Scripta Materialia最新文献_第10页

Boosting energy storage at moderate fields in Sr₀.₇Bi₀.₂TiO₃ weakly polar relaxor via BiNi2/3Ta1/3O₃-induced ferroelectric-paraelectric composite structure 助推Sr 0 .₇Bi 0中等规模油田储能。通过bini2 / 3ta1 / 30o₃诱导的铁电-准电复合结构的2 TiO₃弱极性弛豫剂

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2026-03-01 Epub Date: 2025-11-15 DOI: 10.1016/j.scriptamat.2025.117101

Yuming Mao , Jingji Zhang , Mo Chen , Min Fang , Ning Yan , Zhihao Lou , Yun Zhou

{"title":"Boosting energy storage at moderate fields in Sr₀.₇Bi₀.₂TiO₃ weakly polar relaxor via BiNi2/3Ta1/3O₃-induced ferroelectric-paraelectric composite structure","authors":"Yuming Mao , Jingji Zhang , Mo Chen , Min Fang , Ning Yan , Zhihao Lou , Yun Zhou","doi":"10.1016/j.scriptamat.2025.117101","DOIUrl":"10.1016/j.scriptamat.2025.117101","url":null,"abstract":"<div><div>The weakly polar relaxor Sr₀.₇Bi₀.₂TiO₃ is renowned for its exceptional energy efficiency but suffers from low maximum polarization. To overcome this trade-off, we introduce BiNi<sub>2/3</sub>Ta<sub>1/3</sub>O₃ to design a composite structure of coexisting ferroelectric A<sub>4</sub>B<sub>3</sub>O<sub>12</sub> and paraelectric ABO₃ phases. With increasing dopant, the A<sub>4</sub>B<sub>3</sub>O<sub>12</sub> phase is progressively replaced by paraelectric ABO₃ and pyrochlore Bi<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub>, raising the phase-transition temperature. The optimal composition comprises 70.67% <em>P</em>4/<em>mbm</em> ABO₃, 28.49% <em>Fmmm</em> A<sub>4</sub>B<sub>3</sub>O<sub>12</sub>, 0.75% <em>Fd</em>3<em>m</em> Bi<sub>2</sub>Ti<sub>2</sub>O<sub>7</sub>, and 0.09% <em>Pnna</em> BiTaO<sub>4</sub>, forming polar clusters and a coherent boundary between the ABO₃ and A<sub>4</sub>B<sub>3</sub>O<sub>12</sub> phases. This yields a high energy storage density of 5.12 J cm<sup>-3</sup> an ultrahigh efficiency of 97.13% at a high breakdown strength of 460 kV cm<sup>-1</sup><strong>,</strong> together with a figure of merit of 175.90 J cm<sup>-3</sup> and environment-independent stability. These results establish the composite as a highly promising candidate for high-performance dielectric energy-storage devices.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"273 ","pages":"Article 117101"},"PeriodicalIF":5.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145527331","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

Temperature-dependent deformation mechanisms and transition of fracture behaviors in polycrystalline Sn 多晶锡的温度变形机制及断裂行为转变

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2026-03-01 Epub Date: 2025-11-24 DOI: 10.1016/j.scriptamat.2025.117112

Xiaoliang Ji , Yiping Xia , Jian Lin , Longxiao Huang , Yishu Wang , Fu Guo

{"title":"Temperature-dependent deformation mechanisms and transition of fracture behaviors in polycrystalline Sn","authors":"Xiaoliang Ji , Yiping Xia , Jian Lin , Longxiao Huang , Yishu Wang , Fu Guo","doi":"10.1016/j.scriptamat.2025.117112","DOIUrl":"10.1016/j.scriptamat.2025.117112","url":null,"abstract":"<div><div>The low-temperature embrittlement of β-Sn poses a critical reliability challenge for Sn-based solders in cryogenic electronics. In this work, a comparative investigation was conducted by quasi-in-situ EBSD at 77 K and 293 K to elucidate the deformation mechanisms accounting for the ductile-to-brittle transition of β-Sn. It is found that the deformation mechanisms shift from dislocation-dominated to twinning-dominated as the temperature decreases. Dynamic recovery and continuous dynamic recrystallization were suppressed at 77 K, while discontinuous dynamic recrystallization occurred around the crack propagation path. The intergranular fracture at cryogenic temperature could be attributed to the failure of twin-twin transmission across grain boundaries. Molecular dynamics simulations further verified that the twin-twin transmission could accommodate the local strain, correlating its failure with the intergranular cracking. These findings offer new insights into the cryogenic brittleness of β-Sn, helping design Sn-based solders with enhanced cryogenic reliability.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"273 ","pages":"Article 117112"},"PeriodicalIF":5.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145621340","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

Distinct impacts of hydrogen and carbon on thermally activated dislocation motion in Fe-Cr-Ni austenitic steel 氢和碳对Fe-Cr-Ni奥氏体钢热激活位错运动的显著影响

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2026-03-01 Epub Date: 2025-11-22 DOI: 10.1016/j.scriptamat.2025.117111

