Scripta Materialia最新文献_第9页

Cyclic stable superelasticity and elastocaloric effect via the R→B19′ transformation in NiTi NiTi中R→B19′相变的循环稳定超弹性和弹热效应

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2026-03-15 Epub Date: 2025-12-26 DOI: 10.1016/j.scriptamat.2025.117149

Jingxian Zhang, Qianglong Liang, Xiangdong Ding

{"title":"Cyclic stable superelasticity and elastocaloric effect via the R→B19′ transformation in NiTi","authors":"Jingxian Zhang, Qianglong Liang, Xiangdong Ding","doi":"10.1016/j.scriptamat.2025.117149","DOIUrl":"10.1016/j.scriptamat.2025.117149","url":null,"abstract":"<div><div>NiTi-based shape memory alloys are promising candidates for solid-state refrigeration owing to the latent heat associated with stress-induced martensitic transformations. However, the conventional B2→B19′ pathway is constrained by a fundamental trade-off between elastocaloric performance and cyclic stability. In this work, we demonstrate that activating the R→B19′ transformation pathway effectively circumvents this limitation. Differential scanning calorimetry confirms stable and reversible R→B19′ transformations in binary NiTi alloys. The reduced energy barrier between the R-phase and B19′ martensite facilitates a more continuous and efficient transformation, thereby suppressing the accumulation of irreversible defects. Through integrated thermomechanical processing and microstructural characterization, we show that NiTi alloys undergoing reversible R↔B19′ transformations exhibit a large adiabatic temperature change (18.59 K), high recoverable strain (4.86%), and exceptional cycling stability, retaining over 99% of performance after 200 tensile cycles. These findings establish a robust design strategy for high-performance shape memory alloys.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"274 ","pages":"Article 117149"},"PeriodicalIF":5.6,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145837428","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

Optimizing strength and ductility in CoCrNiAl alloys by coupling lattice distortion with stacking fault energy 利用晶格畸变和层错能耦合优化CoCrNiAl合金的强度和延展性

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2026-03-15 Epub Date: 2025-12-24 DOI: 10.1016/j.scriptamat.2025.117151

Weizong Bao , Ning Ding , Jiawen Zhang , Ziqi Mei , Guoqiang Xie , Binbin He , Wenjun Lu

引用次数: 0

Thermally induced structural evolution in amorphous ge-as-se enhances ovonic threshold switching 热诱导非晶态锗砷化镓的结构演化增强了电子阈值开关

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2026-03-15 Epub Date: 2025-12-10 DOI: 10.1016/j.scriptamat.2025.117139

Yuhao Wang , Haotian Wang , Xiangyu Fu , Yulai Zhu , Sannian Song , Zhitang Song

{"title":"Thermally induced structural evolution in amorphous ge-as-se enhances ovonic threshold switching","authors":"Yuhao Wang , Haotian Wang , Xiangyu Fu , Yulai Zhu , Sannian Song , Zhitang Song","doi":"10.1016/j.scriptamat.2025.117139","DOIUrl":"10.1016/j.scriptamat.2025.117139","url":null,"abstract":"<div><div>Amorphous GeAsSe chalcogenides exhibit unique ovonic threshold switching (OTS) behavior for selector devices, yet their performance is limited by structural instability. Herein, we demonstrate that 400 °C annealing induced a liquid-liquid transition (LLT)-like structural reorganization in Ge<sub>23</sub>As<sub>22</sub>Se<sub>55</sub> glass, leading to remarkable improvements in OTS characteristics. XPS analysis reveals suppressed homopolar bonds and enhanced heteropolar coordination (GeSe<sub>4/2</sub>, AsSe<sub>3/2</sub>). Radial distribution functions further evidence local ordering with sharpened As-Se correlations and emergent Se-Se shoulder peaks. This reorganization intensifies Peierls distortion in isolated [AsSe<sub>3</sub>] units, widening the bandgap by enhancing lone-pair electron localization. Consequently, annealed OTS devices achieve a 45% higher threshold voltage, over 3-order reduction in leakage current, and endurance increased by two orders of magnitude (>10<sup>8</sup> cycles). Our work can stimulate further exploration of the thermal stability of chalcogenide-based OTS materials, lay a solid foundation for developing LLT-like structural reorganization as a promising strategy for designing thermally stable selectors.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"274 ","pages":"Article 117139"},"PeriodicalIF":5.6,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145735012","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

Nanocrystalline-accelerated grain boundary diffusion creep for enhanced densification rate of nano-Cu sintering 纳米晶加速晶界扩散蠕变对纳米cu烧结致密化速率的提高

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2026-03-15 Epub Date: 2025-12-16 DOI: 10.1016/j.scriptamat.2025.117142

Shuaiqi Wang , Guisheng Zou , Jinpeng Huo , Chengjie Du , Rongbao Du , Dejian Li , Shunfeng Han , Bofu Li , Lei Liu

