Journal of Magnesium and Alloys最新文献_第4页

Greening Pidgeon process with deoxidized diamond-wire sawing silicon waste 脱氧金刚石丝锯硅废料的绿皮鸽工艺研究

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-06-10 DOI: 10.1016/j.jma.2025.05.001

Xuenan Feng, Huajing Fang, Shaochuan Zheng, Pengfei Wang, Chao Du, Zhiwei Shan

{"title":"Greening Pidgeon process with deoxidized diamond-wire sawing silicon waste","authors":"Xuenan Feng, Huajing Fang, Shaochuan Zheng, Pengfei Wang, Chao Du, Zhiwei Shan","doi":"10.1016/j.jma.2025.05.001","DOIUrl":"https://doi.org/10.1016/j.jma.2025.05.001","url":null,"abstract":"Diamond-wire sawing silicon waste (DWSSW) as a reductant of the Pidgeon process is beneficial for alleviating the high energy consumption of primary magnesium production. However, the oxygen in DWSSW exists in the form of SiO<sub>2</sub> coated on the Si surface, which is not conducive to the silicothermic reaction and thus affecting the yield of primary magnesium. In this study, we proposed a modified deoxidation method utilizing ammonium fluoride (NH<sub>4</sub>F) and hydrochloric acid (HCl) solutions to deoxidize the DWSSW. It was found that NH<sub>4</sub>F solution effectively reduced the oxygen content in DWSSW and the deoxidation efficiency increased with higher NH<sub>4</sub>F concentration. The addition of HCl further enhanced the deoxidation efficiency, leading to a minimum oxygen content of 1.31% in the deoxidized DWSSW. Transmission electron microscopy (TEM) images indicated a significant reduction in SiO<sub>2</sub> layer thickness, which improves the chemical reactivity of the material. The deoxidized DWSSW was subsequently employed as the reductant in the Pidgeon process to produce primary magnesium. Consequently, the reduction conversion of the Pidgeon process increased by 6.7% compared to raw DWSSW. This work not only provided an effective solution to reduce the oxygen content in DWSSW, but also expanded its application in Pidgeon process, promoting primary magnesium industry towards energy conservation and cost reduction.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"36 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144260730","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}

引用次数: 0

The post-deformation softening and hardening mechanisms of a Mg-2Y-1Zn alloy during double-stage hot compression Mg-2Y-1Zn合金双级热压缩变形后的软化硬化机制

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-06-06 DOI: 10.1016/j.jma.2025.05.005

Hang Xu, Yang Mo, Fulin Jiang, Luoyi Wu, Jie Tang, Jie Teng, Hui Zhang

{"title":"The post-deformation softening and hardening mechanisms of a Mg-2Y-1Zn alloy during double-stage hot compression","authors":"Hang Xu, Yang Mo, Fulin Jiang, Luoyi Wu, Jie Tang, Jie Teng, Hui Zhang","doi":"10.1016/j.jma.2025.05.005","DOIUrl":"https://doi.org/10.1016/j.jma.2025.05.005","url":null,"abstract":"Multi-pass hot processing methods are commonly used in magnesium (Mg) alloys to overcome the poor workability due to limited slip systems, which generally involve complicated post-deformation softening and hardening behaviors. In this work, to reveal post-deformation softening and hardening mechanisms of a Mg-2Y-1 Zn alloy, double-stage hot compression tests and microstructural observations were conducted. The results showed that the softening fraction of Mg-2Y-1 Zn alloy showed a non-linear dependence on deformation conditions and could be general coupled by <em>Z</em> parameter. Due to the formation and cross-overlapping of twins and kinks, only static recovery (SRV) occurred during holding process at 300 °C/0.001 s<sup>-1</sup> which led to the least static softening: 5.52 % after 10 s of holding. For samples at 400 °C/0.001s<sup>-1</sup>, the enhanced post-deformation softening, which is 11.93 % after 10 s of holding, was attributed to static recrystallization (SRX) followed continuous dynamic recrystallization (CDRX) happened during first deformation stage as well as SRV influenced by the LPSO phases. Under deformation condition of 400 °C/0.1 s<sup>-1</sup>, the coupled meta-dynamic recrystallization (MDRX) and SRX resulted in serious stress relaxation, which is 42.83 % after 10 s of holding, and caused hardening phenomenon at reloading stage. The 18R-LPSO and 14H-LPSO phases synchronously worked on deformation behaviors and limited the growth of recrystallized grains. Further, a simplified static softening kinetics model was established based on Johnson-Mehl-Avrami-Kolmogorov equation and employed to rationalize experimental data.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"39 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144228988","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}

