Scripta Materialia最新文献_第5页

The augmented potential method: Multiscale modeling toward a spectral defect genome 增强电位法：多尺度光谱缺陷基因组建模

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2025-09-09 DOI: 10.1016/j.scriptamat.2025.116969

Nutth Tuchinda , Changle Li , Christopher A. Schuh

引用次数: 0

A case for non-steady-state grain growth kinetics 非稳态晶粒生长动力学的一个例子

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2025-09-09 DOI: 10.1016/j.scriptamat.2025.116963

Shen J. Dillon

引用次数: 0

A novel refractory complex concentrated alloy with ultra-high strength at 1200°C 一种1200℃下具有超高强度的新型难熔复合浓缩合金

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2025-09-08 DOI: 10.1016/j.scriptamat.2025.116982

N. Yurchenko , V. Mirontsov , E. Mishunina , E. Kochura , N. Stepanov

引用次数: 0

Thermodynamic modeling and experimental study of protective barriers against carbon diffusion during spark plasma sintering process 放电等离子烧结过程中碳扩散防护屏障的热力学建模与实验研究

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2025-09-08 DOI: 10.1016/j.scriptamat.2025.116983

R. Charvet , M.R. Ardigo-Besnard , A. Besnard , F. Baras , S. Le Gallet , Y. Pinot , F. Herbst , F. Bernard

{"title":"Thermodynamic modeling and experimental study of protective barriers against carbon diffusion during spark plasma sintering process","authors":"R. Charvet , M.R. Ardigo-Besnard , A. Besnard , F. Baras , S. Le Gallet , Y. Pinot , F. Herbst , F. Bernard","doi":"10.1016/j.scriptamat.2025.116983","DOIUrl":"10.1016/j.scriptamat.2025.116983","url":null,"abstract":"<div><div>During spark plasma sintering (SPS), the contact between the graphite tooling and the powder results in carbon diffusion. Graphite foils coated with a physical vapor deposition (PVD) film represent a promising solution to overcome this issue. In the present work, simulation and experiments were combined to understand the barrier effectiveness against carbon diffusion of a titanium PVD film deposited on graphite foils used during SPS of an iron powder. In non-equilibrium processes, simulation alone is insufficient to describe the multiple diffusion scenarios. On the other hand, experimental measurements are not always relevant. The approach adopted in this work enabled the prediction of the potential phases that form as a function of diffusion depth. Several scenarios were proposed, helping to explain the influence of the film thickness. This methodology, applied to the C-Ti-Fe system, can be extended to other film-substrate couples, reducing the number of tests and the associated costs.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"271 ","pages":"Article 116983"},"PeriodicalIF":5.6,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145020476","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

Impact of atomic couples and pairs on quenched-in vacancies in Al-Mg-Si-Cu alloys 原子偶和原子对Al-Mg-Si-Cu合金中淬火空位的影响

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2025-09-06 DOI: 10.1016/j.scriptamat.2025.116970

Ya Li , Robert Kahlenberg , Philipp Retzl , Yao V. Shan , Yong Du , Ernst Kozeschnik

{"title":"Impact of atomic couples and pairs on quenched-in vacancies in Al-Mg-Si-Cu alloys","authors":"Ya Li , Robert Kahlenberg , Philipp Retzl , Yao V. Shan , Yong Du , Ernst Kozeschnik","doi":"10.1016/j.scriptamat.2025.116970","DOIUrl":"10.1016/j.scriptamat.2025.116970","url":null,"abstract":"<div><div>After solutionizing and quenching of Al-Mg-Si-Cu alloys at cooling rates differing by a factor of about 200, the quenched-in vacancy concentration difference as measured by positron annihilation lifetime spectrometry is only about 30 times. This contradicts the expected ∼200 times difference predicted by the recently developed <em>FSAK</em> model for vacancy generation and annihilation at dislocation jogs and grain boundaries. To address this discrepancy, we investigate the influence of atomic couples and pairs (C&Ps) on the quenched-in vacancy concentration. A combined theoretical framework incorporating C&Ps formation kinetics and vacancy trapping is developed and applied to an Al-Mg-Si-Cu alloy. The results indicate that Si-Si pairs in Al-Mg-Si-Cu alloys act as primary vacancy traps during quenching, capturing significantly more vacancies than isolated solutes. The simulations satisfactorily explain the experimentally measured ∼30 times difference in quenched-in vacancy concentration compared to the much larger difference predicted in the absence of vacancy trapping on C&Ps.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"271 ","pages":"Article 116970"},"PeriodicalIF":5.6,"publicationDate":"2025-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145005166","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

Unit-level hardening-driven strengthening in gradient nanotwinned Cu 梯度纳米孪晶Cu的单位级硬化驱动强化

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2025-09-05 DOI: 10.1016/j.scriptamat.2025.116973

Linhai Liu , Che Liu , Jin Zheng , Zhao Cheng , Lei Lu

引用次数: 0

Leveraging high-energy X-Ray diffraction microscopy and crystal plasticity simulations to study grain scale stress redistribution within a Ti-7Al sample subjected to creep 利用高能x射线衍射显微镜和晶体塑性模拟研究蠕变下Ti-7Al样品的晶粒尺度应力重新分布

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2025-09-04 DOI: 10.1016/j.scriptamat.2025.116954

