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":"<p>The Ni–ZnFe<sub>2</sub>O<sub>4</sub> (Ni<sub><i>x</i></sub>Zn<sub>1−<i>x</i></sub>Fe<sub>2</sub>O<sub>4</sub>, <i>x</i> = 0.4–0.7) spinel was synthesized using Zn<sup>2+</sup> extracted from electric arc furnace dust (EAFD), nickel chloride hexahydrate, and Fe<sup>3+</sup> extracted from iron scale as raw materials. The zinc was selectively extracted from EAFD using CaO roasting followed by NH<sub>4</sub>Cl 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 (<i>x</i>) and calcination temperature on the synthesis and magnetic properties of Ni<sub><i>x</i></sub>Zn<sub>1−<i>x</i></sub>Fe<sub>2</sub>O<sub>4</sub> 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 Ni<sub><i>x</i></sub>Zn<sub>1−<i>x</i></sub>Fe<sub>2</sub>O<sub>4</sub>. Under the conditions of Ni content set at <i>x</i> = 0.6, calcination temperature of 1100 °C, and a duration of 2 h, a spinel Ni<sub><i>x</i></sub>Zn<sub>1−<i>x</i></sub>Fe<sub>2</sub>O<sub>4</sub> with high saturation magnetization (<i>M</i><sub>s</sub> = 65.7 A m<sup>2</sup> kg<sup>−1</sup>) and low coercivity (<i>H</i><sub>c</sub> = 0.056 A m<sup>−1</sup>) was obtained.</p>","PeriodicalId":16151,"journal":{"name":"Journal of Iron and Steel Research International","volume":"8 1","pages":""},"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}
{"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":"<p>Iron ore pellets, as one of the main charges of blast furnaces, have a greater impact on the CO<sub>2</sub> 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 N<sub>2</sub>. The results showed the reduction process is divided into two stages. The reduction in the initial stage (time <i>t</i> ≤ 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 (<i>t</i> > 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.</p>","PeriodicalId":16151,"journal":{"name":"Journal of Iron and Steel Research International","volume":"5 1","pages":""},"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}
Jing-wei Zhao, Qing-zhong Xie, Li-nan Ma, Cun-long Zhou, Zheng-yi Jiang, Xi Liao, Xiao-guang Ma
{"title":"Effect of rolling schedules on ridging resistance of ultra-thin ferritic stainless steel foil","authors":"Jing-wei Zhao, Qing-zhong Xie, Li-nan Ma, Cun-long Zhou, Zheng-yi Jiang, Xi Liao, Xiao-guang Ma","doi":"10.1007/s42243-024-01258-7","DOIUrl":"https://doi.org/10.1007/s42243-024-01258-7","url":null,"abstract":"<p>The effect of rolling schedules on the ridging resistance of ultra-thin ferritic stainless steel (FSS) 430 foil was evaluated by studying the microstructure and texture. The results show that specimens processed with three-pass cold rolling under the reductions of 40%, 40% and 31%, respectively, exhibit improved ridging resistance owing to the microstructural refinement and the texture structure optimization. A nearly 40% reduction of ridging height can be achieved using the proposed rolling schedule compared to the other two rolling schedules. In addition, the effect of annealing temperature after cold rolling on the ridging resistance of FSS 430 foil is also found to be crucial, and an optimal annealing temperature of 900 °C is obtained for FSS 430 foil with high ridging resistance. Overall, the improvement in the ridging resistance of FSS 430 foil can be attributed to the reduction in the fraction of {001}<110> and {114}<110> components by optimization of the rolling and annealing processes.</p>","PeriodicalId":16151,"journal":{"name":"Journal of Iron and Steel Research International","volume":"10 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141944433","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}
{"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":"<p>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 Mn<sub>50+<i>x</i></sub>Al<sub>50−<i>x</i></sub> (<i>x</i> = 1–8), and pure τ-phase can only be obtained in the alloys with <i>x</i> = 4–7. With Mn:Al ratio increasing, saturation magnetization <i>M</i><sub>s</sub> and magnetocrystalline anisotropy constant <i>K</i><sub>1</sub> are gradually weakened due to the incremental antiferromagnetic Mn-1<i>d</i> atoms, but Curie temperature of τ-phase is gradually increased induced by the strengthened <i>d−d</i> hybridization of Mn<sub>1<i>a</i></sub>−Mn<sub>1<i>d</i></sub>. An attempt of doping traces of Ti was carried out in order to eliminate the negative antiferromagnetic interaction derived from Mn-1<i>d</i> atom. Ti atoms tend to occupy 1<i>d</i> sites and replace the Mn-1<i>d</i> atoms due to the relatively fewer valence electrons compared with Mn, resulting in the reduction in Mn<sub>1<i>a</i></sub>−Mn<sub>1<i>d</i></sub> antiferromagnetic interactions, which is demonstrated by the higher <i>M</i><sub>s</sub> of Mn<sub>55−<i>y</i></sub>Al<sub>45</sub>Ti<sub><i>y</i></sub> (<i>y</i> = 1) than that of Mn<sub>55</sub>Al<sub>45</sub>. 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.</p>","PeriodicalId":16151,"journal":{"name":"Journal of Iron and Steel Research International","volume":"37 1","pages":""},"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}
