Scripta Materialia最新文献_第5页

The probabilistic distribution model of the γ′ phase in nickel-based superalloys

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-02-26 DOI: 10.1016/j.scriptamat.2025.116580

Dingge Fan , Jian Zhang , Xiongxi Zhao , Hao Jiang , Jiantang Jiang , Liang Zhen

引用次数: 0

Enhancement of electrostrictive coefficient Q33 at ferroelectric MPB and its contribution to the maximized piezoelectric coefficient d33

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-02-26 DOI: 10.1016/j.scriptamat.2025.116620

Zhengkai Hong , Songjie Ren , Ben Tian , Wangtu Huo , Sen Yang , Xiaoqin Ke

{"title":"Enhancement of electrostrictive coefficient Q33 at ferroelectric MPB and its contribution to the maximized piezoelectric coefficient d33","authors":"Zhengkai Hong , Songjie Ren , Ben Tian , Wangtu Huo , Sen Yang , Xiaoqin Ke","doi":"10.1016/j.scriptamat.2025.116620","DOIUrl":"10.1016/j.scriptamat.2025.116620","url":null,"abstract":"<div><div>High piezoelectric performance is strongly desired to meet the ever-increasing demands of high-precision actuators and sensors. Ferroelectric morphotropic phase boundary (MPB) is known to exhibit high piezoelectric coefficient and the enhancement of piezoelectricity at MPB is generally ascribed to the maximum extrinsic piezoelectric contributions originating from the easiness of polarization switching. Here we show that in addition to the maximum extrinsic contributions, the highest electrostrictive coefficient <em>Q</em><sub>33</sub> at the MPB which determines how much strain is gained through polarization change, leads to the enhancement of intrinsic piezoelectric coefficient and in turn contributes to the maximized <em>d</em><sub>33</sub> at the MPB of the lead-free Ba(Zr<sub>0.25</sub>Ti<sub>0.75</sub>)O<sub>3</sub>-<em>x</em>(Ba<sub>0.7</sub>Ca<sub>0.3</sub>)TiO<sub>3</sub> system. The highest <em>Q</em><sub>33</sub> is ascribed to the small 4<sup>th</sup> order Landau coefficient at the MPB as found by a revised Landau model. This work helps clarify the origin of high piezoelectric coefficient <em>d</em><sub>33</sub> at ferroelectric MPB. It also suggests a general method to achieve high <em>Q</em><sub>33</sub>.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"261 ","pages":"Article 116620"},"PeriodicalIF":5.3,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143488291","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

Peritectic and incongruent equilibrium during surface electro-oxidation of C-276 Hastelloy for rapid fabrication of urea-assisted water-splitting anode

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-02-25 DOI: 10.1016/j.scriptamat.2025.116623

Li Lin , Jia Yu , Panpan Lv, Andong Song, Lijia Chen

{"title":"Peritectic and incongruent equilibrium during surface electro-oxidation of C-276 Hastelloy for rapid fabrication of urea-assisted water-splitting anode","authors":"Li Lin , Jia Yu , Panpan Lv, Andong Song, Lijia Chen","doi":"10.1016/j.scriptamat.2025.116623","DOIUrl":"10.1016/j.scriptamat.2025.116623","url":null,"abstract":"<div><div>An anodic hetero-structure combining both electrocatalysis and electricity-conduction was obtained by simple surface electro-oxidation of C-276 Hastelloy to facilitate urea oxidation reaction (UOR) for water-splitting. The inactive and insulative Ni(OH)<sub>2</sub>, as the direct evidence of poisoning effect, was completely inhibited by the peritectic precipitation of NiFe<sub>2</sub>O<sub>4</sub>, which is identified as the pre-catalyst for UOR under the indirect or regeneration mechanism. The core-shell structure composed of the inner Ni(OH)<sub>2</sub>/NiCO<sub>3</sub> and the outer NiFe<sub>2</sub>O<sub>4</sub> suffered the subsequent incongruent decomposition of surface layer to form the more stable and active Ni-based oxyhydroxides as the real-time electrocatalyst. Cr and Mo elements were found to be converted easily into CrOOH and MoO<sub>3</sub> or MoC with stable relative ratios during surface electro-oxidation. The outstanding UOR performance of as-prepared hetero-structure is related to the predominance of NiOOH and the elimination of poisoning effect, as a result of the simultaneous equilibrium among all UOR-enhancing species.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"261 ","pages":"Article 116623"},"PeriodicalIF":5.3,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143480522","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

Outstanding shear resistance in a low-density refractory Ti3NbVAl high-entropy alloy subjected to dynamic loading

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-02-25 DOI: 10.1016/j.scriptamat.2025.116610

Na Yan , Shiteng Zhao , Zezhou Li , Rui Feng , Peter․ K․ Liaw , Marc André Meyers

