Pub Date : 2025-09-01DOI: 10.1016/S1003-6326(25)66866-X
Xin YE , Qian LU , Lu-tong WU , Ming-liang XU , XIANG Xiong , Feng-ze JIANG
To overcome reliance on molds and the difficulty of fabricating complex geometries with traditional C/C composites, direct ink writing (DIW) with UV/heat dual curing was employed to produce high-performance C/C composites. The rheological properties of the composite inks were systematically analyzed to assess the effects of phenolic resin (PR) and carbon fiber (CF) content. Results show pronounced shear-thinning behavior and strong thixotropy—both essential for stable DIW. Additionally, UV/heat curing behavior was characterized to provide theoretical insights for optimizing curing parameters. Notably, CF additionis found to significantly attenuate UV light penetration compared to pure PR. As CF content increases, the critical UV irradiation energy rises sharply from 68.47 to 911.19 mJ/cm2, necessitating precise adjustments to curing parameters. Preforms were pyrolyzed in a carbon tube furnace to examine pore-formation characteristics, and chemical vapor infiltration (CVI) was applied to filling the resulting pores, yielding C/C composites with a flexural strength of 115.19 MPa.
{"title":"Rheology, curing behavior, and porosity evolution in dual curing direct ink writing of carbon/carbon composites","authors":"Xin YE , Qian LU , Lu-tong WU , Ming-liang XU , XIANG Xiong , Feng-ze JIANG","doi":"10.1016/S1003-6326(25)66866-X","DOIUrl":"10.1016/S1003-6326(25)66866-X","url":null,"abstract":"<div><div>To overcome reliance on molds and the difficulty of fabricating complex geometries with traditional C/C composites, direct ink writing (DIW) with UV/heat dual curing was employed to produce high-performance C/C composites. The rheological properties of the composite inks were systematically analyzed to assess the effects of phenolic resin (PR) and carbon fiber (CF) content. Results show pronounced shear-thinning behavior and strong thixotropy—both essential for stable DIW. Additionally, UV/heat curing behavior was characterized to provide theoretical insights for optimizing curing parameters. Notably, CF additionis found to significantly attenuate UV light penetration compared to pure PR. As CF content increases, the critical UV irradiation energy rises sharply from 68.47 to 911.19 mJ/cm<sup>2</sup>, necessitating precise adjustments to curing parameters. Preforms were pyrolyzed in a carbon tube furnace to examine pore-formation characteristics, and chemical vapor infiltration (CVI) was applied to filling the resulting pores, yielding C/C composites with a flexural strength of 115.19 MPa.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 9","pages":"Pages 3057-3073"},"PeriodicalIF":4.7,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145247876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-01DOI: 10.1016/S1003-6326(25)66869-5
Ya SUN , Zi-jun YUAN , Ji-wen HUANG , Jian-tai ZHANG , Fu-quan LI , Jian-xin LIU
A P-wave velocity model was built in the central southern of the TanluFault based on double-difference tomography. The results suggest the presence of a low-velocity anomaly extending from the surface to a depth of 25 km around the Tanlu and FeixiFaults, representing fault-related fluids caused by partial melting. The relocated earthquakes indicate a significant concentration of seismic activity above 20 km around the Tanlu and FeixiFaults, suggesting that prominent fault systems possibly serve as conduits for the upward migration of deep minerals. The proposed geodynamic model, supported by geological and geophysical data, suggests that the migration of deep mineralized materials extends along the TanluFault. The obtained results serve as a crucial foundation for elucidating the intricate process of mineralization in the central southern segment of the TanluFault, thereby enhancing comprehension regarding the interaction among ore body formation, fault fluids, localized melting, and seismic activity.
