JOM最新文献

{"title":"Carbon Thermal Reduction of Nickel Laterite Leaching Slag for Efficient Enrichment and Retrieval Efficiency of Iron","authors":"Tingshuai Li,&nbsp;Yusheng Wu,&nbsp;Yuzheng Wang,&nbsp;Feng Liu,&nbsp;Laishi Li","doi":"10.1007/s11837-025-07483-z","DOIUrl":"10.1007/s11837-025-07483-z","url":null,"abstract":"<div><p>As a representative solid waste in the domain of the nickel laterite ore industry, the resource utilization of nickel laterite leaching slag is always a difficult problem for the metallurgical industry. In this paper, the method of non-molten roasting reduction magnetic separation with anthracite as the reducing agent was investigated to enrich and recover iron from nickel laterite ore leaching slag. The reduction mechanism of the process was analyzed by thermodynamic calculations and equilibrium simulations of the physical phase. The effects of roasting temperature, holding time, and anthracite dosage on the conversion rate of iron-bearing minerals were studied. The response surface has been used to analyze the interaction of influencing factors. The optimum reduction conditions were: roasting temperature of 1320 °C, duration of 60 min, and reductant dosage of 25 wt.%. The iron purity and retrieval efficiency in the concentrate were 76.08% and 95.19%, respectively. The physical phase composition, microstructure, and magnetization intensity of the reduction products were studied by XRD, SEM-EDS, and VSM. The reduction mechanism of reactants and the aggregation process of products were studied.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 8","pages":"5972 - 5983"},"PeriodicalIF":2.3,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164990","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 Member News","authors":"","doi":"10.1007/s11837-025-07520-x","DOIUrl":"10.1007/s11837-025-07520-x","url":null,"abstract":"","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 7","pages":"4896 - 4899"},"PeriodicalIF":2.3,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145163983","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":"Effect of Heat Treatment on the Microstructure and Properties of Ni51.3Ti Shape Memory Alloy by Wire Arc Additive Manufacturing","authors":"Qing Yang,&nbsp;Junyi Ma,&nbsp;Jie Liu,&nbsp;Lei Yang,&nbsp;Chao Cai","doi":"10.1007/s11837-025-07455-3","DOIUrl":"10.1007/s11837-025-07455-3","url":null,"abstract":"<div><p>Wire arc additive manufacturing (WAAM) technology is widely used in the fabrication of large-size NiTi shape memory alloy components because of its simplicity and high deposition efficiency. However, WAAM induces anisotropy along the height direction of the components, which greatly affects the material’s stability. To address this issue, post-heat treatment processes can be employed to enhance microstructural uniformity and mechanical properties. This paper investigates the effects of different solution treatments and solution treatment combined with short-time aging treatment on the microstructure, phase transformation, and mechanical properties of 15-layer arc additively manufactured Ni_51.3Ti alloy. The results indicate that after solution treatment and short-time aging treatment, there is no significant change in the grain size of the NiTi samples on the X-Y plane, and the samples still exhibit a preferred [001] crystallographic orientation. During aging at 45°C, the precipitation of the Ni₄Ti₃ phase causes the B2 → B19′ transformation to change to B2 → R → B19′ transformation. Heat treatment makes the microstructure of the NiTi alloy more uniform, effectively improving the cyclic tensile properties of samples in the 0° direction and increasing the strain recovery rate of the material to over 95%. This study provides an effective heat treatment method for arc additively manufactured Ni_51.3Ti alloy.