Scripta Materialia最新文献_第7页

Fully restoring the damaged ductility of H-charged medium Mn steel via pulsed current 脉冲电流使充氢介质Mn钢的塑性完全恢复

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-03-26 DOI: 10.1016/j.scriptamat.2025.116663

Bin Hu , Shiji Geng , Nima Babaei , Alexander Gramlich , Yichao Bai , Wenting Zhao , Junkui Li , Xinjun Sun , Caijun Zhang , Ulrich Krupp , Haiwen Luo

引用次数: 0

Coupling strengthening with local stress relaxation in an 800 MPa yield strength strain transformable titanium alloy 800 MPa屈服强度应变变形钛合金的局部应力松弛耦合强化

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-03-26 DOI: 10.1016/j.scriptamat.2025.116669

N. Keskar , S.A. Mantri , Y. Danard , T. Ingale , M.S.K.K.Y. Nartu , P. Agrawal , L. Lilensten , F. Sun , F. Prima , R. Banerjee

{"title":"Coupling strengthening with local stress relaxation in an 800 MPa yield strength strain transformable titanium alloy","authors":"N. Keskar , S.A. Mantri , Y. Danard , T. Ingale , M.S.K.K.Y. Nartu , P. Agrawal , L. Lilensten , F. Sun , F. Prima , R. Banerjee","doi":"10.1016/j.scriptamat.2025.116669","DOIUrl":"10.1016/j.scriptamat.2025.116669","url":null,"abstract":"<div><div>A novel strain transformable β-metastable titanium alloy, Ti–7.5 Cr–1Sn–1Fe (TCSF), was designed using the \"d-electron alloy design\" method to achieve a unique balance of twinning induced plasticity (TWIP) and transformation induced plasticity (TRIP) deformation mechanisms. Tensile testing revealed excellent tensile properties, including a high yield strength ∼800 MPa, an ultimate tensile strength ∼1400 MPa, and exceptional strain-hardening over extended plastic deformation. Microstructural analysis revealed a high density of {332}〈113〉 deformation twins, with stress-induced α″ martensite forming at the twin/matrix interfaces, facilitating internal stress relaxation. This alloy exhibits a dynamic composite effect, driven by hierarchical deformation twin networks obstructing dislocation motion, enhancing strain hardening, while the local stresses generated by the deformation twinning is relaxed by stress induced martensite formation at the twin/matrix interface, promoting uniform elongation. This study highlights promising design strategies for high strength and strain hardenable Ti alloys.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"262 ","pages":"Article 116669"},"PeriodicalIF":5.3,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143697792","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

Measuring the elastic properties of the Gibeon meteorite using laser ultrasound 用激光超声测量吉本陨石的弹性特性

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-03-26 DOI: 10.1016/j.scriptamat.2025.116666

Wenqi Li, Matt Clark, Richard J. Smith

{"title":"Measuring the elastic properties of the Gibeon meteorite using laser ultrasound","authors":"Wenqi Li, Matt Clark, Richard J. Smith","doi":"10.1016/j.scriptamat.2025.116666","DOIUrl":"10.1016/j.scriptamat.2025.116666","url":null,"abstract":"<div><div>Meteorites provide access to information on the formation and evolution of planetary bodies which is otherwise difficult to study. The unique nature of these samples and their relative scarcity means that non-destructive analysis techniques are needed to study their properties.</div><div>This paper uses the laser ultrasound technique spatially resolved acoustic spectroscopy to non-destructively determine both the crystal orientation and the single crystal elastic constants (<span><math><msub><mrow><mi>C</mi></mrow><mrow><mi>i</mi><mi>j</mi></mrow></msub></math></span>) of a sample of the Gibeon meteorite. There are no published values to directly compare the results of this study, as non-destructive measurements of the single crystal elasticity on granular material have not been possible. Therefore, comparisons with theoretical values for man-made iron-nickel alloys are given showing the <span><math><msub><mrow><mi>C</mi></mrow><mrow><mi>i</mi><mi>j</mi></mrow></msub></math></span> values are in the expected range. There are studies providing bulk elastic properties of meteorites, and so calculated bulk properties derived from the single crystal elasticity measurements are compared and also agree well.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"262 ","pages":"Article 116666"},"PeriodicalIF":5.3,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143697700","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