引用次数: 0

Effect of magnesium fluoride catalysis on the vacuum reducing properties of magnesium oxide 氟化镁催化对氧化镁真空还原性能的影响

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-06-04 DOI: 10.1016/j.jma.2025.05.008

Tingzhuang Ma, Bin Yang, Yang Tian, Wenlong Jiang, Baoqiang Xu, Guozheng Zha, Shuji Wu, Haosong Yu, Rong Yu

{"title":"Effect of magnesium fluoride catalysis on the vacuum reducing properties of magnesium oxide","authors":"Tingzhuang Ma, Bin Yang, Yang Tian, Wenlong Jiang, Baoqiang Xu, Guozheng Zha, Shuji Wu, Haosong Yu, Rong Yu","doi":"10.1016/j.jma.2025.05.008","DOIUrl":"https://doi.org/10.1016/j.jma.2025.05.008","url":null,"abstract":"Low reduction efficiency is a critical issue that limits the advancement of the magnesium vacuum carbothermal reduction smelting process. This investigation introduces a novel magnesium smelting process that substitutes magnesium fluoride (MgF₂) for calcium fluoride (CaF₂) as a catalyst in the vacuum carbothermal reduction of magnesium. The viability and optimal operating conditions of the new method were assessed through thermodynamic calculations of Gibbs free energy in the MgO<img alt=\"single bond\" src=\"https://sdfestaticassets-us-east-1.sciencedirectassets.com/shared-assets/55/entities/sbnd.gif\" style=\"vertical-align:middle\"/>C-MgF₂ system. Additionally, the catalytic effects of MgF₂ on the reduction of MgO were examined under different holding times in vacuum conditions. Analytical results indicated a significant improvement in the reduction efficiency of MgO upon the incorporation of MgF₂. MgF₂ serves a catalytic function in the reduction process, When F⁻ acts, it elevates the relative concentration of Mg in the reduction system and promotes the reduction reaction. Improvements in reduction efficiency are observed as the holding period duration increases and with higher concentrations of MgF₂. However, the improvement in reduction efficiency tends to plateau when the concentration exceeds 7 %. The resulting magnesium condensate exhibits a robust crystalline structure, with a purity of 79.39 %. The crystallization outcomes are influenced by the degree of reverse reactions. Compared to CaF₂, MgF₂ offers significant economic, environmental, and catalytic advantages. This process supports the goals of sustainable, green development and aligns with clean production standards in the magnesium metallurgy sector.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"59 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144211021","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}

引用次数: 0

Exceptional metallurgical bonding mechanism via Nano-thick layer of interfacial solid solution in dissimilar welding 异种焊接中纳米厚层界面固溶体的特殊冶金结合机制

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-06-03 DOI: 10.1016/j.jma.2025.05.007

Xuebin Zhuo, Haining Yao, Ke Chen, Katsuyoshi Kondoh, Liming Peng, Min Wang, Xueming Hua, Aidang Shan

引用次数: 0

Precipitation characteristics and short-time aging treatment of Mg-Gd-Y-Zn-Zr alloy Mg-Gd-Y-Zn-Zr合金的析出特性及短时时效处理

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-06-01 DOI: 10.1016/j.jma.2025.05.004

Mu Meng, Zhiqiang Zhai, Genxing Lei, Zhaoming Yan, Weihao Wu, Qiang Wang, Zhimin Zhang

