Scripta Materialia最新文献_第4页

Strongly enhancing the energy storage properties and stability of amorphous BaTiO3 thin films via ions doping 离子掺杂可显著提高非晶BaTiO3薄膜的储能性能和稳定性

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-05-07 DOI: 10.1016/j.scriptamat.2025.116751

Ruiling Chang , Zhonghua Yao , Yutong Xing , Jun Wang , Hua Hao , Minghe Cao , Hanxing Liu

{"title":"Strongly enhancing the energy storage properties and stability of amorphous BaTiO3 thin films via ions doping","authors":"Ruiling Chang , Zhonghua Yao , Yutong Xing , Jun Wang , Hua Hao , Minghe Cao , Hanxing Liu","doi":"10.1016/j.scriptamat.2025.116751","DOIUrl":"10.1016/j.scriptamat.2025.116751","url":null,"abstract":"<div><div>Amorphous thin films with high power density and breakdown strength satisfy the needs of advanced power electronic systems. Nonetheless, improving the energy storage density of amorphous films is critical for addressing the growing demand for electricity. We apply high spontaneous polarization BaTiO<sub>3</sub> as the main component to make (1-x)Ba(Ti<sub>0.99</sub>Mn<sub>0.02</sub>)O<sub>3</sub>-xBiFeO<sub>3</sub>((1-x)BTM-xBF) thin films. Doping BiFeO<sub>3</sub> (BF) synergistically boosts polarization. The introduction of amorphous phases and Mn ions enhances the breakdown strength. The results demonstrate that, at <em>x</em> = 0.10, the film can achieve both a high efficiency of 80.3 % and an excellent energy storage density of 111.3 J cm<sup>-3</sup>. Moreover, the film has a strong thermal stability within a broad range of 20 to 160 °C, as well as the cycling reliability is as high as 10<sup>5</sup> times. The present study offers a practical approach to develop film capacitors with outstanding energy storage capabilities.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"265 ","pages":"Article 116751"},"PeriodicalIF":5.3,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143912585","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

Thermodynamic investigation of Guinier–Preston zone formation in the Al–Cu binary system Al-Cu二元体系中Guinier-Preston区形成的热力学研究

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-05-06 DOI: 10.1016/j.scriptamat.2025.116746

Takao Suzuki , Takahiro Yabe , Masanori Enoki , Hiroshi Ohtani

引用次数: 0

Analysis of correlations between intrinsic ductility and electronic density of states in refractory alloys 耐火合金本征塑性与态电子密度的相关性分析

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-05-05 DOI: 10.1016/j.scriptamat.2025.116728

Amit Samanta , Michael Widom , Joel Berry , Aurélien Perron , Joseph McKeown

{"title":"Analysis of correlations between intrinsic ductility and electronic density of states in refractory alloys","authors":"Amit Samanta , Michael Widom , Joel Berry , Aurélien Perron , Joseph McKeown","doi":"10.1016/j.scriptamat.2025.116728","DOIUrl":"10.1016/j.scriptamat.2025.116728","url":null,"abstract":"<div><div>High entropy alloys (HEAs) correspond to a new and emerging class of materials that allows us to explore a large composition space to tune mechanical strength and thermal stability. Therefore, to design better alloys, it is important to scan the high-dimensional space of chemistry, composition and temperature. To facilitate this search, we present a method to screen intrinsically ductile body centered cubic (BCC) refractory alloys from electronic structure calculations by using the density of states (DOS) at the Fermi level, <span><math><mi>g</mi><mrow><mo>(</mo><msub><mrow><mi>μ</mi></mrow><mrow><mi>F</mi></mrow></msub><mo>)</mo></mrow></math></span>. This correlation between intrinsic ductility and <span><math><mi>g</mi><mrow><mo>(</mo><msub><mrow><mi>μ</mi></mrow><mrow><mi>F</mi></mrow></msub><mo>)</mo></mrow></math></span> is tested by analyzing group V (V, Nb, Ta) and VI (Mo, W) refractory metals, binary alloys, such as W-Nb, W-V, Mo-Nb and Mo-V, and refractory alloys for which experimental stress-strain measurements are available. In addition, we perform a high-throughput exploration of the entire composition space of a recently proposed alloy system, CrMoNbV, and identify compositions that exhibit high intrinsic ductility.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"265 ","pages":"Article 116728"},"PeriodicalIF":5.3,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143903961","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