{"title":"Metallogenic environment incentral southern TanluFault revealedby P-wave tomography","authors":"Ya SUN , Zi-jun YUAN , Ji-wen HUANG , Jian-tai ZHANG , Fu-quan LI , Jian-xin LIU","doi":"10.1016/S1003-6326(25)66869-5","DOIUrl":"10.1016/S1003-6326(25)66869-5","url":null,"abstract":"<div><div>A P-wave velocity model was built in the central southern of the TanluFault based on double-difference tomography. The results suggest the presence of a low-velocity anomaly extending from the surface to a depth of 25 km around the Tanlu and FeixiFaults, representing fault-related fluids caused by partial melting. The relocated earthquakes indicate a significant concentration of seismic activity above 20 km around the Tanlu and FeixiFaults, suggesting that prominent fault systems possibly serve as conduits for the upward migration of deep minerals. The proposed geodynamic model, supported by geological and geophysical data, suggests that the migration of deep mineralized materials extends along the TanluFault. The obtained results serve as a crucial foundation for elucidating the intricate process of mineralization in the central southern segment of the TanluFault, thereby enhancing comprehension regarding the interaction among ore body formation, fault fluids, localized melting, and seismic activity.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 9","pages":"Pages 3108-3119"},"PeriodicalIF":4.7,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145248056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The microstructure and mechanical properties of 2524 Al alloy after quenching in liquid nitrogen (LN2) were investigated by TEM and compared with those of cold water quenching. The results show that the LN2 quenching process effectively induces the formation of dislocation loops. These loops become large and unevenly distribute after aging for 15 min. Furthermore, such loops become rapidly immobilized by the precipitation of coarse S phases after 1 h aging. The alloy quenched in LN2 demonstrates superior peak hardness and displays a more rapid response to subsequent aging treatments compared with the cold water-quenched one. Despite the short aging time, LN2-quenched sample achieves tensile strength of 488 MPa. This enhanced strength is attributed to the strengthening effect of numerous finely dispersed Guinier-Preston-Bagaryatsky (GPB) zones, in conjunction with the inhomogeneous formation of S phase on the dislocation loops.
{"title":"Effects of dislocation loop on microstructure and mechanical properties of LN2-quenched 2524 Al alloy","authors":"Hui YU , Li-ping TIAN , Li-wei QUAN , Chao LIU , Li-xin HUANG , Yu-ling XU , Wei YU , Bin-an JIANG , Kwang-seon SHIN","doi":"10.1016/S1003-6326(25)66850-6","DOIUrl":"10.1016/S1003-6326(25)66850-6","url":null,"abstract":"<div><div>The microstructure and mechanical properties of 2524 Al alloy after quenching in liquid nitrogen (LN<sub>2</sub>) were investigated by TEM and compared with those of cold water quenching. The results show that the LN<sub>2</sub> quenching process effectively induces the formation of dislocation loops. These loops become large and unevenly distribute after aging for 15 min. Furthermore, such loops become rapidly immobilized by the precipitation of coarse <em>S</em> phases after 1 h aging. The alloy quenched in LN<sub>2</sub> demonstrates superior peak hardness and displays a more rapid response to subsequent aging treatments compared with the cold water-quenched one. Despite the short aging time, LN<sub>2</sub>-quenched sample achieves tensile strength of 488 MPa. This enhanced strength is attributed to the strengthening effect of numerous finely dispersed Guinier-Preston-Bagaryatsky (GPB) zones, in conjunction with the inhomogeneous formation of <em>S</em> phase on the dislocation loops.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 9","pages":"Pages 2822-2829"},"PeriodicalIF":4.7,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145247851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-01DOI: 10.1016/S1003-6326(25)66871-3
Bai-qi SUN , Wei-feng LIU , Du-chao ZHANG , Lin CHEN , Xu-heng LIU , Tian-zu YANG
Based on the properties of antimony (Sb) and arsenic (As), a method was proposed to enhance gold recovery during iron matte smelting. The impact of Sb and As on gold enhancement capture was investigated using an exclusion method. The results demonstrated that both Sb and As significantly improved the gold recovery rate. As the Sb or As content increased, the gold recovery rate increased. The enhancement effect of Sb was better than that of As, and the optimal results were achieved through the synergistic effects of Sb and As. Under optimized conditions, the gold recovery rate reached 97.12%, whereas the gold content in the slag decreased to 1.70 g/t. Sb captured and aggregated free gold as an Au-Sb alloy, whereas As-Fe alloy also captured free gold. The growth of the gold-captured phase size enhanced the settling velocity, thereby promoting gold recovery.