{"title":"Outstanding shear resistance in a low-density refractory Ti3NbVAl high-entropy alloy subjected to dynamic loading","authors":"Na Yan , Shiteng Zhao , Zezhou Li , Rui Feng , Peter․ K․ Liaw , Marc André Meyers","doi":"10.1016/j.scriptamat.2025.116610","DOIUrl":"10.1016/j.scriptamat.2025.116610","url":null,"abstract":"<div><div>The mechanical property of a low-density refractory Ti<sub>3</sub>NbVAl high-entropy alloy (HEA) with an ordered B<sub>2</sub> structure is investigated in the dynamic regime. The yield strength increased from 751 MPa at a strain rate of 10<sup>–3</sup> s<sup>-1</sup> to 1,400 MPa at a strain rate of ∼ 10<sup>3</sup> s<sup>-1</sup>, indicating an extraordinary strain-rate-hardening capability. Dynamic compression of the hat-shaped sample suggests that it also exhibits excellent shear resistance under a deviatoric strain rate of 10<sup>5</sup> s<sup>-1</sup>, which resists the adiabatic shear-band formation at a large imposed shear strain of ∼16. The microstructure inside the shear bands shows that a severe grain refinement combined with a B<sub>2</sub> to body-centered-cubic (BCC) crystal structure transition occurred during shear localization. Our results demonstrate that the Ti<sub>3</sub>NbVAl HEA exhibits great toughness under dynamic-loading conditions. An excellent load-bearing capacity under high-strain rate loading conditions leads to its promising applications in aerospace, transportation, and energy.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"261 ","pages":"Article 116610"},"PeriodicalIF":5.3,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143480521","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

Electric charges as an apparent governing parameter for electron induced stress relaxation in amorphous silica micropillars

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-02-25 DOI: 10.1016/j.scriptamat.2025.116628

Morgan Rusinowicz , Sergio Sao-Joao , Matthieu Bourguignon , Gustavo Rosales-Sosa , Yoshinari Kato , Fabien Volpi , Etienne Barthel , Guillaume Kermouche

引用次数: 0

Opposite effects of doping on nanoindentation pop-in phenomena in InAs and Ge crystals

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-02-24 DOI: 10.1016/j.scriptamat.2025.116607

Mingqiang Li , Jun Li , Kun Luo , Shuo Yang , Tobin Filleter , Qi An , Yu Zou

引用次数: 0

A novel copper matrix composite suitable for traditional casting by designing in-situ formed high-entropy diboride particles

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-02-22 DOI: 10.1016/j.scriptamat.2025.116622

Xingde Zhang , Yihui Jiang , Tian Yang , Haorui Zhong , Fei Cao , Pengtao Li , Yanfang Wang , Wei Zhou , Di Huang , Yihang Pang , Shuhua Liang

{"title":"A novel copper matrix composite suitable for traditional casting by designing in-situ formed high-entropy diboride particles","authors":"Xingde Zhang , Yihui Jiang , Tian Yang , Haorui Zhong , Fei Cao , Pengtao Li , Yanfang Wang , Wei Zhou , Di Huang , Yihang Pang , Shuhua Liang","doi":"10.1016/j.scriptamat.2025.116622","DOIUrl":"10.1016/j.scriptamat.2025.116622","url":null,"abstract":"<div><div>Conductive ceramics reinforced copper matrix composites have made a breakthrough in the research of high strength and high conductivity, but their application is limited due to the advanced preparation technology and manufacturing cost. Casting technology, as the most widely preparation technology, is relatively less used in the composites due to the macro-segregation caused by the large difference in density and the micro-agglomeration caused by the poor interfacial wettability. In this work, a novel of (TiZrHfCrTa)B<sub>2</sub> particles with a density close to the matrix was actively designed to avoid the macro-segregation. Meanwhile, the interfacial transition layer formed by Cr segregation plays a role of interfacial modification, which improved the interfacial wettability and avoided serious micro-agglomeration. Finally, a novel composite with high strength, high conductivity and more suitable for the traditional casting was prepared, which is expected to produce more economical and excellent composites.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"261 ","pages":"Article 116622"},"PeriodicalIF":5.3,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143471375","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

Severe plastic deformation promoted simultaneous enhancement in strength and ductility of multilayer MXene/Ag matrix composites

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-02-22 DOI: 10.1016/j.scriptamat.2025.116612

Yunsong Xu , Weiwei Zhou , Li-Fu Yi , Itsuki Kubo , Zhenxing Zhou , Zhong-Chun Chen , Naoyuki Nomura

