JOM最新文献

{"title":"Dissolution and Precipitation Behavior of the γ′ Phase During Heat Treatment of the Nickel-Based High-Temperature Alloy K444","authors":"Hao Huang,&nbsp;Yao Huang,&nbsp;Hexin Zhang","doi":"10.1007/s11837-025-07573-y","DOIUrl":"10.1007/s11837-025-07573-y","url":null,"abstract":"<div><p>The morphology, volume fraction, and size distribution of the <i>γ</i>′ phase significantly influence the fabrication of high-temperature alloys and their performance under severe service conditions. This study systematically investigates the dissolution, precipitation, and growth behavior of various <i>γ</i>′ phases during heat treatment. The results demonstrate that the <i>γ</i>/<i>γ</i>′ eutectic structure between dendrites decomposes first during the solution treatment, forming coarsened <i>γ</i>′ agglomerates, which subsequently dissolve into the <i>γ</i> matrix. The splitting and dissolution mechanism of the coarsened primary <i>γ</i>′ phase within the <i>γ</i>′ agglomerate regions is clarified. Increasing the solution temperature and prolonging the solution time enhance the growth of secondary <i>γ</i>′ phases by accelerating the splitting and dissolution of the <i>γ</i>/<i>γ</i>″ eutectic structure. During heat treatment, carbide segregation at grain boundaries induces <i>γ</i>′ coarsening at these boundaries. The combined effects of carbides with varying sizes, the coarsened <i>γ</i>′ precipitates at grain boundaries, and the pinning effect of precipitates on local grain boundaries lead to the formation of serrated grain boundary morphologies. These findings enhance the understanding of the evolution of <i>γ</i>′ phases in nickel-based superalloys during heat treatment and provide a theoretical basis for optimizing the heat treatment processes of the K444 alloy.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 10","pages":"7655 - 7667"},"PeriodicalIF":2.3,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145079045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"TMS Welcomes New Members to Graduate Student Program in June","authors":"","doi":"10.1007/s11837-025-07593-8","DOIUrl":"10.1007/s11837-025-07593-8","url":null,"abstract":"","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 8","pages":"5798 - 5801"},"PeriodicalIF":2.3,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145165877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of Ultrasonic Recovery of Platinum Chloride Solution Using the Ion Exchange Method","authors":"Siliang Yan,&nbsp;Wen Liu,&nbsp;Quan Yang,&nbsp;Yong Li,&nbsp;Xilong Wu,&nbsp;Hongying Xia,&nbsp;Linqing Dai,&nbsp;Libo Zhang","doi":"10.1007/s11837-025-07550-5","DOIUrl":"10.1007/s11837-025-07550-5","url":null,"abstract":"<div><p>In light of the challenge associated with recovering platinum from platinum-containing waste using ion exchange techniques, there is a need to enhance the process of platinum adsorption. To address this, the ultrasonic strengthening method has been employed to improve the adsorption efficiency. Through the application of ultrasound, various resins were utilized to extract platinum metal from platinum-containing chloride leaching solution, with the identification of the most effective resin. The resin underwent characterization using diverse methods, and the adsorption mechanism was scrutinized. Findings indicated that the optimal ultrasonic power level was 240 W. In comparison to the traditional 12-h adsorption saturation period, dynamic equilibrium could be achieved within 3 h under ultrasonic conditions, with a maximum static adsorption saturation of 30.62 mg/g. The most favorable pH value was determined to be 1. The adsorption process of platinum on the resin was accurately described by the pseudo-second-order kinetic model. The 717 resins exhibited notable selectivity and reusability, maintaining an adsorption rate above 91.24% even after 5 regeneration cycles. In conclusion, ultrasound as a reinforcement method offers a viable approach for the practical recovery of precious metals.