{"title":"Effect of antimony and arsenic on gold enhancement capture during iron matte smelting of refractory gold concentrate by exclusion method","authors":"Bai-qi SUN , Wei-feng LIU , Du-chao ZHANG , Lin CHEN , Xu-heng LIU , Tian-zu YANG","doi":"10.1016/S1003-6326(25)66871-3","DOIUrl":"10.1016/S1003-6326(25)66871-3","url":null,"abstract":"<div><div>Based on the properties of antimony (Sb) and arsenic (As), a method was proposed to enhance gold recovery during iron matte smelting. The impact of Sb and As on gold enhancement capture was investigated using an exclusion method. The results demonstrated that both Sb and As significantly improved the gold recovery rate. As the Sb or As content increased, the gold recovery rate increased. The enhancement effect of Sb was better than that of As, and the optimal results were achieved through the synergistic effects of Sb and As. Under optimized conditions, the gold recovery rate reached 97.12%, whereas the gold content in the slag decreased to 1.70 g/t. Sb captured and aggregated free gold as an Au-Sb alloy, whereas As-Fe alloy also captured free gold. The growth of the gold-captured phase size enhanced the settling velocity, thereby promoting gold recovery.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 9","pages":"Pages 3134-3146"},"PeriodicalIF":4.7,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145247847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-01DOI: 10.1016/S1003-6326(25)66872-5
Jian PANG , Chao-wei DONG , Bao-qiang XU , Ling-xin KONG , Bin YANG
The vacuum volatilization kinetics of Pb in In-Pb solder was investigated. The results indicate a significant increase in the vacuum volatilization rates of Pb, 25In-75Pb, 40In-60Pb, and In with increasing temperaturesfrom 923 to 1123 K, system pressure of 3 Pa and holding time of 30 min. The masstransfer coefficients and apparent activation energies of Pb and its alloys were determined at various temperatures. Additionally, a kinetics model was developed to describe Pb vacuum volatilization in high-temperature melts. It is obtained that the vapor mass transfer is the factor limiting the vacuum volatilization rates of Pb and In–Pb alloys under the above specified conditions.
{"title":"Kinetics study on separation and recovery of In-Pb solder by vacuum volatilization","authors":"Jian PANG , Chao-wei DONG , Bao-qiang XU , Ling-xin KONG , Bin YANG","doi":"10.1016/S1003-6326(25)66872-5","DOIUrl":"10.1016/S1003-6326(25)66872-5","url":null,"abstract":"<div><div>The vacuum volatilization kinetics of Pb in In-Pb solder was investigated. The results indicate a significant increase in the vacuum volatilization rates of Pb, 25In-75Pb, 40In-60Pb, and In with increasing temperaturesfrom 923 to 1123 K, system pressure of 3 Pa and holding time of 30 min. The masstransfer coefficients and apparent activation energies of Pb and its alloys were determined at various temperatures. Additionally, a kinetics model was developed to describe Pb vacuum volatilization in high-temperature melts. It is obtained that the vapor mass transfer is the factor limiting the vacuum volatilization rates of Pb and In–Pb alloys under the above specified conditions.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 9","pages":"Pages 3147-3160"},"PeriodicalIF":4.7,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145247848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-01DOI: 10.1016/S1003-6326(25)66856-7
Ming-bing LI , Kai WANG , Bin WANG , Chao LV , Xin-nan WANG , Xing LI , Zhi-shou ZHU , Hui-long HOU , Xin-qing ZHAO
The angular deviations and influential factors of Burgers orientation relationship (BOR) in Ti-6Al-4V and Ti-6.5Al-2Zr-1Mo-1V alloys were investigated by optical microscope (OM), scanning electron microscope (SEM), electron backscattered diffraction (EBSD) and high-angle annular dark-field scanning transmission electron microscope (HAADF-STEM). A spherical center angle model was introduced to calculate the angular deviations from the ideal BOR between α and β phases. The results indicate that α and β phases in α colonies of both alloys do not follow the perfect BOR during β→α phase transformation, with angular deviation values less than 3°. Through detailed microstructure characterization, the broad face of α/β interfaces viewed along two different electron incident directions shows the atomic-scale terrace-ledge structure, and many dislocations are observed within α and β phases and near α/β interfaces. Further studies reveal that the angular deviations mainly originate from lattice distortions caused by dislocations in α and β phases and lattice mismatches at α/β interfaces.
