Scripta Materialia最新文献_第9页

Atomic topology of highly mobile Type I and supermobile Type II twin boundaries in 10M Ni–Mn–Ga single crystal 10M Ni-Mn-Ga单晶高迁移型I型和超迁移型II型孪晶界的原子拓扑结构

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2025-08-12 DOI: 10.1016/j.scriptamat.2025.116920

Ladislav Straka , Marek Vronka , Jan Maňák , Petr Veřtát , Hanuš Seiner , Oleg Heczko

引用次数: 0

A new insight into porosity suppression in additive manufacturing of TiC nanoparticle-enabled aluminum alloys 纳米TiC增强铝合金增材制造中孔隙率抑制的新见解

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2025-08-11 DOI: 10.1016/j.scriptamat.2025.116927

Qinghu Guo , Shiwei Hua , Chen Zhang , Xiaochun Li

{"title":"A new insight into porosity suppression in additive manufacturing of TiC nanoparticle-enabled aluminum alloys","authors":"Qinghu Guo , Shiwei Hua , Chen Zhang , Xiaochun Li","doi":"10.1016/j.scriptamat.2025.116927","DOIUrl":"10.1016/j.scriptamat.2025.116927","url":null,"abstract":"<div><div>Hydrogen-induced porosity remains a critical issue in additive manufacturing of aluminum alloys, undermining structural reliability and performance. Material modification strategies for porosity suppression remain underexplored and require further investigation. This study demonstrates a nanoparticle-enabled material design strategy for intrinsic porosity suppression. Incorporation of TiC nanoparticles reduced porosity by 96.8 % and refined grain size from 108 μm to 12 μm, producing a fully equiaxed and isotropic microstructure. Multiscale analysis and first-principles calculations revealed that site-selective hydrogen adsorption on TiC surfaces serves as the primary suppression mechanism. Two synergistic effects further contribute: (<em>i</em>) interfacial dispersion promotes high-angle boundary formation, increasing hydrogen trap density; and (<em>ii</em>) thermal modulation extends the mushy zone, enhancing hydrogen redistribution and bubble escape. These effects enable in-situ mitigation and spatial homogenization of porosity. This material-driven approach offers a promising path for in-situ porosity mitigation and design of defect-tolerant alloys in additive manufacturing.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"269 ","pages":"Article 116927"},"PeriodicalIF":5.6,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144810616","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

Amorphization resistance in A-site multi-component MAX phases V2(SnFeCoMnNi)C and V2(SnFe)C under in-situ ion irradiation 原位离子辐照下a位多组分MAX相V2(SnFeCoMnNi)C和V2(SnFe)C的非晶化阻力

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2025-08-06 DOI: 10.1016/j.scriptamat.2025.116895

Zijun Zhang , Hao Xiao , Shuang Zhao , Fengping Luo , Qing Huang , Youbing Li , Jianming Xue , Yugang Wang , Chenxu Wang

{"title":"Amorphization resistance in A-site multi-component MAX phases V2(SnFeCoMnNi)C and V2(SnFe)C under in-situ ion irradiation","authors":"Zijun Zhang , Hao Xiao , Shuang Zhao , Fengping Luo , Qing Huang , Youbing Li , Jianming Xue , Yugang Wang , Chenxu Wang","doi":"10.1016/j.scriptamat.2025.116895","DOIUrl":"10.1016/j.scriptamat.2025.116895","url":null,"abstract":"<div><div>The chemical composition of materials plays a critical role in determining their performance under extreme conditions, such as irradiation. In this study, we investigate the irradiation-induced structural evolution in multi-component MAX phases V<sub>2</sub>(SnFeCoMnNi)C and V<sub>2</sub>(SnFe)C with varying A-site components. Through in-situ irradiation experiments, we demonstrate that both the two-component V<sub>2</sub>(SnFe)C and the five-component V<sub>2</sub>(SnFeCoMnNi)C material undergo multi-stage phase transformations and amorphization. Notably, V<sub>2</sub>(SnFe)C exhibits superior resistance to amorphization compared to V<sub>2</sub>(SnFeCoMnNi)C. First-principles calculations reveal that the enhanced performance of V<sub>2</sub>(SnFe)C under irradiation is attributed to its lower antisite defect formation energy in the initial phase and the reduced lattice distortion in the intermediate γ-phase formed during irradiation. These characteristics facilitate the accommodation of irradiation-induced defects and stabilize the lattice under irradiation. This study provides a potential way to evaluate the radiation tolerance of MAX phases and has an inspiring role in the component regulation in complex ceramics.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"269 ","pages":"Article 116895"},"PeriodicalIF":5.6,"publicationDate":"2025-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144779822","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