{"title":"Severe plastic deformation promoted simultaneous enhancement in strength and ductility of multilayer MXene/Ag matrix composites","authors":"Yunsong Xu , Weiwei Zhou , Li-Fu Yi , Itsuki Kubo , Zhenxing Zhou , Zhong-Chun Chen , Naoyuki Nomura","doi":"10.1016/j.scriptamat.2025.116612","DOIUrl":"10.1016/j.scriptamat.2025.116612","url":null,"abstract":"<div><div>The insufficient mechanical performance of Ag poses a critical challenge for its application as an electrical contact material. In this study, a strategy was developed that employed severe plastic deformation to design a strong and ductile 3 vol% MXene/Ag matrix composite. Multilayer MXene was randomly incorporated into an Ag matrix via a heteroagglomeration process and spark plasma sintering. After hot extrusion, the MXene became preferentially oriented along a single direction owing to the metallic plastic flow. Moreover, the high shear stress exerted by the Ag matrix facilitated the exfoliation of the accordion-like MXene, resulting in a reduced thickness. Consequently, the tensile strength and elongation of the hot-extruded MXene/Ag composite improved by 59 % and 676 %, respectively, primarily due to the prevention of delamination between adjacent accordion flakes and the enhanced strengthening contribution of MXene. This study demonstrated the fabrication of high-performance Ag-based composites by leveraging the exceptional properties of two-dimensional MXene and the intrinsic features of the consolidation process.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"261 ","pages":"Article 116612"},"PeriodicalIF":5.3,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143465294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Wide-temperature superelasticity in a dual-phase Nb-doped TiNiCuHf high entropy strain glass alloy

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-02-20 DOI: 10.1016/j.scriptamat.2025.116609

Yan Zhang, Pengfei Dang, Yumei Zhou, Xiangdong Ding, Jun Sun, Dezhen Xue

{"title":"Wide-temperature superelasticity in a dual-phase Nb-doped TiNiCuHf high entropy strain glass alloy","authors":"Yan Zhang, Pengfei Dang, Yumei Zhou, Xiangdong Ding, Jun Sun, Dezhen Xue","doi":"10.1016/j.scriptamat.2025.116609","DOIUrl":"10.1016/j.scriptamat.2025.116609","url":null,"abstract":"<div><div>We report on a Nb-doped dual-phase high entropy strain glass alloy, Ti<sub>(40-x/2)</sub>Ni<sub>(40-x/2)</sub>Cu<sub>10</sub>Hf<sub>10</sub>Nb<sub>x</sub>, specifically designed to demonstrate superelasticity in a wide-temperature range. The precipitation of Nb-rich β-Nb phase result in the increase of Ni-site/Ti-site atomic ratio in the matrix, which gives rise to the decrease of martensitic transformation with increasing Nb content (<em>x</em>). When <em>x</em> exceeds 12.5 %, the martensitic transformation is completely suppressed and it undergoes a strain glass transition. The enhanced austenite stability of strain glass alloy effectively decreases the lower temperature limit of superelasticity. Furthermore, the severe lattice distortion mechanically strengthened the above high entropy strain glass alloy, which increases the higher temperature limit of superelasticity. Thus, the Ti<sub>32.5</sub>Ni<sub>32.5</sub>Cu<sub>10</sub>Hf<sub>10</sub>Nb<sub>15</sub> strain glass alloy exhibits superelasticity across a wide temperature range from -125 °C to 50 °C with recoverable strain of 4 %. The designed TiNiCuHfNb high entropy strain glass alloys are promising for outer-space explorations with large temperature variations.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"261 ","pages":"Article 116609"},"PeriodicalIF":5.3,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143454912","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

Role of nanoscale ordering transformation in the design of a strong quadruplex lightweight steel

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-02-19 DOI: 10.1016/j.scriptamat.2025.116600

Yi-Hsuan Sun , Po-Han Chiu , Chuan Tsai , Jui-Fan Tu , Hung-Wei Yen

{"title":"Role of nanoscale ordering transformation in the design of a strong quadruplex lightweight steel","authors":"Yi-Hsuan Sun , Po-Han Chiu , Chuan Tsai , Jui-Fan Tu , Hung-Wei Yen","doi":"10.1016/j.scriptamat.2025.116600","DOIUrl":"10.1016/j.scriptamat.2025.116600","url":null,"abstract":"<div><div>This study examines the impacts of ordered nanostructures on mechanical properties in a newly designed quadruplex lightweight steel. Aging the D0<sub>3</sub>-strengthened duplex lightweight steel drives two ordering reactions: the precipitation of κ-carbides in austenite and the formation of D0<sub>3</sub>/B2 intermetallic domains. The steel exhibits excellent mechanical properties, with a yield strength of 1.5 GPa, a tensile strength of 1.7 GPa, and a total elongation of 15 %. Austenite strengthening from κ-carbides and D0<sub>3</sub> softening from B2 intermetallic compounds reduce deformation incompatibility. Moreover, deformation twins are suppressed by κ-carbides. A moderate strain hardening relies on microband-induced plasticity during uniform deformation. In contrast, the very high flow stress overcomes the restriction by κ-carbides and triggers deformation twins during post-necking deformation, improving the post-elongation. This study discloses transformation paths toward the design of strong and ductile lightweight steels, especially with improved post-elongation.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"261 ","pages":"Article 116600"},"PeriodicalIF":5.3,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143436836","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