Scripta Materialia最新文献

Effects of heat treatment on the oxidation resistance of laser powder bed fusion printed 316L stainless steel in 600°C supercritical CO2 600℃超临界CO2中热处理对激光粉末床熔融印刷316L不锈钢抗氧化性能的影响

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-07-16 DOI: 10.1016/j.scriptamat.2025.116886

Xin Ma , Zeyu Tao , Zaiqing Que , Huajing Fang , Wenjun Kuang

引用次数: 0

The compositional-dependent phase engineering in TiZrHfNbx multi-principal element alloy TiZrHfNbx多主元素合金成分相关的相工程

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-07-15 DOI: 10.1016/j.scriptamat.2025.116883

Y.W. Wang , Q.F. He , Y. Liao , X.F. Wang , F.L. Luo , Q. Wang , C.W. Li , J.F. Gu

{"title":"The compositional-dependent phase engineering in TiZrHfNbx multi-principal element alloy","authors":"Y.W. Wang , Q.F. He , Y. Liao , X.F. Wang , F.L. Luo , Q. Wang , C.W. Li , J.F. Gu","doi":"10.1016/j.scriptamat.2025.116883","DOIUrl":"10.1016/j.scriptamat.2025.116883","url":null,"abstract":"<div><div>Phase engineering of Ti-/Zr-/Hf- alloys is critical for next-generation structural materials, yet the lack of understanding of composition-driven phase evolution and its kinetics impedes their design. This study investigates the phase transition pathways and kinetics in TiZrHfNb<sub>x</sub> (<em>x</em> = 0–0.4) alloys, revealing the influence of Nb content on phase stability and transition mechanisms. Multi-scale analyses have proven that Nb addition drives HCP (α)→BCC (β) transition, lowering <em>α→β</em> temperature while increasing activation energy. Two distinct transition pathways, <em>β→α</em> (Burgers mechanism) and <em>β→ω</em> (collapse mechanism), are identified. Intermediate <em>ω</em>-phase precipitation occurs via two modes: quenched athermal (<em>ω<sub>ath</sub></em>) through a diffusionless process, and aged isothermal (<em>ω<sub>iso</sub></em>) companied with solute redistribution. A quantitative correlation between composition, phase constitution, and kinetics is established, providing insights into nonequilibrium phase transitions in multicomponent alloys. The reported phase transition mechanisms involving BCC↔HCP / BCC↔<em>ω</em> offering a framework for phase engineering in TiZrHfNb-based systems.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"268 ","pages":"Article 116883"},"PeriodicalIF":5.3,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144633783","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}

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SymPlex plots for visualizing properties in high-dimensional alloy spaces 用于在高维合金空间中可视化性能的SymPlex图

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-07-14 DOI: 10.1016/j.scriptamat.2025.116840

John Cavin , Pravan Omprakash , Adrien Couet , Rohan Mishra

引用次数: 0

Power-law aging strengthening by local chemical ordering in (CoCrNi)93Al4Ti2Nb high-entropy alloy 高熵合金（CoCrNi）93Al4Ti2Nb的局部化学有序幂律时效强化

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-07-14 DOI: 10.1016/j.scriptamat.2025.116872

Qian Zhang , Aidong Lan , Huijun Yang , Junwei Qiao , Zhihua Wang

{"title":"Power-law aging strengthening by local chemical ordering in (CoCrNi)93Al4Ti2Nb high-entropy alloy","authors":"Qian Zhang , Aidong Lan , Huijun Yang , Junwei Qiao , Zhihua Wang","doi":"10.1016/j.scriptamat.2025.116872","DOIUrl":"10.1016/j.scriptamat.2025.116872","url":null,"abstract":"<div><div>The incipient plasticity of the (CoCrNi)<sub>93</sub>Al<sub>4</sub>Ti<sub>2</sub>Nb high-entropy alloy, which contains varying degrees of local chemical ordering (LCO), is detected using nanoindentation. Statistical results of the critical strength for incipient plasticity exhibit bimodality. After deconvolution analysis, the average strength and activation volume of each peak reveal that the incipient plasticity is controlled by homogeneous dislocation nucleation and vacancy-induced heterogeneous dislocation nucleation. As the aging time increases, the critical strength for incipient plasticity gradually rises, and the strength increment compared to the homogenized sample follows a power-law relationship with aging time. Given the high similarity with the variation in hardness increment caused by precipitates, it is hypothesized that the evolution of LCO is similar to that of the precipitates. The constant describing the phase transformation type suggests LCO is in the initial phase transformation stage, leading to the inference that LCO may serve as a precursor to the precipitates.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"268 ","pages":"Article 116872"},"PeriodicalIF":5.3,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144631646","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

Structural origin of hot-compression-enhanced mechanical properties of aluminosilicate glass 热压缩增强铝硅酸盐玻璃力学性能的结构成因

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-07-12 DOI: 10.1016/j.scriptamat.2025.116878