{"title":"Angular deviations and influential factors of Burgers orientation relationship during β→αphase transformation in titanium alloys","authors":"Ming-bing LI , Kai WANG , Bin WANG , Chao LV , Xin-nan WANG , Xing LI , Zhi-shou ZHU , Hui-long HOU , Xin-qing ZHAO","doi":"10.1016/S1003-6326(25)66856-7","DOIUrl":"10.1016/S1003-6326(25)66856-7","url":null,"abstract":"<div><div>The angular deviations and influential factors of Burgers orientation relationship (BOR) in Ti-6Al-4V and Ti-6.5Al-2Zr-1Mo-1V alloys were investigated by optical microscope (OM), scanning electron microscope (SEM), electron backscattered diffraction (EBSD) and high-angle annular dark-field scanning transmission electron microscope (HAADF-STEM). A spherical center angle model was introduced to calculate the angular deviations from the ideal BOR between <em>α</em> and <em>β</em> phases. The results indicate that <em>α</em> and <em>β</em> phases in <em>α</em> colonies of both alloys do not follow the perfect BOR during <em>β</em>→<em>α</em> phase transformation, with angular deviation values less than 3°. Through detailed microstructure characterization, the broad face of <em>α</em>/<em>β</em> interfaces viewed along two different electron incident directions shows the atomic-scale terrace-ledge structure, and many dislocations are observed within <em>α</em> and <em>β</em> phases and near <em>α</em>/<em>β</em> interfaces. Further studies reveal that the angular deviations mainly originate from lattice distortions caused by dislocations in <em>α</em> and <em>β</em> phases and lattice mismatches at <em>α</em>/<em>β</em> interfaces.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 9","pages":"Pages 2903-2917"},"PeriodicalIF":4.7,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145247857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-01DOI: 10.1016/S1003-6326(25)66851-8
Hao GU , Shuai-guang JIA , Zhi-de LI , Hai-tao GAO , Zheng-yu WANG , Charlie KONG , Hai-liang YU
The service performance of Al alloy sheets can be improved by controlling the rolling temperature. In this study, the corrosion resistance of Al-Mg-Mn-Sc alloy sheets was enhanced through cryorolling (CR). The corrosion resistance of the CR samples with 50% rolling reduction was superior to that of the room-temperature rolled (RTR) samples. After the sensitization treatment (ST), the maximum intergranular corrosion (IGC) depth for the CR samples was 35.2 µm, while it was 53.9 µm for the RTR samples. Similarly, the mass losses were 56.89 and 73.11 mg/cm2 for the CR and RTR samples after ST, respectively. In addition, the impedance modulus of the CR sample was more than twice that of the RTR sample. Superior pitting resistance can be attributed to the thicker passivation film and the Al6(Mn,Fe) phases being broken and interspersed in CR samples. Furthermore, the sub-grains, shear bands, dispersive Al3(Sc,Zr) phases, fewer high-angle grain boundaries and high-density dislocations in the CR samples impeded the continuous precipitation of the β (Al3Mg2) phase along grain boundaries while promoting its formation inside grains instead. These microscopic characteristics significantly reduced the electrical coupling effect between β phase and the Al matrix, leading to a considerable decrease in IGC occurrence.