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 8","pages":"6191 - 6207"},"PeriodicalIF":2.3,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145163871","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":"Obtaining of Spherical Intermetallic Alloy Cr-Ta-W Powder for Usage in Laser Powder Bed Fusion Additive Manufacturing with High-Temperature Platform Heating","authors":"Nikolai Ozerskoi,&nbsp;Nikolai Razumov,&nbsp;Alexey Silin,&nbsp;Igor Polozov,&nbsp;Maxim Gusakov,&nbsp;Aleksandr Beresnev,&nbsp;Anatoly Popovich","doi":"10.1007/s11837-025-07476-y","DOIUrl":"10.1007/s11837-025-07476-y","url":null,"abstract":"<div><p>This paper presents the results of research into the possibility of obtaining a spherical powder of a promising heat-resistant alloy with intermetallic hardening based on the Cr-Ta-W system for subsequent application in selective laser melting (SLM) technology. This research addresses the critical challenge of producing crack-free, high-density components from brittle intermetallic alloys through laser powder bed fusion (LPBF), which is achieved by developing a novel combination of powder processing techniques and high-temperature platform heating. The study has successfully addressed the inherent brittleness and processing challenges of Cr-Ta-W alloys, which have previously limited their manufacturability. The alloy was obtained through a series of methods, including mechanical alloying, granulation, and plasma spheroidization. The obtained powders were found to possess all the necessary technological properties for use in the SLM process. In order to ascertain the most effective method of compaction by the SLM method, a series of iterative constructions were carried out at different stages. It is demonstrated that the formation of a compact material from Cr-Ta-W alloy powder without the presence of visible defects and without the disruption of their geometry is only possible when utilizing platform heating to a temperature of at least 800°C. Samples obtained from the alloy with intermetallic strengthening on the basis of the Cr-Ta-W system exhibited high mechanical characteristics at elevated temperatures (1150°C). These included a yield strength of σ_0,2 ≥ 700 MPa and a tensile strength of σ_B ≥ 900 MPa.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 10","pages":"7177 - 7190"},"PeriodicalIF":2.3,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145078867","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":"Membrane Percrystallization for Production of Lithium Salt and Basic Compounds","authors":"Yiquan Deng,&nbsp;Tony Howes,&nbsp;James Vaughan","doi":"10.1007/s11837-025-07464-2","DOIUrl":"10.1007/s11837-025-07464-2","url":null,"abstract":"<div><p>Membrane percrystallization is an emerging and productive crystallization technology. In this research, experiments using sugar-derived carbon membranes demonstrate the production of lithium hydroxide, carbonate, chloride, sulfate and acetate, from feed solutions with concentrations ranging from 1 to 20 wt.% (weight solute/weight solution). Sugar-derived carbon membranes were coated on a porous alumina substrate via vacuum impregnation and pyrolysis resulting in a tailorable porosity and homogenous membrane which was chemically robust over a wide range of solution chemistries. The highest flux was for 20 wt.% lithium chloride solution, equivalent to an annual salt production rate of 70 t for 1 m² of membrane. The percrystallizer productivity was 54 times higher than evaporative crystallization, shown by comparing the membrane surface area to the exposed surface area of a stirred solution–vacuum interface of an evaporative crystallizer at equivalent conditions of initial solution composition, temperature, and vacuum. The percrystallized solids were characterized in terms of their microstructures, crystal structure, and chemical compositions via scanning electron microscopy, x-ray diffraction, and thermogravimetric analysis, providing the first information of this type for lithium salts and basic compounds produced using this new technology.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 11","pages":"8272 - 8284"},"PeriodicalIF":2.3,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11837-025-07464-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145327564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Travels with TMS Scholars","authors":"Kelly Zappas","doi":"10.1007/s11837-025-07522-9","DOIUrl":"10.1007/s11837-025-07522-9","url":null,"abstract":"","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 7","pages":"4907 - 4908"},"PeriodicalIF":2.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161301","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":"Superalloy 718 & Derivatives Finds New Home at MS&T26","authors":"Megan Enright","doi":"10.1007/s11837-025-07525-6","DOIUrl":"10.1007/s11837-025-07525-6","url":null,"abstract":"","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 7","pages":"4913 - 4913"},"PeriodicalIF":2.