{"title":"Precipitation characteristics and short-time aging treatment of Mg-Gd-Y-Zn-Zr alloy","authors":"Mu Meng, Zhiqiang Zhai, Genxing Lei, Zhaoming Yan, Weihao Wu, Qiang Wang, Zhimin Zhang","doi":"10.1016/j.jma.2025.05.004","DOIUrl":"https://doi.org/10.1016/j.jma.2025.05.004","url":null,"abstract":"Currently, Mg-Gd-Y-Zn-Zr alloys face the issue of a long aging duration. To establish a short-time aging treatment route, the precipitation characteristics and their effects on mechanical properties during elevated-temperature heat treatment prior to low-temperature aging treatment, low-temperature single-stage aging treatment, and low-temperature two-stage aging treatment were studied. The following results were obtained: Wider intragranular lamellar phases, including 14-LPSO and γ′′ phases, are more easily obtained during long-term holding at heat treatment temperatures of 400 °C and 450 °C. Although these lamellar phases do not contribute to strengthening, they enhance ductility by hindering crack propagation. Micro-sized <em>β</em> phases precipitate more readily at heat treatment temperatures of 300 °C and 350 °C. Intragranular needle-like <em>β</em> phases are not effective strengthening phases, and <em>β</em> phase precipitating along grain boundaries form a networked distribution, which reduces ductility. The nano-sized <em>β'</em> phase, as the main strengthening phase, is more likely to precipitate during single-stage aging at temperatures of 200 °C and 250 °C. The <em>β'</em> phase formed at 200 °C is denser, leading to higher strength, but requiring a longer aging time. For two-stage aging, which involves a primary-stage at 200 °C for 8 to 12 h followed by a second-stage at 250 °C for 10 h, the aging time is reduced to at least one-quarter of that required for single-stage aging at 200 °C, ensuring strength while improving ductility. The formation of very dense nano-sized <em>β'</em> phases during the primary-stage aging facilitates the densification of <em>β'</em> phases during the subsequent second-stage aging. Additionally, the shortened aging time hinders the precipitation of <em>β</em> phase along the grain boundaries, thus improving ductility.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"3 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144189037","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}

引用次数: 0

A novel Mg-Zn-Nd-Zr alloy lumbar interbody fusion cage: An in vitro and in vivo study 一种新型Mg-Zn-Nd-Zr合金腰椎椎体间融合器：体外和体内研究

IF 15.8 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-06-01 DOI: 10.1016/j.jma.2024.06.017

Pengfei Chi , Wen Yu , Bing Wu , Ming Gao , Kai Song , Kaige Mao , Bo Li , Xuanhui Liu , Haoming Liu , Chuyue Zhang , Jianheng Liu , Yang Yu , Qiaoling Chen , Ruoxin Zhao , Ning Yu , Keya Mao , Ke Yang , Lili Tan , Yan Wang , Zheng Wang

{"title":"A novel Mg-Zn-Nd-Zr alloy lumbar interbody fusion cage: An in vitro and in vivo study","authors":"Pengfei Chi , Wen Yu , Bing Wu , Ming Gao , Kai Song , Kaige Mao , Bo Li , Xuanhui Liu , Haoming Liu , Chuyue Zhang , Jianheng Liu , Yang Yu , Qiaoling Chen , Ruoxin Zhao , Ning Yu , Keya Mao , Ke Yang , Lili Tan , Yan Wang , Zheng Wang","doi":"10.1016/j.jma.2024.06.017","DOIUrl":"10.1016/j.jma.2024.06.017","url":null,"abstract":"<div><div>Interbody fusion is recognized as the golden standard of surgical intervention for degenerative disc disease (DDD). Interbody fusion cage made of polyetheretherketone (PEEK) is commonly used in lumbar interbody fusion surgery in the treatment of DDD worldwide. However, there are some limitations of PEEK including their bio-inert nature and impediment to host bone integration. This study aimed to evaluate the degradation profile and osteoinductive potential of biodegradable Mg-Zn-Nd-Zr cages with/without micro-arc oxidation (MAO) coatings. The Mg-Zn-Nd-Zr alloy cages, whether coated with MAO or not, demonstrated commendable biocompatibility and biomechanical properties. Immersion and electrochemical tests show better corrosion resistance of MAO coatings <em>in vitro</em>. mRNA sequencing, RT-qPCR and Western blotting revealed that Mg-Zn-Nd-Zr and Mg-Zn-Nd-Zr/MAO had a better effectiveness on osteoinductivity. <em>In vivo</em> evaluations in ovine models over 12 weeks and 24 weeks post-implantation revealed radiological and histological evidence of enhanced bone formation adjacent to the Mg-Zn-Nd-Zr alloy cages compared to PEEK counterparts. Moreover, the MAO-coated cages exhibited a reduced propensity for gas formation. The Mg-Zn-Nd-Zr alloy is as a superior osteoinductive material compared with PEEK, with the MAO coating offering an advantage in mitigating gas production. Nonetheless, further research is warranted to refine the alloy's composition or surface treatments, particularly to address the challenges associated with rapid gas evolution during the early post-implantation period.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 6","pages":"Pages 2651-2669"},"PeriodicalIF":15.8,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144623819","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}

引用次数: 0

Unveiling anomalous strengthening and deformation mechanism evolution in a Mg-Gd-Y-Zr alloy under rate-temperature coupling effects 揭示速率-温度耦合作用下Mg-Gd-Y-Zr合金的异常强化和变形机制演变