{"title":"Role of cryorolling in enhancing corrosion resistance of Al-Mg-Mn-Sc alloy sheets","authors":"Hao GU , Shuai-guang JIA , Zhi-de LI , Hai-tao GAO , Zheng-yu WANG , Charlie KONG , Hai-liang YU","doi":"10.1016/S1003-6326(25)66851-8","DOIUrl":"10.1016/S1003-6326(25)66851-8","url":null,"abstract":"<div><div>The service performance of Al alloy sheets can be improved by controlling the rolling temperature. In this study, the corrosion resistance of Al-Mg-Mn-Sc alloy sheets was enhanced through cryorolling (CR). The corrosion resistance of the CR samples with 50% rolling reduction was superior to that of the room-temperature rolled (RTR) samples. After the sensitization treatment (ST), the maximum intergranular corrosion (IGC) depth for the CR samples was 35.2 µm, while it was 53.9 µm for the RTR samples. Similarly, the mass losses were 56.89 and 73.11 mg/cm<sup>2</sup> for the CR and RTR samples after ST, respectively. In addition, the impedance modulus of the CR sample was more than twice that of the RTR sample. Superior pitting resistance can be attributed to the thicker passivation film and the Al<sub>6</sub>(Mn,Fe) phases being broken and interspersed in CR samples. Furthermore, the sub-grains, shear bands, dispersive Al<sub>3</sub>(Sc,Zr) phases, fewer high-angle grain boundaries and high-density dislocations in the CR samples impeded the continuous precipitation of the <em>β</em> (Al<sub>3</sub>Mg<sub>2</sub>) phase along grain boundaries while promoting its formation inside grains instead. These microscopic characteristics significantly reduced the electrical coupling effect between <em>β</em> phase and the Al matrix, leading to a considerable decrease in IGC occurrence.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 9","pages":"Pages 2830-2845"},"PeriodicalIF":4.7,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145247852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-01DOI: 10.1016/S1003-6326(25)66865-8
Zong-bo LI , Yan FENG , Ze-hang ZHUANG , Xiang PENG , Ri-chu WANG
Elements (As, Bi) and (Cu, Fe) exhibiting two typical segregation behavior in liquid Sb alloys were selected as solute atoms for analysis. Ab initio molecular dynamics (AIMD) simulations were employed to study the molten Sb alloy at different temperatures. By analyzing its pair correlation function (PCF), bond pairs, bond angle distribution function (BADF), and Voronoi polyhedron (VP), the short-range order (SRO) of the alloy was investigated. In the Sb melt, the solute atoms Cu and Fe, which have smaller distribution coefficients, exhibit a stronger affinity for Sb than the solute atoms As and Bi, which have larger distribution coefficients. The BADF of As and Bi with larger distribution coefficients shows a lower probability of small-angle peaks compared to large-angle peaks, whereas the BADF of Cu and Fe with smaller distribution coefficients exhibits the opposite trend. The BADF reveals that Sb-As and Sb-Bi approachpure Sb melt, while Sb-Cu and Sb-Fe deviate significantly. Compared to Sb-Cu and Sb-Fe, the Sb-As and Sb-Bi systems exhibit more low-index bonds, suggesting weaker interactions and more disorder. The VP fractions around As and Bi atoms are lower than those around Cu and Fe, and the VP face distributions around As and Bi are more complex. There are differences in the VP around different solute atoms, primarily due to the varying bond pair fractions associated with each solute atom. Fe has the smallest diffusion coefficient, primarily due to its compact local structure.