{"title":"Nanocrystalline-accelerated grain boundary diffusion creep for enhanced densification rate of nano-Cu sintering","authors":"Shuaiqi Wang , Guisheng Zou , Jinpeng Huo , Chengjie Du , Rongbao Du , Dejian Li , Shunfeng Han , Bofu Li , Lei Liu","doi":"10.1016/j.scriptamat.2025.117142","DOIUrl":"10.1016/j.scriptamat.2025.117142","url":null,"abstract":"<div><div>Advanced electronic packaging requires highly dense sintered Cu interconnects for serving under extreme conditions. However, densification of nano-Cu is typically limited by insufficient driving force from surface energy during final sintering stage. This study presented a creep strategy to promote atomic flow, facilitating the final-stage densification. In conditions of 300°C/75 MPa, densification rate of fine-grained Cu (370 nm) was approximately 8 times higher than coarse-grained Cu (1050 nm). Theoretical analysis revealed that this enhancement was attributed to activation of grain boundary diffusion (Coble) creep, with an activation energy of 89.11 kJ/mol, and demonstrating nanocrystalline acceleration effect. Using this approach, sintered Cu density was improved from 88.15% to 95.29% within 1 min. Furthermore, a transition of creep mechanisms was observed at lower temperatures (160–250 °C), where the activation energy decreased to 14.19 kJ/mol and the influence of grain size became negligible. A critical stress threshold for densification was also identified.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"274 ","pages":"Article 117142"},"PeriodicalIF":5.6,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145787822","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

Shock wave-induced multiple deformation modes in a HfNbZrVTi high-entropy alloy HfNbZrVTi高熵合金激波诱导的多种变形模式

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2026-03-01 Epub Date: 2025-11-10 DOI: 10.1016/j.scriptamat.2025.117088

Jingyao He , Fan Zhang , Zezhou Li , Shipan Yin , Qinghui Tang , Linbing Zhang , Yang Liu , Jichen Xu , Xingwang Cheng

{"title":"Shock wave-induced multiple deformation modes in a HfNbZrVTi high-entropy alloy","authors":"Jingyao He , Fan Zhang , Zezhou Li , Shipan Yin , Qinghui Tang , Linbing Zhang , Yang Liu , Jichen Xu , Xingwang Cheng","doi":"10.1016/j.scriptamat.2025.117088","DOIUrl":"10.1016/j.scriptamat.2025.117088","url":null,"abstract":"<div><div>The deformation behaviors in HfNbZrVTi high-entropy alloy (HEA) under shock loading are investigated. We find that, in addition to dislocation slip, multiple deformation modes are activated, including {112} kink banding, {112}<111> deformation twinning, and body-centered cubic (BCC) to omega phase transition. Atomic-scale characterization of deformation interfaces reveals that pressure dependent kink banding is driven by the movement of a<sub>0</sub>/2<111>{112} edge dislocation pairs, while the BCC to omega phase transition involves atomic shuffling of 1/12<span><math><mrow><mo>[</mo><mn>11</mn><mover><mn>1</mn><mo>¯</mo></mover><mo>]</mo></mrow></math></span> and 1/12<span><math><mrow><mo>[</mo><mover><mn>1</mn><mo>¯</mo></mover><mover><mn>1</mn><mo>¯</mo></mover><mn>1</mn><mo>]</mo></mrow></math></span> on adjacent <span><math><msub><mrow><mo>(</mo><mn>2</mn><mover><mn>1</mn><mo>¯</mo></mover><mn>1</mn><mo>)</mo></mrow><mtext>BCC</mtext></msub></math></span> planes. Furthermore, the omega phase distributes at the twin boundary accompanied with the formation of transient omega phase. These findings reflect unique deformation behaviors of HEAs comprising mixed multiple elements in extreme loading conditions.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"273 ","pages":"Article 117088"},"PeriodicalIF":5.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145527337","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

On the effect of microstructural heterogeneity on yield point phenomena in architectured steel: Revealed by in-situ micro-digital image correlation (μDIC) 显微组织非均匀性对组织钢屈服点现象的影响——基于原位微数字图像相关（μDIC）的研究

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2026-03-01 Epub Date: 2025-11-14 DOI: 10.1016/j.scriptamat.2025.117102