IF 15.8 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-06-01 DOI: 10.1016/j.jma.2025.03.018

Jingli Li , Chen Wen , Xiuzhu Han

{"title":"Unveiling anomalous strengthening and deformation mechanism evolution in a Mg-Gd-Y-Zr alloy under rate-temperature coupling effects","authors":"Jingli Li , Chen Wen , Xiuzhu Han","doi":"10.1016/j.jma.2025.03.018","DOIUrl":"10.1016/j.jma.2025.03.018","url":null,"abstract":"<div><div>While the deformation behavior of rare-earth magnesium alloys at high temperatures has been extensively studied, the deformation mechanisms under moderate-to-low temperatures and high strain rates remain insufficiently understood. To address this gap, hot compression tests were conducted on a Mg-11Gd-3Y-0.5Zr (wt.%) alloy over a temperature range of 150 °C–450 °C under strain rates of 10⁻³ s⁻¹ (low strain rate (LSR)) and 10 s⁻¹ (high strain rate (HSR)) to explore the strain rate-temperature coupling effects during hot deformation. The results revealed an anomalous increase in peak stress at 150 °C–250 °C as the strain rate decreased, attributed to the combined effects of nano-precipitates, dislocation cell structures, and serrated flow induced by dynamic strain aging. At higher temperatures, strain rate influences softening pathways: under HSR at 450 °C, the effect of twinning shifts from strengthening to facilitating dynamic recrystallization (DRX), resulting in substantial grain refinement (∼4 µm, 81% area fraction at a strain of 0.6). In contrast, at LSR, softening is dominated by dynamic recovery at 350 °C, with limited DRX (∼4 µm grains, 10% area fraction at a strain of 0.6) occurs at 400 °C. These findings clarify the dual role of twinning and its interaction with rate-temperature conditions, providing valuable insights into optimizing the hot processing of rare-earth magnesium alloys.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 6","pages":"Pages 2913-2926"},"PeriodicalIF":15.8,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143832326","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}

引用次数: 0

Interfacial processes of Mg anodes for magnesium-sulfur batteries: An EIS study 镁硫电池镁阳极界面过程的EIS研究

IF 15.8 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-06-01 DOI: 10.1016/j.jma.2025.04.001

Joachim Häcker , Tobias Rommel , Pia Lange , Felix Kampmann , Jürgen Remmlinger , Zhirong Zhao-Karger , K. Andreas Friedrich , Maryam Nojabaee

{"title":"Interfacial processes of Mg anodes for magnesium-sulfur batteries: An EIS study","authors":"Joachim Häcker , Tobias Rommel , Pia Lange , Felix Kampmann , Jürgen Remmlinger , Zhirong Zhao-Karger , K. Andreas Friedrich , Maryam Nojabaee","doi":"10.1016/j.jma.2025.04.001","DOIUrl":"10.1016/j.jma.2025.04.001","url":null,"abstract":"<div><div>The development of magnesium batteries strongly relies on the use of a Mg metal anode and its benefits of high volumetric capacity, reduction potential, low cost and improved safety, however, to date, it still lacks sufficient cycling stability and reversibility. Along with the electrolyte selection, the interfacial processes can be affected by the anode itself applying electrode engineering strategies. In this study, six different Mg anode approaches – namely bare Mg metal, Mg foil with an organic and inorganic artificial solid electrolyte interphase, Mg alloy, Mg pellet and a tape-casted Mg slurry – are selected to be investigated by means of electrochemical impedance spectroscopy in Mg|Mg and Mg|S cells. While a plating/stripping overpotential asymmetry was observed and assigned to the desolvation during Mg plating, the impedance spectra of stripping and plating hardly differ for all applied anodes. In contrast, the sulfur species significantly influence the impedance response by altering the surface layer composition. By systematic process assignment of the gained spectra in Mg|Mg and Mg|S cells, specific equivalent circuit models for different anodes and cell conditions are derived. Overall, the study aims to give valuable insights into the interfacial processes of Mg anodes to support their further development toward long-lasting Mg batteries.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 6","pages":"Pages 2680-2698"},"PeriodicalIF":15.8,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143926341","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}

引用次数: 0

Simultaneously improving strength and ductility of Mg-Gd-Zr alloy via solute segregation 同时通过溶质偏析提高Mg-Gd-Zr合金的强度和塑性

IF 15.8 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-06-01 DOI: 10.1016/j.jma.2024.11.022

