Scripta Materialia最新文献_第3页

Oxygen-induced interfacial structure selection, dopant segregation and adhesive strength of α/β interfaces in titanium alloys 钛合金中氧致界面结构选择、掺杂偏析及α/β界面的结合强度

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-06-07 DOI: 10.1016/j.scriptamat.2025.116813

Xiaofu Zhang , Shu Wang , Minghao Hua , Ruirun Chen , Weipeng Xu , Hongwei Wang

{"title":"Oxygen-induced interfacial structure selection, dopant segregation and adhesive strength of α/β interfaces in titanium alloys","authors":"Xiaofu Zhang , Shu Wang , Minghao Hua , Ruirun Chen , Weipeng Xu , Hongwei Wang","doi":"10.1016/j.scriptamat.2025.116813","DOIUrl":"10.1016/j.scriptamat.2025.116813","url":null,"abstract":"<div><div>The dopant segregation and interfacial strengthening in multi-phase engineering alloys have been extensively investigated to understand bonding behavior and enhance mechanical properties by employing density functional theory (DFT). However, the properties of interface involving dynamical/mechanical unstable structures, e.g., β-Ti at low temperatures, are still obscured. We employed DFT with tailored restrictive relaxation to comprehensively investigate the structure, segregation and strength of α/β interface in titanium alloys. The results provide a new insight to the inconsistency of α/β interface types between theoretical calculations and experimental observations, i.e., the hollow-type interface would be destroyed by inevitable oxygen impurities. Moreover, many reported segregation behaviors observations are rationalized in the case of single doping. Boron is screened as the most effective strengthening element, and origin of interface hardening is revealed by electronic structure analysis. Furthermore, we explore the promising selections of X-O co-strengthening strategy to promote environment-friendly development of titanium alloys.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"267 ","pages":"Article 116813"},"PeriodicalIF":5.3,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144239967","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}

引用次数: 0

The role of excess vacancies in stabilizing solute clusters in low-alloy steels 过量空位在稳定低合金钢中溶质团簇中的作用

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-06-06 DOI: 10.1016/j.scriptamat.2025.116797

Jia-Hong Ke , Anshul Kamboj , Mukesh Bachhav

引用次数: 0

Tribological improvements through in-situ oxide layer formation in Fe-based nano-dual-phase glass-crystal alloys 原位氧化层形成对铁基纳米双相玻璃晶合金摩擦学性能的改善

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-06-05 DOI: 10.1016/j.scriptamat.2025.116793

Xiyan Lei , Yi Ren , Long Wang , Zhi-Wei Shan , Ge Wu

引用次数: 0

Influence of boron substitution at Si-site and associated interplay between structure, water-stability, ion-transport and interfacial resistance of NASICON-structured Na3Zr2Si2PO12-based solid electrolyte si位硼取代对nasiconon结构na3zr2si2po12基固体电解质结构、水稳定性、离子输运和界面阻力的影响

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-06-05 DOI: 10.1016/j.scriptamat.2025.116800

Illa Mani Pujitha , Sreyanka Karmakar , Bibek Samanta , Sushobhan Kobi , Shivam More , Amartya Mukhopadhyay

{"title":"Influence of boron substitution at Si-site and associated interplay between structure, water-stability, ion-transport and interfacial resistance of NASICON-structured Na3Zr2Si2PO12-based solid electrolyte","authors":"Illa Mani Pujitha , Sreyanka Karmakar , Bibek Samanta , Sushobhan Kobi , Shivam More , Amartya Mukhopadhyay","doi":"10.1016/j.scriptamat.2025.116800","DOIUrl":"10.1016/j.scriptamat.2025.116800","url":null,"abstract":"<div><div>Boron (B<sup>3+</sup>) substitution for Si<sup>4+</sup> in the tetrahedral site of NASICON-structured Na<sub>3</sub>Zr<sub>2</sub>Si<sub>2</sub>PO<sub>12</sub>-based polycrystalline solid electrolyte (NZSP), as confirmed via diffraction and solid-state <sup>11</sup>B NMR, has been found to improve the sinter-density to ∼98.4 %ρ<sub>th</sub> (from ∼93.2 %ρ<sub>th</sub>) and enlarge the grain size by ∼73 %. The combination of enhanced grain/bulk Na-ion conductivity due to increment in the Na-content and lowered grain-boundary resistance due to enlarged grain size, as well as accrued sinter-density, results in an overall enhancement of Na-ion conductivity by ∼143 %. Shrinkage of unit cell and reduction in grain boundary area also render B<sup>3+</sup>-substituted NZSP 'water-stable'. Furthermore, B<sup>3+</sup>-substitution improves mechanical properties and lowers Na/NZSP interfacial resistance (by ∼58 %; to ∼194 Ω cm<sup>2</sup>), which are beneficial towards suppression of Na-dendrite growth/penetration. Overall, this work not only reveals an interesting interplay between the above aspects for inorganic ion conductors, but also showcases the importance of adopting an integrated strategy towards the development of superior solid electrolytes for next-generation solid-state batteries.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"267 ","pages":"Article 116800"},"PeriodicalIF":5.3,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144213481","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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Gamma-ray promoted defects dipole migration and fast aging mechanism in KNN-based ceramics γ射线促进knn基陶瓷缺陷偶极子迁移及快速老化机理

