Scripta Materialia最新文献_第6页

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

Giant elastocaloric temperature change and its cyclic stability in [001]-oriented Cu71Al17.5Mn11.5 single crystal

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-02-18 DOI: 10.1016/j.scriptamat.2025.116603

Zeming Fan , Xiang Li , Pengna Zhang , Qijie Zhai , Gang Wang , Qiao Li , Jian Liu

{"title":"Giant elastocaloric temperature change and its cyclic stability in [001]-oriented Cu71Al17.5Mn11.5 single crystal","authors":"Zeming Fan , Xiang Li , Pengna Zhang , Qijie Zhai , Gang Wang , Qiao Li , Jian Liu","doi":"10.1016/j.scriptamat.2025.116603","DOIUrl":"10.1016/j.scriptamat.2025.116603","url":null,"abstract":"<div><div>Environmentally friendly and energy-efficient elastocaloric cooling is a promising alternative to conventional vapor-compression technology. In this work, we observed a large superelastic strain of 9.4 % and a giant adiabatic temperature change (Δ<em>T</em><sub>ad</sub>) of 19.5 K in [001]-oriented Cu<sub>71</sub>Al<sub>17.5</sub>Mn<sub>11.5</sub> single crystals. The present Δ<em>T</em><sub>ad</sub> breaks the record in Cu-based elastocaloric alloys. As revealed using in-situ digital imaging correlation (DIC) technique, the uniaxial stress along the [001] direction promoted two martensitic correspondent variant pairs, leading to the non-uniform strain distribution and pronounced stress hysteresis. Upon 10<sup>4</sup> cycles, the Δ<em>T</em><sub>ad</sub> degraded from 19.5 to 2.1 K, with a cyclic degradation rate of 1.7 × 10<sup>−3</sup> K per cycle. Our study provides valuable insights into the selection of crystallographic orientation and fatigue resistance strategy for Cu-based elastocaloric alloys.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"261 ","pages":"Article 116603"},"PeriodicalIF":5.3,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143429039","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

Mediating coherent L12 phase precipitation via two-step aging in Si-modified A-286 alloy

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-02-17 DOI: 10.1016/j.scriptamat.2025.116611

Yuanfei Su , Shuzhan Zhang , Shengxuan Jiao , Xianbo Shi , Wei Yan , Shenghu Chen , Lijian Rong

引用次数: 0

A new perspective on the mechanical behavior of Inconel 617 at elevated temperatures for small modular reactors

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-02-17 DOI: 10.1016/j.scriptamat.2025.116605

Benhour Amirian, Asad Asad, Logan Krezan, Mostafa Yakout, James David Hogan

{"title":"A new perspective on the mechanical behavior of Inconel 617 at elevated temperatures for small modular reactors","authors":"Benhour Amirian, Asad Asad, Logan Krezan, Mostafa Yakout, James David Hogan","doi":"10.1016/j.scriptamat.2025.116605","DOIUrl":"10.1016/j.scriptamat.2025.116605","url":null,"abstract":"<div><div>This study investigates the temperature-dependent mechanical properties of Inconel 617, a nickel-based superalloy, for small modular reactor applications. The formation of the sigma phase, driven by high chromium content during prolonged high-temperature exposure, significantly impacts the alloy's strength, creep resistance, stress rupture life, and ductility. The transition temperature for sigma phase formation is predicted to be approximately <span><math><mn>1064</mn><mspace></mspace><mmultiscripts><mrow><mtext>C</mtext></mrow><mprescripts></mprescripts><none></none><mrow><mo>∘</mo></mrow></mmultiscripts></math></span>, with an uncertainty range between <span><math><mn>700</mn><mspace></mspace><mmultiscripts><mrow><mtext>C</mtext></mrow><mprescripts></mprescripts><none></none><mrow><mo>∘</mo></mrow></mmultiscripts></math></span> and <span><math><mn>1250</mn><mspace></mspace><mmultiscripts><mrow><mtext>C</mtext></mrow><mprescripts></mprescripts><none></none><mrow><mo>∘</mo></mrow></mmultiscripts></math></span>, confirmed through an uncertainty analysis of elemental composition. Chromium is identified as the primary element influencing sigma phase stability. Additionally, hot tearing susceptibility during solidification is assessed, revealing that a carbon content of 0.08 <em>wt</em>% minimizes the cracking susceptibility coefficient to 0.425, reducing the risk of solidification cracking. These findings offer critical insights for optimizing the composition and processing conditions of Inconel 617 in laser-directed energy deposition additive manufacturing.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"261 ","pages":"Article 116605"},"PeriodicalIF":5.3,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143429038","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

Delafossite-type CuGaO2 particulate photocathode synthesized via molten salt method for efficient and stable solar water splitting

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-02-16 DOI: 10.1016/j.scriptamat.2025.116602

H. Zhang , Y. Wang , Q.T. Liu , J. Gao , J.M. Li , Q.L. Liu , Z.-Y. Zhao , Y.B. Kuang

{"title":"Delafossite-type CuGaO2 particulate photocathode synthesized via molten salt method for efficient and stable solar water splitting","authors":"H. Zhang , Y. Wang , Q.T. Liu , J. Gao , J.M. Li , Q.L. Liu , Z.-Y. Zhao , Y.B. Kuang","doi":"10.1016/j.scriptamat.2025.116602","DOIUrl":"10.1016/j.scriptamat.2025.116602","url":null,"abstract":"<div><div>With the growing demand for renewable energy, photoelectrochemical (PEC) water splitting has emerged as a promising method for hydrogen production. CuGaO<sub>2</sub> is a highly attractive photocathode material due to its positive onset potential, high photovoltage, and ability to absorb visible light via valence band engineering. However, most CuGaO<sub>2</sub> materials suffer from poor crystallinity and oxygen vacancies, which hinder PEC performance. In this study, we synthesized micron-sized prism-shaped CuGaO<sub>2</sub> (MP-CGO) using a novel molten salt method. The MP-CGO photocathode achieved a photocurrent density of 1.2 mA cm<sup>−2</sup> with stability over 6 h, surpassing the performance of materials prepared by hydrothermal methods. This improvement is attributed to enhanced crystallinity and the elimination of defects, which increase carrier concentration, accelerate charge transport, and improve onset potential. Furthermore, MP-CGO, when loaded with Pt cocatalysts, efficiently facilitated hydrogen production. These findings lay a strong foundation for the development of CuGaO<sub>2</sub>-based and ternary oxide photocathodes.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"261 ","pages":"Article 116602"},"PeriodicalIF":5.3,"publicationDate":"2025-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143422346","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