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161302","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 Technical Topics","authors":"","doi":"10.1007/s11837-025-07519-4","DOIUrl":"10.1007/s11837-025-07519-4","url":null,"abstract":"","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 7","pages":"4894 - 4895"},"PeriodicalIF":2.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161300","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":"Prediction of Tandem Cold-Rolled Strip Flatness Based on the BiGRU-Attention-iTransformer Model","authors":"Ming-hua Liu,&nbsp;Ya-han Li,&nbsp;Da-yuan Wu,&nbsp;Zi-xuan Zhu","doi":"10.1007/s11837-025-07456-2","DOIUrl":"10.1007/s11837-025-07456-2","url":null,"abstract":"<div><p>Cold rolling strip production is a multi-stand continuous rolling process, so flatness prediction is a typical spatiotemporal series data prediction problem, which requires considering various complex factors affecting flatness and paying attention to the correlation of its spatiotemporal dimensions. Based on this, a cold rolled strip flatness prediction model is proposed, integrating a Bidirectional Gated Recurrent Unit (BiGRU), an Attention mechanism, and an Inverted Transformer (iTransformer). The model adopts a parallel structure, where one branch utilizes a BiGRU-Attention module designed to capture the spatiotemporal correlations in strip production data, with the BiGRU’s hidden layer dimension set to 128; the other branch employs an iTransformer module with a feature dimension of 256 and 8 attention heads to effectively extract key features and model the relationships between parameters using the self-attention mechanism. The features extracted from both branches are fused into a 128-dimensional vector, which is then passed through a fully connected layer for flatness prediction. The prediction results show that the error indicators MSE, RMSE and MAE of the proposed model are 0.937, 0.968 and 0.774 respectively, and the fitting performance indicator <span>(R^{2})</span> is 0.974, which are better than the comparison models Random Forest (RF), Deep Neural Network (DNN), Long Short-Term Memory (LSTM), BiGRU, iTransformer, and BiGRU-iTransformer models. Feature ablation experiments show that for flatness, the importance of parameters is ranked as follows: forward tension (Tf), roll gap difference (Gd), work roll bending force (WR), exit thickness (Hb), rolling force (<span>(F)</span>), intermediate roll bending force (IR), strip yield strength (<span>(Y)</span>), entrance thickness (Hf), rolling speed (<span>(V)</span>), backward tension (Tb), strip width (<span>(B)</span>). The experimental results are consistent with expert knowledge and underlying mechanisms, verifying the effectiveness of the attention mechanism while enhancing interpretability and credibility.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 8","pages":"6245 - 6259"},"PeriodicalIF":2.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161227","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":"Effect of Sc on the Oxidation Behavior of Al-2Li Alloys in the Molten State","authors":"Ai Ji,&nbsp;Qichi Le,&nbsp;Lichen Liu,&nbsp;Yingbin Lin,&nbsp;Tong Wang,&nbsp;Xifeng Wei,&nbsp;Xueyu Qu,&nbsp;Chenglu Hu","doi":"10.1007/s11837-025-07451-7","DOIUrl":"10.1007/s11837-025-07451-7","url":null,"abstract":"<div><p>The impact of Sc on the oxidation behavior of molten Al-2Li alloys was investigated across a temperature range of 640–840°C. It changed the overall weight gain of the alloy from a decreasing trend with increasing temperature to an increasing trend with increasing temperature throughout the oxidation process. The primary reason is that incorporating rare earth elements alters the oxide film’s mass transfer mechanism, exerting control over the oxidation process through the inward diffusion of anions. Adding Sc enhances the oxide film’s density and integrity on the alloy’s surface, rendering the substrate less susceptible to oxidative attack below 740°C. Nevertheless, this leads to the formation of Li₅AlO₄, resulting in an oxidized weight gain above 790°C that exceeds the oxidized weight gain of Al-2Li. Furthermore, tensile stresses are imposed on the oxide film in the vicinity of the gas/oxide film interface, thereby enhancing the susceptibility of the surface oxide layer to flaking.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 8","pages":"6107 - 6120"},"PeriodicalIF":2.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161230","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}