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-06-04 DOI: 10.1016/j.scriptamat.2025.116792

Yongqi Pan , Yi Ding , Yuntao Huang , Ting Zheng , Jiagang Wu

{"title":"Gamma-ray promoted defects dipole migration and fast aging mechanism in KNN-based ceramics","authors":"Yongqi Pan , Yi Ding , Yuntao Huang , Ting Zheng , Jiagang Wu","doi":"10.1016/j.scriptamat.2025.116792","DOIUrl":"10.1016/j.scriptamat.2025.116792","url":null,"abstract":"<div><div>The property evolution of piezoelectric ceramics under extreme environments such as gamma irradiation still lacks research. Here, the evolution of structure and electrical properties for potassium sodium niobate [K, Na)NbO<sub>3</sub>]-based ceramics under γ-ray irradiation was systematically investigated, with a focus on possible defect dipole migration mechanism. Compared with unirradiated ceramics, ceramics after irradiation have a stable <em>d</em><sub>33</sub> and rapid increase of <em>Q</em><sub>m</sub> as well as a fast-aging phenomenon. This is attributed to the hardened domain walls, instead of the variation of domain structure and the number of defect dipoles. The internal defect dipoles (<span><math><msup><mrow><mo>[</mo><mrow><mi>C</mi><msubsup><mi>u</mi><mrow><mi>N</mi><mi>b</mi></mrow><msup><mrow></mrow><mrow><mo>″</mo><mo>′</mo></mrow></msup></msubsup><mo>−</mo><msubsup><mi>V</mi><mi>O</mi><mrow><mo>.</mo><mo>.</mo></mrow></msubsup></mrow><mo>]</mo></mrow><mo>′</mo></msup></math></span>) are at a lower energy position, which will move toward the domain walls and produce a strong pinning effect during irradiation. This work reveals the property evolution and corresponding defect dipole migration mechanism in the piezoceramics under gamma irradiation, provides basic understanding for piezo-devices operating in harsh environments.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"267 ","pages":"Article 116792"},"PeriodicalIF":5.3,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144204628","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}

引用次数: 0

Mechanical amorphization drives fragmentation in a nanocrystalline Ni 机械非晶化驱动镍纳米晶的破碎

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-06-02 DOI: 10.1016/j.scriptamat.2025.116798

Zhuofei Li , Heng Li , Lei Zhao , Longlong Ma , Shuang Han , Hongxiang Zong , Jianshe Lian , Xiaozhou Liao , Gang Sha , Xiangdong Ding , Jun Sun

引用次数: 0

Three-dimensional neutron diffraction study of dendrite growth behavior in Ni-based single-crystal turbine blades ni基单晶涡轮叶片枝晶生长行为的三维中子衍射研究

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-05-31 DOI: 10.1016/j.scriptamat.2025.116770

Pucong Sheng , Jiachen Long , Nan Li , Jingyi Zhou , Yunsong Zhao , Hao Lin , Shengyi Zhong

{"title":"Three-dimensional neutron diffraction study of dendrite growth behavior in Ni-based single-crystal turbine blades","authors":"Pucong Sheng , Jiachen Long , Nan Li , Jingyi Zhou , Yunsong Zhao , Hao Lin , Shengyi Zhong","doi":"10.1016/j.scriptamat.2025.116770","DOIUrl":"10.1016/j.scriptamat.2025.116770","url":null,"abstract":"<div><div>Three-dimensional Neutron Diffraction (3DND) microscopy is performed using a monochromatic beam and applied for the first time to investigate the dendrite growth behavior in Ni-based single-crystal turbine blades. Leveraging the high penetration depth and non-destructive characterization capabilities of neutrons, <strong>3DND provides a statistical analysis of crystallographic orientation distributions and stress states of single crystal at component level</strong>. In this study, lattice constants of both γ and γ' phases decrease progressively during dendritic growth, with γ phase exhibiting initial tensile strain that subsequently relaxed to zero. Misorientation analysis reveals a tilt misorientation reaching up to 5°, significantly larger than the twist of 1° Both types of misorientation increases as the dendrites develop, highlighting the anisotropic nature of microstructural evolution. These findings demonstrate the potential of 3DND for characterizing internal lattice strain, orientation distributions, and defect evolution in critical structural components, paving the way for improved manufacturing processes and material reliability.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"266 ","pages":"Article 116770"},"PeriodicalIF":5.3,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144178852","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}