Ziming Yan , Zhen Zhang , Madoka Ono , Juanjuan Zhu , Linfeng Ding , Lianjun Wang

{"title":"Structural origin of hot-compression-enhanced mechanical properties of aluminosilicate glass","authors":"Ziming Yan , Zhen Zhang , Madoka Ono , Juanjuan Zhu , Linfeng Ding , Lianjun Wang","doi":"10.1016/j.scriptamat.2025.116878","DOIUrl":"10.1016/j.scriptamat.2025.116878","url":null,"abstract":"<div><div>Hot-compression treatment has emerged as an effective method for improving mechanical properties of oxide glasses. However, the pressure-induced structural changes that are responsible for the enhanced mechanical properties have remained elusive. Using molecular dynamics simulations, we find that increasing pressure significantly improves the fracture toughness and nano-ductility of a calcium aluminosilicate, consistent with experiments. The enhanced mechanical properties can be traced back to the increase of atomic coordination numbers, decrease of oxygen-centered bond angles, as well as reorganization of medium-range structure as seen from the change of network topology. Moreover, our simulations highlight oxygen tri-clusters (<sup>(3)</sup>O) as critical sites for enhancing fracture toughness and nano-ductility, as they are active for dynamic bond rupturing and reformation. These findings help to understand how hot compression alters the structure and mechanical properties of oxide glasses, insights that are crucial for improving mechanical performance of network-forming materials.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"268 ","pages":"Article 116878"},"PeriodicalIF":5.3,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144611547","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

Manipulating microstructure and properties of dense rutile TiO2 through dynamic flash phenomena 利用动态闪光现象调控致密金红石型TiO2的微观结构和性能

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-07-12 DOI: 10.1016/j.scriptamat.2025.116877

Vikaskumar Mishra , Xavier Vendrell , Devinder Yadav

{"title":"Manipulating microstructure and properties of dense rutile TiO2 through dynamic flash phenomena","authors":"Vikaskumar Mishra , Xavier Vendrell , Devinder Yadav","doi":"10.1016/j.scriptamat.2025.116877","DOIUrl":"10.1016/j.scriptamat.2025.116877","url":null,"abstract":"<div><div>This study demonstrates manipulation of microstructure and properties in dense polycrystalline rutile TiO<sub>2</sub> via dynamic flash phenomena. The specimen exhibited intense luminescence throughout the gage section in state of flash. Upon removal of specimen from furnace and exposure to ambient conditions, the luminescence front propagated towards anode, leaving a progressively expanding blackened region (at rate of 6 µm/s) on the specimen. Once luminescence front reached anode, the entire section displayed this blackened phase. Subsequently, a new luminescence front initiated at cathode and propagated towards anode at rate of 40 µm/s. This cyclical migration of luminescence front persisted until the electric field was turned-off. Complete luminescence migration yielded a textured, defect-rich, highly reduced microstructure, resulting in significantly increased conductivity compared to conventionally sintered specimen. This dynamic flash method offers a novel approach to tailor microstructure and properties of dense specimens, with implications for resistive switching devices and designing movable p-n junctions.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"268 ","pages":"Article 116877"},"PeriodicalIF":5.3,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144605939","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

Superb thermal stability and strength in Al/Ti/V-modified Ni-based high-entropy alloy via asymmetric cryo-rolling tailored hierarchical microstructures Al/Ti/ v改性ni基高熵合金通过不对称冷轧定制分层显微组织获得了优异的热稳定性和强度

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-07-11 DOI: 10.1016/j.scriptamat.2025.116875

Renhao Wu , Longfei Xu , Hyojin Park , Shi Woo Lee , Soung Yeoul Ahn , Ji-Su Lee , Haiming Zhang , Yan Peng , Byeong-Joo Lee , Hyoung Seop Kim

{"title":"Superb thermal stability and strength in Al/Ti/V-modified Ni-based high-entropy alloy via asymmetric cryo-rolling tailored hierarchical microstructures","authors":"Renhao Wu , Longfei Xu , Hyojin Park , Shi Woo Lee , Soung Yeoul Ahn , Ji-Su Lee , Haiming Zhang , Yan Peng , Byeong-Joo Lee , Hyoung Seop Kim","doi":"10.1016/j.scriptamat.2025.116875","DOIUrl":"10.1016/j.scriptamat.2025.116875","url":null,"abstract":"<div><div>To meet stringent demands of harsh environment in high-temperature semiconductor manufacturing, advanced Ni-based alloys with superior strength and thermal stability is imperative. This study presents a novel Ni<sub>35</sub>(CrFe)<sub>38</sub>Co<sub>13</sub>(TiV)<sub>8</sub>Al<sub>6</sub> (at. %) high-entropy alloy to strengthen the matrix and enhance thermal stability via precipitate pinning, micro-alloyed with Al, Ti, and V and processed by an asymmetric cryo-rolling pathway. During processing, dynamic recovery is suppressed, leading remarkable grain refinement and achieving an ultrahigh yield strength (> 1.2 GPa). High-temperature thermal exposure tests (650–950 °C for 6 h) demonstrate remarkable resistance to microstructural coarsening and phase decomposition, attributed to second-phase nanoparticles, refined grains, and abundant low-angle grain boundaries. The synergistic combination of compositional optimization and processing innovations overcomes conventional trade-off between ambient strength and thermal stability, demonstrating its potential as a robust structural material for critical components in semiconductor equipment. This work provides a groundbreaking strategy for developing next-generation high-temperature alloys through hierarchical microstructure engineering.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"268 ","pages":"Article 116875"},"PeriodicalIF":5.3,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144596146","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

