Scripta Materialia最新文献_第5页

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

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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

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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

Influence of hydrogen on the growth kinetics of Al3Zr precipitates in an Al-Zr alloy 氢对Al-Zr合金中Al3Zr相生长动力学的影响

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-04-30 DOI: 10.1016/j.scriptamat.2025.116722

Omar Boukir , Kaveh Edalati , Fabien Cuvilly , Shivam Dangwal , Xavier Sauvage

引用次数: 0

Revisiting hydrogen trapping in Mg32(Al, Zn)49 approximant crystal: Influence of chemical disorder 再论Mg32(Al, Zn)49近似晶体中的氢俘获：化学无序的影响

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-04-30 DOI: 10.1016/j.scriptamat.2025.116730

Kazuyuki Shimizu , Masatake Yamaguchi , Satoshi Akamaru , Katsuhiko Nishimura , Rion Abe , Taisuke T. Sasaki , Yafei Wang , Hiroyuki Toda

{"title":"Revisiting hydrogen trapping in Mg32(Al, Zn)49 approximant crystal: Influence of chemical disorder","authors":"Kazuyuki Shimizu , Masatake Yamaguchi , Satoshi Akamaru , Katsuhiko Nishimura , Rion Abe , Taisuke T. Sasaki , Yafei Wang , Hiroyuki Toda","doi":"10.1016/j.scriptamat.2025.116730","DOIUrl":"10.1016/j.scriptamat.2025.116730","url":null,"abstract":"<div><div>The approximant crystal Mg<sub>32</sub>(Al, Zn)<sub>49</sub> (T-phase in Al-Zn-Mg alloys) holds the potential for enhancing both strength and hydrogen embrittlement resistance in aluminum alloys when present as nano-precipitates. Our previous computational exploration indicated strong hydrogen trapping but neglected the inherent chemical disorder of this approximant crystal. This study revisits hydrogen trapping in Mg<sub>32</sub>(Al, Zn)<sub>49</sub>, directly including chemical disorder via special quasirandom structures. Density functional theory calculations reveal that, while chemical disorder introduces variations in trapping energies, the overall trend of strong trapping persists. Tetrahedral sites coordinated by Mg atoms exhibit particularly strong trapping, with smaller tetrahedral volumes correlating with stronger trapping due to enhanced Mg-H interactions. Multiple hydrogen occupation of these sites is also calculated, resulting in high hydrogen densities. Experimental validation using thermal desorption spectroscopy on a bulk Mg<sub>32</sub>(Al, Zn)<sub>49</sub> sample confirms hydrogen trapping, reinforcing the potential of this phase for designing advanced, hydrogen-resistant aluminum alloys.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"265 ","pages":"Article 116730"},"PeriodicalIF":5.3,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892014","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

Effects of Re and Ni on high-temperature stability and electrical conductivity in Mo thin films 稀土和镍对钼薄膜高温稳定性和导电性的影响

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-04-29 DOI: 10.1016/j.scriptamat.2025.116735

Jiachen Zhang , Huajiang Qin , Yuqing Wang , Geng An , Pengfa Feng , Guojun Zhang

引用次数: 0

Microstructure and electronic properties of the graphene/{111} copper interface modulated by the rotation angle 旋转角度调制石墨烯/{111}铜界面的微观结构和电子性能

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-04-28 DOI: 10.1016/j.scriptamat.2025.116689

Zhuoxin Yan, Yu Wang, Jiamiao Ni, Boan Zhong, Jian Song, Yue Liu, Tongxiang Fan

{"title":"Microstructure and electronic properties of the graphene/{111} copper interface modulated by the rotation angle","authors":"Zhuoxin Yan, Yu Wang, Jiamiao Ni, Boan Zhong, Jian Song, Yue Liu, Tongxiang Fan","doi":"10.1016/j.scriptamat.2025.116689","DOIUrl":"10.1016/j.scriptamat.2025.116689","url":null,"abstract":"<div><div>Interfacial structure and characteristics of heterogeneous interfaces are essential for the macro-properties of composites. Particularly for graphene/metal heterojunctions, interface rotation angle variations may cause distinctions in interfacial electronic properties. However, direct experimental evidence is lacking in understanding the corresponding mechanisms. Here, we investigated influential mechanisms of rotation angle differences on interfacial electronic coupling in classical graphene/copper (Gr/Cu) immiscible epitaxial systems. Atomic force microscopy combined with surface potential measurement confirmed that the different rotation angles (∼8°) contributed to a modulated Fermi level in Gr/Cu, indicating varied electron transfer at the interface. Through theoretical analysis, it is found that the modulated interfacial electronic behavior is primarily ascribed to different overlap between C-p and Cu-3d orbitals, resulting from varying fluctuation of graphene and changed minimum Gr/Cu distance at different rotation angles. The mechanism of interfacial electronic properties modulated by the rotation angles could further guide the design of heterogeneous interfaces in electronic applications.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"264 ","pages":"Article 116689"},"PeriodicalIF":5.3,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143879154","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 surprising proliferation of detwinning in β-tin at extreme loading rates 在极端加载速率下β-锡中令人惊讶的孪晶扩散

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-04-28 DOI: 10.1016/j.scriptamat.2025.116727

W.J. Schill , J. Lind , J.L. Brown , M.B. Prime , S.J. Fensin , D.R. Jones , D.T. Martinez , J.W. Dyer , T.T. Nguyen , M. Nelms , K.L. Schmidt , C.C. Bataile , J.M.D. Lane , N.R. Barton

引用次数: 0