Theoretical ab initio predictions of L12-Al3Zr structure stabilization by vacancy incorporation on the Zr sublattice Zr亚晶格空位引入对L12-Al3Zr结构稳定性的理论从头算预测

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-03-25 DOI: 10.1016/j.scriptamat.2025.116661

Flemming J.H. Ehlers , Qingkun Tian , Lipeng Ding , Zhihong Jia

{"title":"Theoretical ab initio predictions of L12-Al3Zr structure stabilization by vacancy incorporation on the Zr sublattice","authors":"Flemming J.H. Ehlers , Qingkun Tian , Lipeng Ding , Zhihong Jia","doi":"10.1016/j.scriptamat.2025.116661","DOIUrl":"10.1016/j.scriptamat.2025.116661","url":null,"abstract":"<div><div>This work studies the effect of Zr sublattice vacancy (V<sub>Zr</sub>) incorporation on the L1<sub>2</sub>-Al<sub>3</sub>Zr structure stabilization by first-principles calculations. It is revealed that incorporation of such vacancies in the metastable L1<sub>2</sub> phase is thermodynamically favored, with the energetically most preferred L1<sub>2</sub>-Al<sub>3</sub>Zr<sub>(1-x)</sub>(V<sub>Zr</sub>)<sub>x</sub> configuration significantly reducing the L1<sub>2</sub> → D0<sub>23</sub> transformation driving force at experimentally relevant temperatures. The absence of experimental observation of any significant V<sub>Zr</sub> concentration in L1<sub>2</sub> is proposed to result from an unfavorable Zr sublattice vacancy incorporation at the dispersoid-matrix interface, coupled with restrictive diffusion paths of Zr in the precipitate, with calculations providing potential support for this hypothesis. The present findings suggest that a circumvention of this dispersoid-matrix interface barrier to V<sub>Zr</sub> incorporation may notably increase the thermal stability of L1<sub>2</sub>, representing an important feature on an alternative route to the development of castable Al alloys with superior thermal stability.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"262 ","pages":"Article 116661"},"PeriodicalIF":5.3,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682421","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

Revisiting the phase transformations of wüstite scale formed on low carbon steel 再论低碳钢上形成的w<s:1> site尺度的相变

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-03-24 DOI: 10.1016/j.scriptamat.2025.116657

Cheng-Hung Shih , Liuwen Chang , Wei-Lin Wang , Kuang-Kuo Wang

引用次数: 0

Growth of F-doped BaBiO3 thin films via flow-limited field-injection electrostatic spraying toward experimental realization of wide bandgap topological insulator 限流场注入静电喷涂法生长含f掺杂的BaBiO3薄膜，实现宽频隙拓扑绝缘体的实验

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-03-23 DOI: 10.1016/j.scriptamat.2025.116656

Riley Vesto , Hyungsoo Choi , Kyekyoon Kim

引用次数: 0

Strain partitioning-induced anisotropy in thermomechanically processed magnesium alloys comprised of earth-abundant elements 由大地丰度元素组成的热机械加工镁合金中应变分区引起的各向异性

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-03-22 DOI: 10.1016/j.scriptamat.2025.116659

Jishnu J. Bhattacharyya , Seth Faberman , Aaron Sullivan , Mainak Saha , Taisuke Sasaki , Sean R. Agnew

{"title":"Strain partitioning-induced anisotropy in thermomechanically processed magnesium alloys comprised of earth-abundant elements","authors":"Jishnu J. Bhattacharyya , Seth Faberman , Aaron Sullivan , Mainak Saha , Taisuke Sasaki , Sean R. Agnew","doi":"10.1016/j.scriptamat.2025.116659","DOIUrl":"10.1016/j.scriptamat.2025.116659","url":null,"abstract":"<div><div>Dilute Mg alloys based upon earth-abundant elements, e.g., Al, Ca, and Zn have attractive combinations of strength, ductility, and workability. Even higher strength can be obtained in work-hardened material without the heat treatments required to induce Guinier-Preston zone strengthening of previously studied versions of these alloys. This stems from a slightly stronger crystallographic texture than is present after solutionizing, a high dislocation density, and to a lesser degree, a fine distribution of globular Zn-rich precipitates. The anisotropic plastic response of sheet material is described using an elasto-viscoplastic self-consistent (EVPSC) polycrystal model. Strain partitioning between grains during rolling-induced strain hardening is held responsible for the yield strength, ductility, and especially, strain hardening anisotropy. Texture-induced plastic anisotropy is well-known, but the effect of strong partitioning of strain between variously oriented grains is critical to explain what may be classified as a sort of strain path change (generalized Bauschinger) effect.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"262 ","pages":"Article 116659"},"PeriodicalIF":5.3,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682419","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