{"title":"AIMD study on correlation between chemical effects and segregation behavior in liquid Sb-based alloy","authors":"Zong-bo LI , Yan FENG , Ze-hang ZHUANG , Xiang PENG , Ri-chu WANG","doi":"10.1016/S1003-6326(25)66865-8","DOIUrl":"10.1016/S1003-6326(25)66865-8","url":null,"abstract":"<div><div>Elements (As, Bi) and (Cu, Fe) exhibiting two typical segregation behavior in liquid Sb alloys were selected as solute atoms for analysis. Ab initio molecular dynamics (AIMD) simulations were employed to study the molten Sb alloy at different temperatures. By analyzing its pair correlation function (PCF), bond pairs, bond angle distribution function (BADF), and Voronoi polyhedron (VP), the short-range order (SRO) of the alloy was investigated. In the Sb melt, the solute atoms Cu and Fe, which have smaller distribution coefficients, exhibit a stronger affinity for Sb than the solute atoms As and Bi, which have larger distribution coefficients. The BADF of As and Bi with larger distribution coefficients shows a lower probability of small-angle peaks compared to large-angle peaks, whereas the BADF of Cu and Fe with smaller distribution coefficients exhibits the opposite trend. The BADF reveals that Sb-As and Sb-Bi approachpure Sb melt, while Sb-Cu and Sb-Fe deviate significantly. Compared to Sb-Cu and Sb-Fe, the Sb-As and Sb-Bi systems exhibit more low-index bonds, suggesting weaker interactions and more disorder. The VP fractions around As and Bi atoms are lower than those around Cu and Fe, and the VP face distributions around As and Bi are more complex. There are differences in the VP around different solute atoms, primarily due to the varying bond pair fractions associated with each solute atom. Fe has the smallest diffusion coefficient, primarily due to its compact local structure.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 9","pages":"Pages 3043-3056"},"PeriodicalIF":4.7,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145247875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-01DOI: 10.1016/S1003-6326(25)66868-3
Tao-tao LI , Jin-peng QU , Lu-lu ZHAO , Peng-fei WANG , Jun-hong ZHANG , Ting-feng YI
To explore high-performance cathode materials for aqueous ammonium ion batteries (AAIBs), vanadium-based Prussian blue analogue composites (VFe-PBAs) were prepared by hydrothermal coprecipitation method to enhance the reversible storage of NH4+. Benefiting from the stable three-dimensional structure and spacious gap position, VFe-PBAs-2 cathode displays excellent electrochemical activity and rate performance, achieving a high specific capacity of 84.3 mA·h/g at a current density of 1000 mA/g. In addition, VFe-PBAs-2 cathode also shows impressive long-term cycle durabilitywith 85.2% capacity retention after 3×104 cycles at 5000 mA/g. The synthesized cathode materials combined with the high electrochemical activity of vanadium ions significantly promote the rapid transfer of NH4+. Furthermore, NH4+embedding/extraction mechanism of VFe-PBAs-2 cathode was revealed by electrochemical kinetics tests and advanced ex-situ characterizations. The experimental results demonstrate that vanadium-modified VFe-PBAs-2 as a cathode material can remarkably improve the capacity, electrochemical activity and cycling stability of AAIBs to achieve high performance NH4+ storage.