Interfacing C60 fullerene monolayer and Bi2Se3 topological insulator: From orientational ordering to prospective advanced electronic and transport properties C60富勒烯单层与Bi2Se3拓扑绝缘体的界面：从取向有序到未来先进的电子和输运性质

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2025-08-06 DOI: 10.1016/j.scriptamat.2025.116903

Vsevolod V. Mararov , Alexey N. Mihalyuk , Tatyana V. Utas , Mariia A. Abramova , Alexander V. Davydenko , Andrey V. Zotov , Alexander A. Saranin

{"title":"Interfacing C60 fullerene monolayer and Bi2Se3 topological insulator: From orientational ordering to prospective advanced electronic and transport properties","authors":"Vsevolod V. Mararov , Alexey N. Mihalyuk , Tatyana V. Utas , Mariia A. Abramova , Alexander V. Davydenko , Andrey V. Zotov , Alexander A. Saranin","doi":"10.1016/j.scriptamat.2025.116903","DOIUrl":"10.1016/j.scriptamat.2025.116903","url":null,"abstract":"<div><div>Integration of fullerene molecules into ultimately thin films gives rise to various fascinating effects, such as superconductivity, topology and quantum transport, however, strong substrate-mediated interaction in many hybrid molecular systems often suppresses the emergent electronic effects. In the present work, we interfaced the C<sub>60</sub> fullerene molecular film and a 3D topological insulator Bi<sub>2</sub>Se<sub>3</sub> and investigated the ordering and electronic properties of the system using various experimental techniques combined with the state-of-the-art first-principles calculations. We synthesized the highly-ordered epitaxial fullerene monolayer and found it to be electronically decoupled from the substrate, due to the negligible molecule-substrate interaction, which brings it to the nearly free-standing state. We showed that electron doping and atomic intercalation enrich its functionalities, since they boost carrier concentration and effectively shift the Fermi level to the vicinity of molecular flat bands, which may enable the high-electron correlation regime and reveal a great potential of C<sub>60</sub>/Bi<sub>2</sub>Se<sub>3</sub> interface, as an advanced hybrid molecular 2D material.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"269 ","pages":"Article 116903"},"PeriodicalIF":5.6,"publicationDate":"2025-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144779823","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

Enhanced cavitation erosion resistance of FeCrNiTiAlNb multi-principal element alloy coatings via grain-boundary-phase engineering 通过晶界相工程增强FeCrNiTiAlNb多主元素合金涂层的抗空泡侵蚀性能

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2025-08-05 DOI: 10.1016/j.scriptamat.2025.116906

Xiaoming Chen , Jing Wang , Yidong Wu , Xin Wei , Qingbo Meng , Zhao Dong , Li Fu , Xidong Hui

{"title":"Enhanced cavitation erosion resistance of FeCrNiTiAlNb multi-principal element alloy coatings via grain-boundary-phase engineering","authors":"Xiaoming Chen , Jing Wang , Yidong Wu , Xin Wei , Qingbo Meng , Zhao Dong , Li Fu , Xidong Hui","doi":"10.1016/j.scriptamat.2025.116906","DOIUrl":"10.1016/j.scriptamat.2025.116906","url":null,"abstract":"<div><div>Cavitation erosion (CE) in hydraulic turbine flow-passing components impedes hydropower efficiency and undermines carbon neutrality efforts. This work presents a grain-boundary-engineered FeCr<sub>30</sub>Ni<sub>25</sub>Al<sub>5</sub>Ti<sub>5</sub>Nb<sub>x</sub> multi-principal element alloy coating that achieves breakthrough CE resistance through Nb-mediated microstructure control. The Nb2.6 specimen exhibited 1.35 mg cumulative mass loss after 20 h ultrasonic CE testing, which is 8.9 % of the conventional ZG04Cr13Ni5Mo steel and 17.9 % of the Nb-free counterparts. Microstructural analysis reveals that Nb addition refines BCC grains (24.3 ± 2.4 to 17.7 ± 1.2 μm), increases grain-boundary-decorated FCC phase fraction (up to 24.3 ± 3.5 %), and promotes Laves phase precipitation. These modifications mitigate stress concentration, restrict crack propagation via dislocation pinning, and enable coordinated deformation between BCC and FCC phases. This work establishes a grain-boundary engineering strategy for designing CE-resistant coatings, advancing sustainable hydropower and marine applications.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"269 ","pages":"Article 116906"},"PeriodicalIF":5.6,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144772819","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

A reversible solvent segregation transition at grain boundaries in gold-platinum alloys 金-铂合金晶界上的可逆溶剂偏析转变

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2025-08-05 DOI: 10.1016/j.scriptamat.2025.116902

Sebastian Calderon , Wen-Yu Chen , Md. Shariful Islam , Sai S. Tripathy , Maarten P. de Boer , Elizabeth C. Dickey , Gregory S. Rohrer