{"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":"<p>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.</p>","PeriodicalId":16151,"journal":{"name":"Journal of Iron and Steel Research International","volume":"373 1","pages":""},"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}
{"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":"<p>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 × 10<sup>4</sup> A/cm<sup>2</sup> 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 Cu<sub>6</sub>Sn<sub>5</sub> 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 Cu<sub>6</sub>(Sn, Zn)<sub>5</sub>, which played as a diffusion barrier to effectively reduce the asymmetric growth of IMCs and the consumption of Cu substrate during electromigation.</p>","PeriodicalId":16151,"journal":{"name":"Journal of Iron and Steel Research International","volume":"78 1","pages":""},"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}
{"title":"Effect of h-BN rods on high-temperature properties of alumina–carbon refractory","authors":"Ya-ge Li, Shuai-bing Wu, Feng Liang, Zhong Huang, Tu Long, Long Dong, Jun-yi Lv, Hong-juan Duan, Biao Wen, Yong Liu, Hai-jun Zhang","doi":"10.1007/s42243-024-01284-5","DOIUrl":"https://doi.org/10.1007/s42243-024-01284-5","url":null,"abstract":"<p>h-BN rods modified low-carbon alumina–carbon (Al<sub>2</sub>O<sub>3</sub>–C) refractories were prepared, and the effect of h-BN rod addition on the high-temperature properties was investigated and compared with commercial h-BN flake, carbon black, and carbon nanotubes additives. The results demonstrated that Al<sub>2</sub>O<sub>3</sub>–C refractories containing h-BN rods exhibited optimal high-temperature service performances, including 25% higher hot modulus of rupture, 21.3% higher thermal shock strength residual ratio, 20.9% lower in oxidation and 44.3% less in slag corrosion, compared to the counterpart specimens without additives. Moreover, benefiting from the synergistic enhancement of the rod-like h-BN and in-situ generated SiC whiskers, the high-temperature service performances of h-BN rods containing specimens outperformed counterpart specimens containing commercial h-BN flake, carbon black, and carbon nanotubes, respectively.</p>","PeriodicalId":16151,"journal":{"name":"Journal of Iron and Steel Research International","volume":"26 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141944432","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}
Kai-hang Zhu, Yong-zhen Liang, Liu-kai Li, Ting-ting Zhang, Wen-xian Wang
{"title":"Effect of temperature compensation on properties and interfacial structure evolution of Al/CFRTP ultrasonic welded joints","authors":"Kai-hang Zhu, Yong-zhen Liang, Liu-kai Li, Ting-ting Zhang, Wen-xian Wang","doi":"10.1007/s42243-024-01299-y","DOIUrl":"https://doi.org/10.1007/s42243-024-01299-y","url":null,"abstract":"<p>5052 Al and carbon fiber-reinforced polyamide 6 composite (CF-PA6) were jointed via ultrasonic welding with the assistance of temperature compensation device. The effects of the ultrasonic welding time and temperature compensation on the microstructure and mechanical properties of the joints were investigated. Through analysis of the wettability and fluidity of the molten carbon fiber-reinforced thermoplastic composites (CFRTP), the bonding mechanism and failure path of Al/CFRTP were clarified. The results show that under the conditions of temperature compensation of 220 °C and welding time of 1500 ms, the joint strength of the two components reaches 2480.4 N, which is 813.6% higher than that of Al/CFRTP components obtained at room temperature. Overall, temperature compensation prolonged the wetting time of molten CFRTP on the aluminum alloy surface. When the fluidity and wettability were coordinated with each other, a high-quality joint was formed. In addition, the ultrasonic welding process of Al/CFRTP mainly relies on “physical adsorption,” “diffusion effect,” and “mechanical locking effect” to achieve sufficient bonding, and the effect of hydrogen bonding is weak.</p>","PeriodicalId":16151,"journal":{"name":"Journal of Iron and Steel Research International","volume":"9 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141944431","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}