Haruki Nishida , Yuhei Ogawa , Akinobu Shibata

引用次数: 0

Thermoelectric properties of semiconducting approximant crystals in the Al–Ge–Ru system Al-Ge-Ru体系中半导体近似晶体的热电性质

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2026-03-01 Epub Date: 2025-11-17 DOI: 10.1016/j.scriptamat.2025.117100

Yutaka Iwasaki , Yasuhiro Niwa , Koichi Kitahara , Kaoru Kimura , Ryuji Tamura

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Microstructural transition across interlayer ultrasonic impact peened interfaces in hybrid additive manufacturing of 316L stainless steel 混合增材制造316L不锈钢层间超声冲击强化界面的微观组织转变

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2026-03-01 Epub Date: 2025-11-19 DOI: 10.1016/j.scriptamat.2025.117107

Kossi Loic M. Avegnon , Ronan Henry , Michael Sealy , Fabrice Barbe , Benoit Vieille

{"title":"Microstructural transition across interlayer ultrasonic impact peened interfaces in hybrid additive manufacturing of 316L stainless steel","authors":"Kossi Loic M. Avegnon , Ronan Henry , Michael Sealy , Fabrice Barbe , Benoit Vieille","doi":"10.1016/j.scriptamat.2025.117107","DOIUrl":"10.1016/j.scriptamat.2025.117107","url":null,"abstract":"<div><div>While additive manufacturing generally involves building components layer by layer, hybrid additive manufacturing in this context refers to a process that combines printing with interlayer cold working. Although cold working induces plastic deformation, the subsequent microstructural evolution in the newly printed layers is largely dictated by the thermal input of the printing process. Hence, the objective of this study was to characterize the microstructural evolution at the interface of interlayer ultrasonic impact peened 316 L stainless steel manufactured by laser powder bed fusion. Ultrasonic treatment was applied intensively over five consecutive layers, and the resulting interface was mapped through microstructural analysis and hardness testing across multiple length scales. The results revealed a succession from highly deformed grains in treated regions to recrystallized equiaxed structures, and finally remelted columnar features in the subsequent layers. This transition was driven by the rapid cooling rate and steep thermal gradient of the printing process.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"273 ","pages":"Article 117107"},"PeriodicalIF":5.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145577408","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

RECIPIENTS OF THE 2024 ACTA MATERIALIA, INC. STUDENT AWARDS 2024年材料学报的接受者，inc。学生奖

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2026-03-01 Epub Date: 2025-11-21 DOI: 10.1016/j.scriptamat.2025.117091

引用次数: 0

Direct atomic observation of large-angle lattice rotation in Cu3Pd Cu3Pd中大角度晶格旋转的直接原子观察

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2026-03-01 Epub Date: 2025-11-13 DOI: 10.1016/j.scriptamat.2025.117099

Yujie Song , Huichao Duan , Tao Zheng , Qianning Dai , Kui Du

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Acta Biomaterialia Gold Medal 2026 生物材料学报金牌2026

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2026-03-01 Epub Date: 2025-11-06 DOI: 10.1016/j.scriptamat.2025.117031

引用次数: 0

Acta Materialia Gold Medal 2026 《材料学报》第2026期

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2026-03-01 Epub Date: 2025-11-05 DOI: 10.1016/j.scriptamat.2025.117029

引用次数: 0

Pressure-induced phase transitions of amorphous silicon nanoparticles 非晶硅纳米颗粒的压力诱导相变

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2026-03-01 Epub Date: 2025-11-21 DOI: 10.1016/j.scriptamat.2025.117106

Haotian Zhu , Shuai Liu , Di Peng , Fujun Lan , Yuxin Liu , Guangrun Zhong , Hongbo Lou , Qiaoshi Zeng , Zhidan Zeng

{"title":"Pressure-induced phase transitions of amorphous silicon nanoparticles","authors":"Haotian Zhu , Shuai Liu , Di Peng , Fujun Lan , Yuxin Liu , Guangrun Zhong , Hongbo Lou , Qiaoshi Zeng , Zhidan Zeng","doi":"10.1016/j.scriptamat.2025.117106","DOIUrl":"10.1016/j.scriptamat.2025.117106","url":null,"abstract":"<div><div>Amorphous silicon (a-Si) plays a significant role in various modern technologies. Therefore, understanding its stability is of both fundamental and technological importance. While pressure-induced phase transitions in a-Si have been extensively studied, the effect of domain size remains unclear. In this study, we synthesized amorphous silicon nanoparticles (a-SiNPs) with an average size of ∼9 nm and investigated their pressure-induced phase transitions using <em>in situ</em> high-pressure Raman spectroscopy and synchrotron X-ray diffraction. These results reveal that a-SiNPs transform into β-Sn phase at ∼10.8 GPa, rather than a previously reported high-density amorphous phase. Upon decompression, the β-Sn phase reverts to a-Si. The phase transition pathway and transition pressure are similar to those observed in bulk a-Si, indicating that domain size is not a determining factor for inducing polyamorphism in a-Si. These findings bring new insights into the thermodynamics and kinetics of phase transitions in a-SiNPs and provide experimental constraints for theoretical studies of a-Si.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"273 ","pages":"Article 117106"},"PeriodicalIF":5.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145577410","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