Pub Date : 2026-02-06DOI: 10.1016/j.jallcom.2026.186667
Zhanhua Ye, Chi Zhang, Yang Liu, Xiaoxi Jin, Tianyu Wei, Yaojun Lin, Fei Chen
{"title":"A Multiscale Data-Driven Framework for Mechanical Property Prediction in LPBF-Processed TA15 Alloy: Integrating Explainable Machine Learning with Data Augmentation","authors":"Zhanhua Ye, Chi Zhang, Yang Liu, Xiaoxi Jin, Tianyu Wei, Yaojun Lin, Fei Chen","doi":"10.1016/j.jallcom.2026.186667","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.186667","url":null,"abstract":"","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"30 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2026-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146134268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-02-06DOI: 10.1016/j.jallcom.2026.186664
Wei Zhang, Huanhuan Li, Ya Yang, Jianxu Hu, Huajie Luo, Jinjun Liu
Electronics and electrical systems operating in high-temperature environments demand advanced dielectric materials for capacitive energy storage. Ceramic dielectrics, while considered ideal for electrostatic capacitors, are often limited by insufficient energy storage performance and inadequate thermal stability under harsh conditions. Herein, a universal strategy is reported to optimize overall capacitive performance through chemically modified induced polar-phase evolution. The introduction of Bi0.5Na0.5TiO3 (BNT) into 0.82NaNbO3-0.18Ca0.7Sm0.2TiO3 (NN‑CST) ceramics induces lattice distortion and promotes the formation of a highly polar rhombohedral phase (R3c), leading to significantly enhanced maximum polarization. Furthermore, the corresponding ceramic exhibits pronounced relaxor behavior, low leakage current density, and a wide bandgap, which synergistically improve the breakdown strength. Consequently, the 0.85(NN‑CST)–0.15BNT ceramic achieves a high recoverable energy storage density (Wrec) of 7.42 J cm-3 with an efficiency (η) of 91% at 660 kV cm-1, along with excellent thermal stability over 20-180 ℃ (Wrec = 3.45 ± 5% J cm-3, η = 94 ± 2%). This work provides a viable approach for designing high-performance lead-free dielectric ceramics for high-temperature capacitive energy storage applications.
{"title":"Enhanced Energy Storage in NaNbO3-based Ceramics via Polar Phase Evolution over a Wide Temperature Range","authors":"Wei Zhang, Huanhuan Li, Ya Yang, Jianxu Hu, Huajie Luo, Jinjun Liu","doi":"10.1016/j.jallcom.2026.186664","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.186664","url":null,"abstract":"Electronics and electrical systems operating in high-temperature environments demand advanced dielectric materials for capacitive energy storage. Ceramic dielectrics, while considered ideal for electrostatic capacitors, are often limited by insufficient energy storage performance and inadequate thermal stability under harsh conditions. Herein, a universal strategy is reported to optimize overall capacitive performance through chemically modified induced polar-phase evolution. The introduction of Bi<sub>0.5</sub>Na<sub>0.5</sub>TiO<sub>3</sub> (BNT) into 0.82NaNbO<sub>3</sub>-0.18Ca<sub>0.7</sub>Sm<sub>0.2</sub>TiO<sub>3</sub> (NN‑CST) ceramics induces lattice distortion and promotes the formation of a highly polar rhombohedral phase (<em>R3c</em>), leading to significantly enhanced maximum polarization. Furthermore, the corresponding ceramic exhibits pronounced relaxor behavior, low leakage current density, and a wide bandgap, which synergistically improve the breakdown strength. Consequently, the 0.85(NN‑CST)–0.15BNT ceramic achieves a high recoverable energy storage density (<em>W</em><sub>rec</sub>) of 7.42<!-- --> <!-- -->J<!-- --> <!-- -->cm<sup>-3</sup> with an efficiency (<em>η</em>) of 91% at 660<!-- --> <!-- -->kV<!-- --> <!-- -->cm<sup>-1</sup>, along with excellent thermal stability over 20-180 ℃ (<em>W</em><sub>rec</sub> = 3.45 ± 5% J cm<sup>-3</sup>, <em>η</em> = 94 ± 2%). This work provides a viable approach for designing high-performance lead-free dielectric ceramics for high-temperature capacitive energy storage applications.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"17 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2026-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146122159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Synergistic Regulation of the TRIP Effect and Phase Stability on the Microstructural Evolution and Mechanical Behavior of Metastable TiZrHfNb Alloys","authors":"Liang Li, Zefeng Chen, Shiwen Hu, Dandan Zhu, Lanfeng Li, Wu Yang, Hui Quan, Dexue Liu","doi":"10.1016/j.jallcom.2026.186669","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.186669","url":null,"abstract":"","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"17 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2026-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146134284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Synergistic nanocrystallization via high-entropy design and containerless solidification for transparent luminescent glass-ceramics","authors":"Jingrong Zhang, Runqiu