B. Yu , C. Pelligra , S. Asqardoust , Y. Emun , K. Abu Samk , H. Azizi , Y. Brechet , H. Zurob

{"title":"On the effect of microstructural heterogeneity on yield point phenomena in architectured steel: Revealed by in-situ micro-digital image correlation (μDIC)","authors":"B. Yu , C. Pelligra , S. Asqardoust , Y. Emun , K. Abu Samk , H. Azizi , Y. Brechet , H. Zurob","doi":"10.1016/j.scriptamat.2025.117102","DOIUrl":"10.1016/j.scriptamat.2025.117102","url":null,"abstract":"<div><div>Lüders banding in carbon steel is a manifestation of discontinuous yielding and limits the formability and surface quality of the steel. In this study, we explore the role of microstructure heterogeneity in suppressing the formation of Luder band. A ferritic steel was processed by decarburization, cold rolling, and controlled annealing to induce partial recrystallization and develop a heterogeneous grain structure. This micro-architectured material resembles a functionally graded structure and inhibits the propagation of Lüders bands. We propose a simple model in which heterogeneity disrupts the spatial coherence of yield front propagation. Suppression of Lüders bands was confirmed through tensile testing with micro- digital image correlation (DIC) and <em>in-situ</em> micro-tensile testing in Scanning Electron Microscopy (SEM). This heterostructure engineering approach demonstrates a viable alternative strategy for tuning the deformation behavior of ferritic steel.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"273 ","pages":"Article 117102"},"PeriodicalIF":5.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145527330","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

Deformation of metal-ceramic nanolaminates at extreme strain rates 金属陶瓷纳米层合材料在极端应变速率下的变形

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2026-03-01 Epub Date: 2025-11-11 DOI: 10.1016/j.scriptamat.2025.117089

Jianxiong Li , Qi Tang , Nikhilesh Chawla , Mostafa Hassani

{"title":"Deformation of metal-ceramic nanolaminates at extreme strain rates","authors":"Jianxiong Li , Qi Tang , Nikhilesh Chawla , Mostafa Hassani","doi":"10.1016/j.scriptamat.2025.117089","DOIUrl":"10.1016/j.scriptamat.2025.117089","url":null,"abstract":"<div><div>While the deformation mechanisms of Al-SiC nanolaminates under quasi-static and low stain rate conditions have been extensively studied, their behavior under ultra-high strain rates are not well-understood. Here we report on the high strain-rate behavior of Al-SiC metal-ceramic nanolaminates with layer thicknesses ranging from 10 to 100 nm by nanoindentation tests and laser induced microparticle impact tests. The effective strain rates spanned nine orders of magnitude, ranging from 10<sup>–1</sup> to 10<sup>8</sup> s<sup>-1</sup>. While the hardness of Al-SiC nanolaminates strongly depends on layer thickness at low strain rates, the differences progressively decreased with increasing strain rate, ultimately converging under ultra-high strain rate impact. At low strain rates, deformation progresses slowly, layer by layer; whereas with increasing strain rate, it transitions toward continuum, bulk-like behavior, where a large number of layers deform collectively and the mechanical response becomes increasingly governed by the volume fraction rather than the layer thickness of the constituents.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"273 ","pages":"Article 117089"},"PeriodicalIF":5.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145527335","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

Mary Fortune Award 2026 玛丽财富奖2026

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2026-03-01 Epub Date: 2025-11-06 DOI: 10.1016/j.scriptamat.2025.117034

引用次数: 0

Response to the comments on “Practicing pseudo-binary diffusion couple method in ternary and multicomponent systems” 对“在三元和多组分系统中应用伪二元扩散偶法”评论的回应

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2026-03-01 Epub Date: 2025-11-20 DOI: 10.1016/j.scriptamat.2025.117090

Suman Sadhu , Anuj Dash , Neelamegan Esakkiraja , Ujjval Bansal , Raju Ravi , Saswata Bhattacharyya , Sergiy Divinski , Aloke Paul

引用次数: 0

Physical feature guided design of refractory high entropy alloys for strength-plasticity synergy across wide strain rates 物理特征指导设计的难熔高熵合金在大应变率下的强度-塑性协同

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2026-03-01 Epub Date: 2025-11-07 DOI: 10.1016/j.scriptamat.2025.117086

Wei Wu , Junxiao Xu , Fuhua Cao , Yu Zhang , Yiren Wang , Zheng Peng , Yan Chen , Lanhong Dai

{"title":"Physical feature guided design of refractory high entropy alloys for strength-plasticity synergy across wide strain rates","authors":"Wei Wu , Junxiao Xu , Fuhua Cao , Yu Zhang , Yiren Wang , Zheng Peng , Yan Chen , Lanhong Dai","doi":"10.1016/j.scriptamat.2025.117086","DOIUrl":"10.1016/j.scriptamat.2025.117086","url":null,"abstract":"<div><div>Strength and plasticity are critical properties but always unavoidable trade-offs of materials for various service environment. The vast composition-property space of refractory high entropy alloy (RHEAs) enables resolving this trade-off, but makes their composition design highly challenging. Herein, we formulate a physical feature-guided design strategy for RHEAs toward balanced strength-plasticity across strain rates. Three RHEAs with a superior combination of strength and plasticity over wide strain rate ranges were discovered and synthetized. The composition-property diagrams are constructed and an optimal composition range is identified based on model prediction for several typical refractory elements. By decoding the key physical features governing property trade-offs via interpretable machine learning (ML), this study establishes a data-efficient paradigm for multi-objective materials design, demonstrated here for refractory high-entropy alloys but extensible to other complex systems.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"273 ","pages":"Article 117086"},"PeriodicalIF":5.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145475870","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