A/cm2 with different stressing time. It was found that Bi atoms in Cu/Sn–10Bi/Cu solder joint were driven towards anode side under current driving force and then accumulated at anode interface with current stressing time increasing. The thickness and growth rate of Cu6Sn5 IMCs at anode interface were obviously larger than those at cathode side due to polarity effect. The addition of 0.2 wt.% Zn inhibited the migration of Bi atoms during the electromigration process, and the composition of interfacial IMCs was transformed into Cu6(Sn, Zn)5, which played as a diffusion barrier to effectively reduce the asymmetric growth of IMCs and the consumption of Cu substrate during electromigation.","PeriodicalId":16151,"journal":{"name":"Journal of Iron and Steel Research International","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141944354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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