引用次数: 0

Strain induced microstructural changes in cold sprayed IN718 coating 冷喷涂IN718涂层应变诱导的组织变化

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-05-31 DOI: 10.1016/j.scriptamat.2025.116796

Milan Shahana, M. Sadhasivam, K.G. Pradeep, Srinivasa Rao Bakshi, M. Kamaraj

引用次数: 0

Impact of elevated temperature on the Giant magnetoimpedance effect in Co-rich glass-coated microwires 高温对富钴玻璃微丝巨磁阻抗效应的影响

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-05-31 DOI: 10.1016/j.scriptamat.2025.116794

A. Gonzalez , I. Skorvanek , M. Jakubcin , V. Zhukova , A. Zhukov

{"title":"Impact of elevated temperature on the Giant magnetoimpedance effect in Co-rich glass-coated microwires","authors":"A. Gonzalez , I. Skorvanek , M. Jakubcin , V. Zhukova , A. Zhukov","doi":"10.1016/j.scriptamat.2025.116794","DOIUrl":"10.1016/j.scriptamat.2025.116794","url":null,"abstract":"<div><div>We studied the giant magnetoimpedance, GMI, effect in as-prepared and current annealed Co<sub>72</sub>Fe<sub>4</sub>B<sub>13</sub>Si<sub>11</sub> glass-coated microwires at ambient and elevated temperatures. We observed an increase in the GMI ratio, <em>ΔZ/Z</em>, with an increase in the measurement temperature up to 100 °C, followed by a considerable decrease of its values above 100 °C until its complete disappearance at the Curie temperature. A remarkable increase in <em>ΔZ/Z</em> up to 900 % is observed at 100 °C, while the magnetic field sensitivity up to 14 %/(A/m) has been experimentally recorded. Observed changes are reversible up to 100 °C, but past it, some irreversible changes to hysteresis loops and GMI effect are documented, such as transformation of hysteresis loops shape from almost linear to rectangular, and transition in the <em>ΔZ/Z(H)</em> dependencies from double-peak to almost single-peak. The origins of these changes in magnetic properties are discussed in terms of temperature dependence and the relaxation of internal stresses.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"266 ","pages":"Article 116794"},"PeriodicalIF":5.3,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144185161","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}

引用次数: 0

Thick-film SmCo5 micromagnet fabrication using molten salt 熔盐制备厚膜SmCo5微磁体

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-05-30 DOI: 10.1016/j.scriptamat.2025.116775

Ryogen Fujiwara, Daisuke Shiga , Masaki Tomita, Mio Otsuru, Kenichi Suzuki, Yoshinori Fujikawa

{"title":"Thick-film SmCo5 micromagnet fabrication using molten salt","authors":"Ryogen Fujiwara, Daisuke Shiga , Masaki Tomita, Mio Otsuru, Kenichi Suzuki, Yoshinori Fujikawa","doi":"10.1016/j.scriptamat.2025.116775","DOIUrl":"10.1016/j.scriptamat.2025.116775","url":null,"abstract":"<div><div>Sintered Nd-Fe-B magnets encounter thickness and shape limitations due to machining-induced degradation. Although Nd-Fe-B magnetic films show promise, achieving thicker films with complex shapes and larger sample sizes is difficult due to limitations in existing deposition methods. In this study, we successfully developed a method to fabricate a 100-μm-thick SmCo<sub>5</sub> micromagnet film on a complex Co structure using molten-salt processing to diffuse Sm into Co. The magnetic properties of the film were characterized using vibrating sample magnetometry measurements, revealing a zero-field magnetic flux density of ∼1.0 T and coercivity of ∼820 kA/m. The fabricated film exhibited anisotropic magnetism, with its easy magnetization axis aligned along the thickness direction. Utilizing the unique properties of the micromagnet, we then designed and fabricated a stable 1.5-mm-diameter micromotor, capable of rotating at 1,000 rpm. This study enables the fabrication of 100-μm-thick SmCo₅ micromagnets for miniaturized electromagnetic systems, offering potential applications in advanced electromechanical devices.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"266 ","pages":"Article 116775"},"PeriodicalIF":5.3,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144166420","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}

引用次数: 0