{"title":"Preparation, electrochemical properties and energy storage mechanism of vanadium-based Prussian blue analogues as cathode materials for aqueous ammonium ion batteries","authors":"Tao-tao LI , Jin-peng QU , Lu-lu ZHAO , Peng-fei WANG , Jun-hong ZHANG , Ting-feng YI","doi":"10.1016/S1003-6326(25)66868-3","DOIUrl":"10.1016/S1003-6326(25)66868-3","url":null,"abstract":"<div><div>To explore high-performance cathode materials for aqueous ammonium ion batteries (AAIBs), vanadium-based Prussian blue analogue composites (VFe-PBAs) were prepared by hydrothermal coprecipitation method to enhance the reversible storage of NH<sub>4</sub><sup>+</sup>. Benefiting from the stable three-dimensional structure and spacious gap position, VFe-PBAs-2 cathode displays excellent electrochemical activity and rate performance, achieving a high specific capacity of 84.3 mA·h/g at a current density of 1000 mA/g. In addition, VFe-PBAs-2 cathode also shows impressive long-term cycle durabilitywith 85.2% capacity retention after 3×10<sup>4</sup> cycles at 5000 mA/g. The synthesized cathode materials combined with the high electrochemical activity of vanadium ions significantly promote the rapid transfer of NH<sub>4</sub><sup>+</sup>. Furthermore, NH<sub>4</sub><sup>+</sup>embedding/extraction mechanism of VFe-PBAs-2 cathode was revealed by electrochemical kinetics tests and advanced ex-situ characterizations. The experimental results demonstrate that vanadium-modified VFe-PBAs-2 as a cathode material can remarkably improve the capacity, electrochemical activity and cycling stability of AAIBs to achieve high performance NH<sub>4</sub><sup>+</sup> storage.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 9","pages":"Pages 3093-3107"},"PeriodicalIF":4.7,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145248055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-01DOI: 10.1016/S1003-6326(25)66857-9
Ji-fei HU , Peng QI , Wu WEI , Bo-long LI , Tong-bo WANG , Jia-ming YIN , Zuo-ren NIE
A heterogeneous structure composed of elongated primary α and secondary α grains with a size of 670 nm was produced by subjecting the bimodal microstructure of a titanium alloy to hot rolling, annealing, and aging treatments. This heterogeneous structure exhibited significantly improved strength owing to a combination of heterogeneous deformation-induced strengthening and dislocation strengthening. A short-duration high-temperature heat treatment facilitated a synergistic enhancement of yield strength and elongation at both room temperature and 650 °C. The fracture elongation at room temperature and 650 °C increased by 36.7% and 130.4%, respectively, compared withthat of bimodal microstructure. The stacking of geometrically necessary dislocations with a single slip system at the phase boundary and the longer effective slip length of the dislocations are the reasons for the significant improvement in elongation. The elongated primary α phase in lamellar bimodal microstructure, composed of multiple primary α grains, has better resistance to the anti-fatigue crack initiation effect.
{"title":"Structural characteristics, tensile properties and room-temperaturehigh-cycle fatigue properties of heterogeneous structure in near-α titanium alloys","authors":"Ji-fei HU , Peng QI , Wu WEI , Bo-long LI , Tong-bo WANG , Jia-ming YIN , Zuo-ren NIE","doi":"10.1016/S1003-6326(25)66857-9","DOIUrl":"10.1016/S1003-6326(25)66857-9","url":null,"abstract":"<div><div>A heterogeneous structure composed of elongated primary <em>α</em> and secondary <em>α</em> grains with a size of 670 nm was produced by subjecting the bimodal microstructure of a titanium alloy to hot rolling, annealing, and aging treatments. This heterogeneous structure exhibited significantly improved strength owing to a combination of heterogeneous deformation-induced strengthening and dislocation strengthening. A short-duration high-temperature heat treatment facilitated a synergistic enhancement of yield strength and elongation at both room temperature and 650 °C. The fracture elongation at room temperature and 650 °C increased by 36.7% and 130.4%, respectively, compared withthat of bimodal microstructure. The stacking of geometrically necessary dislocations with a single slip system at the phase boundary and the longer effective slip length of the dislocations are the reasons for the significant improvement in elongation. The elongated primary <em>α</em> phase in lamellar bimodal microstructure, composed of multiple primary <em>α</em> grains, has better resistance to the anti-fatigue crack initiation effect.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"35 9","pages":"Pages 2918-2934"},"PeriodicalIF":4.7,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145247858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
扫码关注我们
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号