Chunquan Liu , Huaqiang Xiao , Bo Lin , Hui Shi , Xianhua Chen

{"title":"Simultaneously improving strength and ductility of Mg-Gd-Zr alloy via solute segregation","authors":"Chunquan Liu , Huaqiang Xiao , Bo Lin , Hui Shi , Xianhua Chen","doi":"10.1016/j.jma.2024.11.022","DOIUrl":"10.1016/j.jma.2024.11.022","url":null,"abstract":"<div><div>Interface segregation of solute atoms has a profound effect on properties of engineering alloys. In this study, we report a novel strategy for breaking the strength-ductility dilemma of Mg alloy via solute segregation. The hot extruded Mg-1.8Gd-0.3Zr (wt.%) alloy sheet was subjected to three different passes of rolling, and then heat-treated at 200 °C. The high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) reveals a remarkable segregation of solute Gd atoms along high and low-angel grain boundaries (GBs). Under almost precipitation-free conditions, the strength and ductility of rolled alloy sheets are simultaneously improved after annealing. Especially for the annealed 3-passes-rolled specimen, the yield strength, ultimate tensile strength, and elongation are simultaneously increased by 11.2%, 7.3%, and 18%, respectively. The solute segregation endows the rolled plate with excellent grain size stability and provides a prominent extra solute cluster strengthening, which completely resists the other softening effects, including dislocation annihilation and grain coarsening during the heating. Meanwhile, the directional migration of Gd atoms and the annihilation of dislocations provide a “clear” space within the grain, which is beneficial for the moving and accumulating of subsequent dislocations. This work sheds light on the solute partitioning behavior and realizes a good application of GB segregation in improving the comprehensive mechanical properties of Mg alloys.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 6","pages":"Pages 2724-2739"},"PeriodicalIF":15.8,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142793142","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}

引用次数: 0

The key role of Zn in enhancing precipitation kinetics and refinement of Mg₁₇Al₁₂ and Mg₂Sn phases through trace Na additions 通过痕量添加 Na，Zn 在增强 Mg₁₇Al₁₂ 和 Mg₂Sn 相的沉淀动力学和细化过程中的关键作用

IF 15.8 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-06-01 DOI: 10.1016/j.jma.2025.03.024

Sumi Jo , Tae-Hoon Kim , Cheol-Woong Yang , Young Min Kim

{"title":"The key role of Zn in enhancing precipitation kinetics and refinement of Mg₁₇Al₁₂ and Mg₂Sn phases through trace Na additions","authors":"Sumi Jo , Tae-Hoon Kim , Cheol-Woong Yang , Young Min Kim","doi":"10.1016/j.jma.2025.03.024","DOIUrl":"10.1016/j.jma.2025.03.024","url":null,"abstract":"<div><div>This study investigates zinc's (Zn) key role in enhancing the precipitation kinetics and refinement of Mg₁₇Al₁₂ and Mg₂Sn phases in magnesium alloys through trace sodium (Na) additions. Magnesium alloys with varying compositions of aluminum (Al), tin (Sn), Zn, and Na were prepared and aged at 453 K. Microstructural analyses were conducted using transmission electron microscopy (TEM), scanning transmission electron microscopy (STEM), and atom probe tomography (APT). Trace additions of Na significantly enhanced the precipitation responses of both Mg₁₇Al₁₂ and Mg₂Sn phases. When Zn was co-added with Na, as in the ATZ641N3 alloy (Mg–6Al–4Sn–1Zn–0.3Na), there was a pronounced refinement in precipitate morphology and acceleration of precipitation kinetics. The ATZ641N3 alloy achieved a peak hardness of 103 Hv at 36 hours, compared to 91 Hv at 72 hours for the ATZ641 alloy without Na. The simultaneous addition of Zn and Na led to the formation of Sn–Na–Zn particles that acted as effective nucleation sites for Mg₂Sn, promoting aluminum partitioning and accelerating the precipitation of Mg₁₇Al₁₂ through Al-rich regions. Additionally, Zn and Na co-segregated within the Mg₁₇Al₁₂ phase, reducing misfit strain caused by Zn substitution and improving precipitate stability and refinement. These findings highlight Zn's critical role, alongside trace Na additions, in refining and accelerating the precipitation of Mg₁₇Al₁₂ and Mg₂Sn phases, thereby enhancing the age-hardening response of magnesium alloys.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 6","pages":"Pages 2740-2751"},"PeriodicalIF":15.8,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143862278","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}

引用次数: 0