引用次数: 0

Enhanced thermoelectric performance in CuAgSe/Cu2Se composite by cold sintering mediated nanoengineering 冷烧结介导纳米工程增强CuAgSe/Cu2Se复合材料热电性能

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2025-08-05 DOI: 10.1016/j.scriptamat.2025.116901

Shilong Wu , Qi Ding , Jihu Chen, Zhi Cheng, Xu Wang, Mingming Si, Yuchi Fan, Wan Jiang

{"title":"Enhanced thermoelectric performance in CuAgSe/Cu2Se composite by cold sintering mediated nanoengineering","authors":"Shilong Wu , Qi Ding , Jihu Chen, Zhi Cheng, Xu Wang, Mingming Si, Yuchi Fan, Wan Jiang","doi":"10.1016/j.scriptamat.2025.116901","DOIUrl":"10.1016/j.scriptamat.2025.116901","url":null,"abstract":"<div><div>Cu<sub>2</sub>Se based thermoelectric materials have remarkable thermoelectric properties especially at high temperature, but the inferior low/medium temperature performance and energy consuming processing prevent the industrial application. In this study, CuAgSe/Cu<sub>2</sub>Se composites were prepared by cold sintering process using vitamin C as transient liquid, which not only reduces the sintering temperature to 350 °C, but also achieve superior thermoelectric performance compared with the material prepared by spark plasma sintering. The preserved CuAgSe nanoplates greatly suppress the thermal conductivity of composite, while improves the Seebeck coefficient via energy screening effect due to the heterojunctions at interfaces. In addition, the CSP induced dislocations and internal strains also effectively scatter the phonon transport, As a result, a ZT value of about 1.5 at 700 K and a high average ZT value of 0.94 from 400 K to 700 K are obtained, which demonstrates the great potential of CSP for applications in thermoelectric composites.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"269 ","pages":"Article 116901"},"PeriodicalIF":5.6,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144772820","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

Heterogeneous precipitation of γ′′ along LAGBs during post-heat treatment of powder bed fusion additively manufactured IN718 superalloy 粉末床熔合制备的IN718高温合金热处理后沿LAGBs有γ′非均匀析出

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2025-07-30 DOI: 10.1016/j.scriptamat.2025.116898

Ramakrishna M , Divya K , Chandrasekhar S B , Suresh Koppoju , Rajesh Korla

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Deformation mechanisms of the ordered B82-ωo phase 有序B82-ω - o相的变形机理

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2025-07-29 DOI: 10.1016/j.scriptamat.2025.116900

Xiang Guo, Lin Song, Tiebang Zhang

引用次数: 0

Enhancing impact toughness of Q-P-T plain steels via multiscale design: Resolving the strength-toughness balance 通过多尺度设计提高Q-P-T素钢的冲击韧性：解决强度-韧性平衡问题

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2025-07-29 DOI: 10.1016/j.scriptamat.2025.116890

Liyang Zeng , Jiazhi Zhang , Jie Li , Shuai Wang , Xiangyu Song , Yonghua Rong , Gan Li , Ying Li , Xunwei Zuo , Nailu Chen , Jian Lu

{"title":"Enhancing impact toughness of Q-P-T plain steels via multiscale design: Resolving the strength-toughness balance","authors":"Liyang Zeng , Jiazhi Zhang , Jie Li , Shuai Wang , Xiangyu Song , Yonghua Rong , Gan Li , Ying Li , Xunwei Zuo , Nailu Chen , Jian Lu","doi":"10.1016/j.scriptamat.2025.116890","DOIUrl":"10.1016/j.scriptamat.2025.116890","url":null,"abstract":"<div><div>The impact toughness of steel is crucial for structural applications under dynamic loading. Current steel development trends emphasize enhancing both strength and toughness in cost-effective plain steels, resolving the inherent strength-toughness balance. Here, we propose a novel multiscale design to significantly improve the impact toughness of quenching-partitioning-tempering plain steel. By leveraging the dislocation across martensite/austenite interface effect, we optimize the retained austenite content to approximately 10 %, evidently reduce brittle strain-induced twinned martensite while maintaining exceptional ductility. Furthermore, surface mechanical attrition treatment induces a residual compressive stress in sample surface accompanying with microstructure gradient and improving energy absorption during impact. This strategy achieves a fourfold increase in impact toughness, resolving the strength-toughness balance. The approach not only demonstrates the potential of multiscale design on compressive stress gradient accompanying microstructure gradient to optimize steel performance but also provides a scalable, cost-effective solution for high-performance materials in dynamic loading application.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"268 ","pages":"Article 116890"},"PeriodicalIF":5.6,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144722382","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