Zr35Ti35Nb20V5Al5 refractory high entropy alloy designed for low-density, high specific strength and ductility Zr35Ti35Nb20V5Al5耐火高熵合金具有低密度、高比强度和延展性

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-05-05 DOI: 10.1016/j.scriptamat.2025.116733

Cameron B. Yousefian , Jóhan P. Magnussen , Matthew J. Lloyd , Kan Ma , Hannah Wilcox , Alexandra J. Cackett , Alexander J. Knowles

{"title":"Zr35Ti35Nb20V5Al5 refractory high entropy alloy designed for low-density, high specific strength and ductility","authors":"Cameron B. Yousefian , Jóhan P. Magnussen , Matthew J. Lloyd , Kan Ma , Hannah Wilcox , Alexandra J. Cackett , Alexander J. Knowles","doi":"10.1016/j.scriptamat.2025.116733","DOIUrl":"10.1016/j.scriptamat.2025.116733","url":null,"abstract":"<div><div>Refractory high entropy alloys have gained significant interest over the past decade as promising candidates for high-strength applications, particularly at high temperatures. However, achieving ductility and workability at room temperature remains a challenge for large-scale manufacturing and applications. This study explores the design and characterisation of a novel RHEA with low density, high ductility, and high strength at room temperature. High-throughput screening and experimental validation identified a non-equiatomic composition, Zr<sub>35</sub>Ti<sub>35</sub>Nb<sub>20</sub>V<sub>5</sub>Al<sub>5</sub> (at%), which exhibits a room-temperature yield strength of 1030 MPa, 11% tensile strain to failure, and a low density of 6 g/cm<sup>3</sup>. The alloy's grain size was refined to <20 μm through rolling and recrystallisation, bypassing traditional high-temperature homogenisation while avoiding microsegregation. The tailored Zr<sub>35</sub>Ti<sub>35</sub>Nb<sub>20</sub>V<sub>5</sub>Al<sub>5</sub> RHEA demonstrates a new design approach and processing route, opening applications in next-generation nuclear and aerospace technologies.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"265 ","pages":"Article 116733"},"PeriodicalIF":5.3,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143903960","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

In-situ investigations on the dynamic transformation in steel near the Ae3 temperature 钢在Ae3温度附近动态转变的现场研究

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-05-05 DOI: 10.1016/j.scriptamat.2025.116737

Arina DeBoer , Imed-Eddine Benrabah , Cécile Rampelberg , Guillaume Geandier , Hatem Zurob

引用次数: 0

Enhancing soft-magnetic performance of Fe50Ni26Co20Cr4 medium-entropy alloys through microstructure engineering in laser powder bed fusion 激光粉末床熔合中熵Fe50Ni26Co20Cr4合金的微结构工程增强软磁性能

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-05-01 DOI: 10.1016/j.scriptamat.2025.116736

Pengcheng Zhang, Lixue Liu, Ruyi Huang, Bailing An, Cheng Zhang, Lin Liu

引用次数: 0

Nano-Ti3C2 as an excellent anode material for lithium storage 纳米ti3c2是一种优良的锂存储负极材料

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-05-01 DOI: 10.1016/j.scriptamat.2025.116729

Tingting Xu , Xiaolong Li , Chao Duan , Yawei Li , Haixiang Huang , Bogu Liu , Xiaohong Chen , Hong Zeng , Ying Wu

引用次数: 0

High-temperature deformation of Ni-based superalloy and recrystallization prevention by recovery 镍基高温合金的高温变形及回收防止再结晶

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-04-30 DOI: 10.1016/j.scriptamat.2025.116732

Hongfei Zhang , Kai Chen , Wolfgang Pantleon , Hao Shen , Evan Ma

{"title":"High-temperature deformation of Ni-based superalloy and recrystallization prevention by recovery","authors":"Hongfei Zhang , Kai Chen , Wolfgang Pantleon , Hao Shen , Evan Ma","doi":"10.1016/j.scriptamat.2025.116732","DOIUrl":"10.1016/j.scriptamat.2025.116732","url":null,"abstract":"<div><div>Achieving high recoverability is essential to maintaining the structural integrity for Ni-based superalloy single crystals. However, the recovery and recrystallization mechanisms in Ni-based superalloys after high-temperature deformation are still discussed controversially. This study reveals that for plastic strains of up to 3.2 %, dislocations carry plasticity in superalloy single crystals compressed at high temperatures, and that both dislocations as well as superlattice stacking faults can be easily annealed out by recovery treatment to preempt recrystallization. This means that the recoverability of Ni-based superalloy single crystals can be increased by more than twice compared to previous reports. For larger plastic strains, deformation twins form. They block moving dislocations which assemble in new boundaries that eventually trigger dynamic recrystallization. Upon subsequent heat treatment, such newly recrystallized grains grow rapidly further, resulting in a coarse polycrystalline microstructure. Consequently, avoiding deformation twins becomes the key to maintaining the single-crystalline microstructure.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"265 ","pages":"Article 116732"},"PeriodicalIF":5.3,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143886455","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