Ting Wang, Bi-jun Hua, Xiang-jun Liu, Pei-hong Yang, Xiao-xia Shi, Ji-chun Yang, Li Zhou, Chang-qiao Yang
{"title":"Mechanism analysis of pitting induced by Al2O3 inclusions: insight from simulation calculation","authors":"Ting Wang, Bi-jun Hua, Xiang-jun Liu, Pei-hong Yang, Xiao-xia Shi, Ji-chun Yang, Li Zhou, Chang-qiao Yang","doi":"10.1007/s42243-024-01298-z","DOIUrl":"https://doi.org/10.1007/s42243-024-01298-z","url":null,"abstract":"<p>The micro-area characterization experiments like scanning Kelvin probe force microscope (SKPFM) and Kernel average misorientation have the defects of complex sample preparation and occasional errors in test results, which makes it impossible to accurately and quickly analyze the pitting behavior induced by inclusions in some cases, prompting attempts to turn to simulation calculation research. The method of calculating band structure and work function can be used to replace current-sensing atomic force microscopy and SKPFM to detect the potential and conductivity of the sample. The band structure results show that Al<sub>2</sub>O<sub>3</sub> inclusion is an insulator and non-conductive, and it will not form galvanic corrosion with the matrix. Al<sub>2</sub>O<sub>3</sub> inclusion does not dissolve because its work function is higher than that of the matrix. Moreover, the stress concentration of the matrix around the inclusion can be characterized by first-principles calculation coupled with finite element simulation. The results show that the stress concentration degree of the matrix around Al<sub>2</sub>O<sub>3</sub> inclusion is serious, and the galvanic corrosion is formed between the high and the low stress concentration areas, which can be used to explain the reason of the pitting induced by Al<sub>2</sub>O<sub>3</sub> inclusions.</p>","PeriodicalId":16151,"journal":{"name":"Journal of Iron and Steel Research International","volume":"30 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141944352","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}
Tong Wang, Yang-xin Wang, Chun-dong Hu, Peng-min Cao, Han Dong
{"title":"Mechanical properties and microstructure evolution of 1800 MPa grade low alloy ultrahigh strength steel during quenching and tempering process","authors":"Tong Wang, Yang-xin Wang, Chun-dong Hu, Peng-min Cao, Han Dong","doi":"10.1007/s42243-024-01289-0","DOIUrl":"https://doi.org/10.1007/s42243-024-01289-0","url":null,"abstract":"<p>The characterization techniques were employed like transmission electron microscope, X-ray diffraction and microstructural characterization to investigate microstructural evolution and impact of precipitate-phase precipitation on strength and toughness of a self-developed 32Si<sub>2</sub>CrNi<sub>2</sub>MoVNb steel during the quenching and tempering process. Research outputs indicated that the steel microstructure under the quenching state could be composed of martensite with a high dislocation density, a small amount of residual austenite, and many dispersed spherical MC carbides. In details, after tempering at 200 °C, fine needle-shaped ε-carbides would precipitate, which may improve yield strength and toughness of the steel. However, as compared to that after tempering at 200 °C, the average length of needle-shaped ε-carbides was found to increase to 144.1 ± 4 from 134.1 ± 3 nm after tempering at 340 °C. As a result, the yield strength may increase to 1505 ± 40 MPa, and the impact absorption energy (V-notch) may also decrease. Moreover, after tempering at 450 °C, those ε-carbides in the steel may transform into coarse rod-shaped cementite, and dislocation recoveries at such high tempering temperature may lead to decrease of strength and toughness of the steel. Finally, the following properties could be obtained: a yield strength of 1440 ± 35 MPa, an ultimate tensile strength of 1864 ± 50 MPa and an impact absorption energy of 45.9 ± 4 J, by means of rational composition design and microstructural control.</p>","PeriodicalId":16151,"journal":{"name":"Journal of Iron and Steel Research International","volume":"40 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141944353","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}