Lang, Xiaoyan Zhang, Xiwei Qi","doi":"10.1016/j.jallcom.2026.186675","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.186675","url":null,"abstract":"","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"92 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2026-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146134275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Simultaneous Strength and Ductility Enhancement in In-situ Alloying Ti6Al4V Alloy by Trace Carbon Addition via Laser Powder Bed Fusion (LPBF)","authors":"Hamidreza Shahriari, Homam Naffakh-Moosavy, Mohammad Hossein Mosallanejad, Luca Iuliano, Abdollah Saboori","doi":"10.1016/j.jallcom.2026.186673","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.186673","url":null,"abstract":"","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"95 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2026-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146134288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
To address volume expansion of bismuth-based anode materials for sodium-ion batteries, a double-carbon layer protection strategy is proposed to fabricate Bi nanoparticles uniformly dispersed in porous dual-layer carbon nanofibers (Bi@C@CNFs). It is found that the Kirkendall effect in the process of high-temperature carbonization can realize the double-carbon layer construction from the pyrolysis of Cu-H3BTC@PAN, while the displacement reaction introduces Bi and evenly disperses it in carbon nanofibers. As anode material evaluated for sodium-ion batteries, Bi@C@CNFs(Cu) anode exhibits an high initial discharge capacity of 825.2 mA h g-1 at 1.0 A g-1, remaining 372.9 mA h g-1 after 200 cycles. Even at a high current density of 2.0 A g-1, Bi@C@CNFs(Cu) anode demonstrates remarkable performance with a specific capacity of 301.2 mAh g-1. Notably, when the current density is decreased back to 0.1 A g-1, the specific capacity recovers to 551 mAh g-1. The excellent sodium storage is ascribed to the synergistic effect of the homogeneous dispersion and porous double-carbon layer fiber network. The homogeneous Bi distribution of Bi alleviates volume expansion, while the porous dual-layer carbon fiber network not only accommodates volume expansion, but also accelerates the kinetics of electrochemical reaction and enhances the electroconductivity.
为了解决铋基钠离子电池负极材料的体积膨胀问题，提出了一种双碳层保护策略，以制备均匀分散在多孔双层碳纳米纤维（Bi@C@CNFs）中的铋纳米颗粒。发现高温碳化过程中的Kirkendall效应可以实现Cu-H3BTC@PAN热解的双碳层构建，而位移反应引入Bi并将其均匀分散在碳纳米纤维中。作为钠离子电池负极材料，Bi@C@CNFs（Cu）负极在1.0 A g-1条件下具有825.2 mA h g-1的高初始放电容量，在200次循环后仍保持372.9 mA h g-1。即使在2.0 a g-1的高电流密度下，Bi@C@CNFs（Cu）阳极也表现出优异的性能，其比容量为301.2 mAh g-1。值得注意的是，当电流密度降低到0.1 A g-1时，比容量恢复到551 mAh g-1。优异的储钠性能归因于均匀分散和多孔双碳层纤维网络的协同作用。Bi的均匀分布减轻了体积膨胀，而多孔双层碳纤维网络不仅可以容纳体积膨胀，还可以加速电化学反应动力学，提高电导率。
{"title":"Double-carbon layer protection strategy for enhancing the sodium storage of Bi@C@CNFs composites with three-dimensional structure","authors":"Ben Hu, Shuya Zhang, Zhenpeng Zhu, Xingmei Guo, Yuanjun Liu, Xiangjun Zheng, Qianqian Fan, Zhongyao Duan, Qinghong Kong, Junhao Zhang","doi":"10.1016/j.jallcom.2026.186672","DOIUrl":"https://doi.org/10.1016/j.jallcom.2026.186672","url":null,"abstract":"To address volume expansion of bismuth-based anode materials for sodium-ion batteries, a double-carbon layer protection strategy is proposed to fabricate Bi nanoparticles uniformly dispersed in porous dual-layer carbon nanofibers (Bi@C@CNFs). It is found that the Kirkendall effect in the process of high-temperature carbonization can realize the double-carbon layer construction from the pyrolysis of Cu-H<sub>3</sub>BTC@PAN, while the displacement reaction introduces Bi and evenly disperses it in carbon nanofibers. As anode material evaluated for sodium-ion batteries, Bi@C@CNFs(Cu) anode exhibits an high initial discharge capacity of 825.2<!-- --> <!-- -->mA<!-- --> <!-- -->h g<sup>-1</sup> at 1.0<!-- --> <!-- -->A<!-- --> <!-- -->g<sup>-1</sup>, remaining 372.9<!-- --> <!-- -->mA<!-- --> <!-- -->h g<sup>-1</sup> after 200 cycles. Even at a high current density of 2.0<!-- --> <!-- -->A<!-- --> <!-- -->g<sup>-1</sup>, Bi@C@CNFs(Cu) anode demonstrates remarkable performance with a specific capacity of 301.2 mAh g<sup>-1</sup>. Notably, when the current density is decreased back to 0.1<!-- --> <!-- -->A<!-- --> <!-- -->g<sup>-1</sup>, the specific capacity recovers to 551 mAh g<sup>-1</sup>. The excellent sodium storage is ascribed to the synergistic effect of the homogeneous dispersion and porous double-carbon layer fiber network. The homogeneous Bi distribution of Bi alleviates volume expansion, while the porous dual-layer carbon fiber network not only accommodates volume expansion, but also accelerates the kinetics of electrochemical reaction and enhances the electroconductivity.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"9 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2026-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146122160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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