Imaging the atomic configuration of defects in laves phase MgNi2 using 4D-STEM 利用4D-STEM技术对叶片相MgNi2缺陷的原子构型进行成像

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-04-30 DOI: 10.1016/j.scriptamat.2025.116719

Jiaxin Li , Min Zhang , Chunchen Zhang , Jiuhui Han

{"title":"Imaging the atomic configuration of defects in laves phase MgNi2 using 4D-STEM","authors":"Jiaxin Li , Min Zhang , Chunchen Zhang , Jiuhui Han","doi":"10.1016/j.scriptamat.2025.116719","DOIUrl":"10.1016/j.scriptamat.2025.116719","url":null,"abstract":"<div><div>Laves phases are promising candidates for high-temperature structural materials, with their mechanical properties strongly influenced by defect structures. In this study, the atomic configurations of defects in the Laves phase MgNi<sub>2</sub> were systematically investigated using four-dimensional scanning transmission electron microscopy (4D-STEM). Combined multislice simulations and experimental results validated the robustness of Center-of-Mass (CoM) imaging based on 4D-STEM for simultaneously resolving both heavy and light elements in MgNi<sub>2</sub> under varying sample and instrument parameters. We conducted a detailed analysis of planar faults and dislocations in MgNi<sub>2</sub> using 4D-STEM. Our findings revealed that the hexagonal planar faults, formed via relative sliding of adjacent regions, are characterized by nickel deficiency. Additionally, the atomic structure of dislocations in regions containing non-basal stacking faults suggests a synchroshear deformation mechanism. These results demonstrate the effectiveness of 4D-STEM in probing complex defect structures in intermetallic materials, offering critical insights into their deformation behavior.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"265 ","pages":"Article 116719"},"PeriodicalIF":5.3,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143886250","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

Multicomponent nanogranular FCC solid solution saturated with boron formed by full crystallization of high-entropy amorphous alloy 高熵非晶态合金充分结晶形成含硼的多组分纳米颗粒FCC固溶体

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-04-30 DOI: 10.1016/j.scriptamat.2025.116725

A. Bazlov , E. Ubyivovk , N. Tabachkova , E. Zanaeva , M. Parkhomenko , A. Rodin , T. Sviridova , A. Inoue

{"title":"Multicomponent nanogranular FCC solid solution saturated with boron formed by full crystallization of high-entropy amorphous alloy","authors":"A. Bazlov , E. Ubyivovk , N. Tabachkova , E. Zanaeva , M. Parkhomenko , A. Rodin , T. Sviridova , A. Inoue","doi":"10.1016/j.scriptamat.2025.116725","DOIUrl":"10.1016/j.scriptamat.2025.116725","url":null,"abstract":"<div><div>The paper presents the formation of multicomponent nanogranular FCC supersaturated solid solution containing a large amount of boron (B) in coexistent with small amount of nanoscale BCC phase after full crystallization of an amorphous (Fe<sub>0.25</sub>Co<sub>0.25</sub>Ni<sub>0.25</sub>Cr<sub>0.125</sub>V<sub>0.125</sub>)<sub>83</sub>B<sub>17</sub> alloy. The metastable FCC phase remains unchanged at temperatures up to 1073 K. The unusual formation of an FCC single phase from the residual amorphous phase is presumably due to the suppression of long-range redistribution among the constituent elements with strong bonding atomic pairs and suitable atomic size differences, which can be regarded as a high entropy effect. With further increasing temperature, the solid solution decomposes to FCC + Me<sub>3</sub>B<sub>2</sub>. It is notable that the formation of only an FCC solid solution saturated with B from the residual amorphous phase is the first in as-cast and rapid solidification states.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"265 ","pages":"Article 116725"},"PeriodicalIF":5.3,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143891562","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