Exchange bias phenomena in Pr-doped MnBi magnets at low temperatures 低温下掺pr MnBi磁体中的交换偏置现象

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-03-20 DOI: 10.1016/j.scriptamat.2025.116658

Wei Li , Yuhua Hou , Wenyan Yu , Zhiqiang Shi , Xiaoyan Cheng , Huiyong Yang , Dunhui Wang , Youlin Huang

{"title":"Exchange bias phenomena in Pr-doped MnBi magnets at low temperatures","authors":"Wei Li , Yuhua Hou , Wenyan Yu , Zhiqiang Shi , Xiaoyan Cheng , Huiyong Yang , Dunhui Wang , Youlin Huang","doi":"10.1016/j.scriptamat.2025.116658","DOIUrl":"10.1016/j.scriptamat.2025.116658","url":null,"abstract":"<div><div>MnBi magnets hold significant potential for the development of high-performance non-rare-earth permanent magnets. The exchange bias phenomenon plays a crucial role in enhancing their coercivity. Pr-doped MnBi alloys exhibits a pronounced exchange bias effect at low temperatures. The exchange bias field initially increases with Pr doping, reaching a maximum of 9.37 kOe, and then decreases at higher doping levels, while the coercivity peaks at 17.59 kOe. The exchange bias field diminishes with rising temperature, applied magnetic field, and repeated magnetic cycling, highlighting its sensitivity to these factors. Micromagnetic simulations reveal that the exchange bias arises from strong interfacial coupling between the ferromagnetic MnBi phase and an amorphous antiferromagnetic phase. The simulations also reproduce the training effect, demonstrating a gradual reduction in net magnetization at the antiferromagnetic interface with repeated cycling. This study advances the understanding of exchange bias phenomena and contributes to the development of high-performance MnBi magnets.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"262 ","pages":"Article 116658"},"PeriodicalIF":5.3,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682417","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

First-principles investigation of alloying effects on stacking fault energies and lattice constants of γ′′-Ni3Nb: A comprehensive study 合金化对γ”-Ni3Nb层错能和晶格常数影响的第一性原理研究：综合研究

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-03-19 DOI: 10.1016/j.scriptamat.2025.116653

Amir Hasan, Sankalp Biswal, Debalay Chakrabarti, Manas Paliwal

{"title":"First-principles investigation of alloying effects on stacking fault energies and lattice constants of γ′′-Ni3Nb: A comprehensive study","authors":"Amir Hasan, Sankalp Biswal, Debalay Chakrabarti, Manas Paliwal","doi":"10.1016/j.scriptamat.2025.116653","DOIUrl":"10.1016/j.scriptamat.2025.116653","url":null,"abstract":"<div><div>The impact of solute elements on the stacking fault energies (SFE) in γ′′-Ni<sub>3</sub>Nb is imperative to ascertain to design of new Ni-based superalloys. Although few experimental studies are available that determine the SFE in Ni alloys, a comprehensive and systematic study on the effect of solute elements on γ′′-Ni<sub>3</sub>Nb is unknown. In this study, first-principles calculations based on density functional theory were employed to investigate the effect of solutes. All the relevant <span>d</span>-block elements were evaluated. Substitutions at Ni and Nb sites were examined to assess their effects on intrinsic stacking fault (ISF), superlattice intrinsic stacking fault (SISF), and anti-phase boundary (APB-I) energies. The study elucidated that Ti, V, Co, and Fe are expected to inhibit the formation of detrimental delta phase and improve the mechanical properties. These findings offer insights into optimizing γ′′-strengthened Ni-based superalloys through tailored alloying strategies for enhancing the application of these alloys.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"262 ","pages":"Article 116653"},"PeriodicalIF":5.3,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143643593","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

From impurity ingress to high-performance doping: A perspective on atom probe tomography in energy materials 从杂质进入到高性能掺杂：能源材料的原子探针层析成像

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-03-19 DOI: 10.1016/j.scriptamat.2025.116648

Baptiste Gault , Leonardo Shoji Aota , Mathias Krämer , Se-Ho Kim

引用次数: 0