Coherent intergranular precipitates overcome intermediate-temperature embrittlement of a L12-strengthened medium-entropy alloy 在l12强化中熵合金中，共格的晶间析出物克服了中温脆性

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-07-11 DOI: 10.1016/j.scriptamat.2025.116876

Wenjie Lu , Wenqing Yang , Rui Hu , Xu-Sheng Yang

{"title":"Coherent intergranular precipitates overcome intermediate-temperature embrittlement of a L12-strengthened medium-entropy alloy","authors":"Wenjie Lu , Wenqing Yang , Rui Hu , Xu-Sheng Yang","doi":"10.1016/j.scriptamat.2025.116876","DOIUrl":"10.1016/j.scriptamat.2025.116876","url":null,"abstract":"<div><div>Polycrystalline high/medium entropy alloys (HEA/MEAs) strengthened by dense L1<sub>2</sub>-structured nanoparticles have demonstrated significant promise for high-temperature structural applications. However, their widespread adoption is hindered by severe intergranular embrittlement starting from intermediate temperatures. In our present work, we introduce coherent intergranular D0<sub>19</sub>-structured precipitates into a polycrystalline L1<sub>2</sub>-strengthened MEA to address such thorny problem. Unlike conventional polycrystalline counterparts that suffer from pronounced intergranular embrittlement, the newly developed structure exhibits exceptional resistance to intergranular fracture at an intermediate temperature of 800 °C. At this temperature, our designed alloy exhibits a superior yield strength of ∼ 713 MPa and excellent fracture elongation of ∼ 24.3 %. Microstructural analysis reveals that the enhanced ductility arises from the suppressed cracking by coherent intergranular precipitates, in combination with the high-density heat-assisted twinning facilitated by Nb segregation. These findings provide a novel strategy for the design of high-temperature structural materials.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"268 ","pages":"Article 116876"},"PeriodicalIF":5.3,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144596148","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 theoretical reassessment of the onset of plastic deformation in single crystals: beyond the Estrin-Kubin framework 单晶中塑性变形开始的理论重新评估：超越Estrin-Kubin框架

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-07-11 DOI: 10.1016/j.scriptamat.2025.116870

Bibi Malmal Moshtaghioun , José Antonio Bejarano-Palma , Jesús López-Arenal , Francisco Luis Cumbrera , Diego Gómez-García

{"title":"A theoretical reassessment of the onset of plastic deformation in single crystals: beyond the Estrin-Kubin framework","authors":"Bibi Malmal Moshtaghioun , José Antonio Bejarano-Palma , Jesús López-Arenal , Francisco Luis Cumbrera , Diego Gómez-García","doi":"10.1016/j.scriptamat.2025.116870","DOIUrl":"10.1016/j.scriptamat.2025.116870","url":null,"abstract":"<div><div>Dislocations are the fundamental carriers of plastic deformation in single crystals. Their multiplication, interaction, mutual blocking, and annihilation collectively govern the material’s plastic response across all strain regimes. Classical modeling approaches, such as the Kocks-Mecking and Estrin-Kubin formulations, aim to capture these mechanisms through balance equations for free and blocked dislocations.</div><div>This manuscript develops a mathematical framework enabling an analytical solution to the Estrin-Kubin equations in both the low- and high-strain limits. The analysis reveals that the model’s validity is confined to a narrow range of parameter values. More critically, the dislocation capture term—intended to account for work hardening—fails to reproduce the observed hardening behavior at early strain stages. The theoretical predictions diverge significantly from experimental observations. In response, an alternative model is proposed, which addresses the limitations of the Estrin-Kubin formulation. Notably, the new model preserves inversion symmetry, a fundamental physical property absents in the original equations.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"268 ","pages":"Article 116870"},"PeriodicalIF":5.3,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144596147","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

Dual effects of Ru on TCP phase growth and twinning behavior in a fourth-generation single crystal superalloy at 1100°C/150MPa creep condition 在1100℃/150MPa蠕变条件下，Ru对第四代单晶高温合金TCP相生长和孪晶行为的双重影响

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2025-07-10 DOI: 10.1016/j.scriptamat.2025.116873

Chen Liu, Wenchao Yang, Jiarun Qin, Haitao Fu, Qiang Wang, Zhao Xin, Haijun Su, Lin Liu

引用次数: 0