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 10","pages":"7376 - 7387"},"PeriodicalIF":2.3,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145079046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"JOM: The Journal 2026-2027 Editorial Calendar Is Open for Submissions","authors":"Kelly Markel","doi":"10.1007/s11837-025-07591-w","DOIUrl":"10.1007/s11837-025-07591-w","url":null,"abstract":"","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 8","pages":"5793 - 5794"},"PeriodicalIF":2.3,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145165875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation on the Consolidation Characteristics and Metallurgical Performances of Oxidized Pellets with Different Alumina Occurrence","authors":"Jian Hou,&nbsp;Jianbo Zhao,&nbsp;Xinnan Zhao,&nbsp;Yuxiao Xue,&nbsp;Zhixiong You,&nbsp;Shengfu Zhang","doi":"10.1007/s11837-025-07566-x","DOIUrl":"10.1007/s11837-025-07566-x","url":null,"abstract":"<div><p>With the increasing consumption of high-grade magnetite concentrates, the contents of gangue minerals in concentrates are increasing, especially Al₂O₃. In this paper, four types of Al-containing additives, kaolinite, illite, gibbsite, and corundum, were adopted and the influence of alumina occurrence on the consolidation characteristics and metallurgical performance of oxidized pellets was revealed. Kaolinite is more beneficial for the properties of green pellets, followed by illite, gibbsite, and corundum in that order, which is mainly due to the different morphology characteristics of Al-containing additives. The adverse effect of Al₂O₃ on the recrystallization of Fe₂O₃ can be inhibited by the addition of kaolinite or illite due to the more formation of a liquid phase during roasting, especially the former. When alumina is in the form of different occurrence states, the pore structure and mineral compositions of fired pellets are also different, which leads to differences in metallurgical performance. Overall, kaolinite is the most ideal alumina occurrence state for the pelletizing process of magnetite concentrates, followed by illite, gibbsite, and corundum in that order. When the Al₂O₃ content rises to 2.0%, the compressive strength of fired pellets exceeds 3250 N Per⁻¹ with kaolinite or illite added, while it is below 3000 N Per⁻¹ with corundum or gibbsite added.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 9","pages":"6428 - 6442"},"PeriodicalIF":2.3,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144897113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"TMS Welcomes New Members in March and June 2025","authors":"","doi":"10.1007/s11837-025-07594-7","DOIUrl":"10.1007/s11837-025-07594-7","url":null,"abstract":"","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 8","pages":"5802 - 5827"},"PeriodicalIF":2.3,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145165878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 Interfacial Structure on Properties of Nickel–Iron Alloys from Red Mud","authors":"Guoling Zhang,&nbsp;Wei Wang","doi":"10.1007/s11837-025-07577-8","DOIUrl":"10.1007/s11837-025-07577-8","url":null,"abstract":"<div><p>To understand the effect of the interfacial structure between chromium carbide and the matrix on the properties of nickel–iron alloys from red mud, first-principles density functional theory calculations were conducted. The plane-wave pseudopotential method in the CASTEP software package was used to select the atomic layer numbers and to calculate the surface energies of the FeNi₃ nickel–iron alloy and chromium carbide in the [001] direction, as well as the density of states, differential charge, bonding mode, and tensile properties near the FeNi₃(001)/Cr₃C₂(001) interface. Moreover, the maximum interfacial adhesion energy of the Fe–Ni-terminated interface is 0.478 J/m², the minimum interface spacing is 2.8 Å, and this interface is the most stable. In addition, during a first-principles tensile simulation, the stress reached a maximum value at 12% strain owing to the disruption of the atomic bonds near the interface, and then the stress showed a significant downward trend, indicating that the interface deformation reached the limit and mechanical fracture occurred. This work will aid in the understanding of the strengthening mechanism of nickel–iron alloys from red mud.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 9","pages":"6415 - 6427"},"PeriodicalIF":2.3,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144897112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comprehensive Computational Assessment of Al-Based High-Entropy Superalloys: Thermodynamic, Mechanical, and Radiation Shielding Characterization for Nuclear Applications","authors":"Ghada ALMisned,&nbsp;Ömer Güler,&nbsp;İskender Özkul,&nbsp;Duygu Sen Baykal,&nbsp;Hessa Alkarrani,&nbsp;G. Kilic,&nbsp;A. Mesbahi,&nbsp;H. O. Tekin","doi":"10.1007/s11837-025-07578-7","DOIUrl":"10.1007/s11837-025-07578-7","url":null,"abstract":"<div><p>This study investigates the radiation shielding properties of aluminum-based superalloy high-entropy alloys (HEAs) for potential use in advanced nuclear reactor applications. These HEAs, composed of five or more metals in equimolar or near-equimolar ratios, were evaluated for their thermodynamic stability, mechanical strength, and radiation attenuation capabilities. Key parameters such as entropy of mixing (ΔS_mix), enthalpy of mixing (ΔH_mix), valence electron concentration (VEC), and atomic size difference (<i>δ</i>) were analyzed. Radiation shielding properties, including mass attenuation coefficients (MAC), half-value layer (HVL), effective atomic number (Z_eff), and exposure buildup factor (EBF), were assessed using various simulations. Alloy 12, with its superior MAC, lowest HVL, and high Σ_R value, demonstrated exceptional effectiveness in gamma and neutron attenuation. These findings underscore the potential of aluminum-based HEAs, particularly Alloy 12, to enhance the operational capabilities and longevity of nuclear reactors, paving the way for the development of next-generation materials for high-radiation environments.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 10","pages":"7592 - 7609"},"PeriodicalIF":2.3,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145079003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"TMS Technical Divisions Plan Honorary Symposia for 2026","authors":"Kelly Zappas","doi":"10.1007/s11837-025-07592-9","DOIUrl":"10.1007/s11837-025-07592-9","url":null,"abstract":"","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 8","pages":"5795 - 5797"},"PeriodicalIF":2.3,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145165876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on the Influence of TiO2 on the Viscosity and Fluidity of Ash Slag of Highly Acidic Coke at High Temperature","authors":"Fan Yang,&nbsp;Qingguo Xue,&nbsp;Binbin Lvy,&nbsp;Haibin Zuo,&nbsp;Jingsong Wang","doi":"10.1007/s11837-025-07560-3","DOIUrl":"10.1007/s11837-025-07560-3","url":null,"abstract":"<div><p>The mobility characteristics of molten ash within coke matrices during blast furnace operations substantially influence coke quality parameters, rendering comprehensive investigation of this phenomenon critical for process optimisation in ferrous metallurgy. Although prior studies have demonstrated that TiO₂ reduces polymerization in basic slags, its role in governing the structural evolution of highly acidic, coke-derived molten ash remains poorly understood. Since coke ash typically exhibits characteristics of highly acidic slag systems, this study focuses on the SiO₂-Al₂O₃-CaO-TiO₂ quaternary system. Through integrated molecular dynamics simulations and experimental investigations, we systematically examine TiO₂’s influence on the structural evolution of molten ash and quantitatively assess its effects on viscosity and flow behaviour. The findings reveal that [SiO₄] and [AlO₄] tetrahedra constitute the fundamental structural units within molten ash. As TiO₂ content decreases, the population of [TiO_m] polyhedral structures diminishes, leading to a progressive simplification of the interconnected network. This structural modification correlates with reduced slag viscosity and enhanced fluidity. Furthermore, synergistic diffusion between Ti and Si atoms in the slag matrix demonstrates pronounced sensitivity to TiO₂ concentration. At 2 wt.% TiO₂, Ti exhibits greater diffusivity than Si. Viscosity reduction with decreasing TiO₂ content coincides with a decline in bridging oxygen species and an increase in non-bridging oxygen populations, indicative of molecular depolymerisation from large clusters to smaller fragments—a phenomenon corroborated by FTIR spectral analysis. These structural alterations suggest that elevated TiO₂ content enhances slag viscosity while concurrently improving coke mechanical strength through modified ash-phase interactions. We address this gap by revealing that TiO₂ modifies network connectivity differently in acidic environments, reducing polymerization by forming [TiO_m] polyhedra that disrupt Si-O-Al linkages. These findings highlight the compositional dependency of TiO₂’s structural effects, providing novel insights into optimizing coke performance in blast furnaces.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 9","pages":"6768 - 6780"},"PeriodicalIF":2.3,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144897072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}