Saikumar R. Yeratapally , Diwakar Naragani , Paul Shade , Armand Beaudoin , George Weber , Matthew Kasemer , Edward H. Glaessgen

{"title":"Leveraging high-energy X-Ray diffraction microscopy and crystal plasticity simulations to study grain scale stress redistribution within a Ti-7Al sample subjected to creep","authors":"Saikumar R. Yeratapally , Diwakar Naragani , Paul Shade , Armand Beaudoin , George Weber , Matthew Kasemer , Edward H. Glaessgen","doi":"10.1016/j.scriptamat.2025.116954","DOIUrl":"10.1016/j.scriptamat.2025.116954","url":null,"abstract":"<div><div>A series of far-field high-energy X-Ray diffraction microscopy (ff-HEDM) measurements gathered at discrete temporal points from the illuminated gage section of a Ti-7Al coupon subjected to creep revealed significant stress relaxation in soft grains neighboring a hard grain. A crystal plasticity finite element (CPFE) framework was used to perform a creep simulation on the tessellated volume of the gage section of the coupon based on the grain centroid data obtained from ff-HEDM. For a contiguous hard and soft grain pair, a correlation was found between grain-average stress relaxation (measured from experiments) and total accumulated slip (estimated from CPFE simulations). However, the magnitude of stress relaxation from CPFE simulation was significantly underpredicted due to the inherent homogeneous nature of the crystal plasticity framework which cannot resolve the mechanisms underpinning events (e.g., intermittent motion of dislocations, slip band formation, precipitate shearing, etc.) leading to stress relaxation in grains.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"271 ","pages":"Article 116954"},"PeriodicalIF":5.6,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997467","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

Thermal conductivity measurement of U-Mo and U-Mo/Al interaction layers generated from in-pile irradiation using the suspended-bridge method 用悬索桥法测量桩内辐照产生的U-Mo和U-Mo/Al相互作用层的导热系数

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2025-09-04 DOI: 10.1016/j.scriptamat.2025.116972

Shipeng Shu , Yinbin Miao , Bei Ye , Peter Mouche , Kun Mo , Laura Jamison , Abdellatif M. Yacout , Daniele Salvato , William Hanson , Adam Robinson , Rifat Mahmud , L. Amulya Nimmagadda , Sanjiv Sinha

{"title":"Thermal conductivity measurement of U-Mo and U-Mo/Al interaction layers generated from in-pile irradiation using the suspended-bridge method","authors":"Shipeng Shu , Yinbin Miao , Bei Ye , Peter Mouche , Kun Mo , Laura Jamison , Abdellatif M. Yacout , Daniele Salvato , William Hanson , Adam Robinson , Rifat Mahmud , L. Amulya Nimmagadda , Sanjiv Sinha","doi":"10.1016/j.scriptamat.2025.116972","DOIUrl":"10.1016/j.scriptamat.2025.116972","url":null,"abstract":"<div><div>This study presents the first measurements of the individual thermal conductivities of U-7 wt.%Mo fuel particles and U-Mo/Al interaction layers (ILs) from in-pile-irradiated dispersion fuel plates using the suspended-bridge method. Nanorods of U-7 wt.%Mo fuel and U-Mo/Al ILs were extracted by focused ion beam (FIB), and their microstructures were characterized with transmission electron microscopy (TEM). TEM revealed finely distributed nanobubbles in the U-7 wt.%Mo matrix, along with an amorphous structure in the ILs. The thermal conductivity of in-pile-irradiated U-7 wt.%Mo was approximately 30 % lower than that of the unirradiated material, ranging from 6.7 W/m·K at 300 K to 8.5 W/m·K at 380 K. The ILs exhibited even lower thermal conductivity, from 2.1 W/m·K at 300 K to 2.7 W/m·K at 380 K. These reductions, attributed to nanobubbles, fission products, and irradiation-induced point defects, were analyzed through a combination of microstructural characterization and literature-based transport models, which successfully reproduced the observed degradation trends.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"271 ","pages":"Article 116972"},"PeriodicalIF":5.6,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144989829","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

Hydride stacking structure and phase transformation of hydride dissolution induced by thermal transient in zirconium alloys 锆合金中氢化物堆积结构及热瞬态诱导氢化物溶解相变

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2025-09-02 DOI: 10.1016/j.scriptamat.2025.116967

Yao Wang , Jinrui Zhang , Runhao Zhang , Senmao Liang , Junlei Yin , Weijia Gong

{"title":"Hydride stacking structure and phase transformation of hydride dissolution induced by thermal transient in zirconium alloys","authors":"Yao Wang , Jinrui Zhang , Runhao Zhang , Senmao Liang , Junlei Yin , Weijia Gong","doi":"10.1016/j.scriptamat.2025.116967","DOIUrl":"10.1016/j.scriptamat.2025.116967","url":null,"abstract":"<div><div>Zirconium hydrides that significantly degrade mechanical properties of nuclear fuel claddings are commonly expected to consist of individual nano-hydride platelets. However, their internal microstructure and the associated platelet stacking remain ambiguous. This work reports a backbone structure characteristic of δ-hydrides identified during their partial dissolution induced by the thermal transient of electrical discharge machining. The backbone structure is characterized as acicular hydrides with discrete separating distances, between which the nano α-Zr subgrains in the original hydride domain present a distinct crystallographic orientation with that of the α-parent grain, indicating the δ→α transformation process of hydride dissolution. The subgrain orientation variation can be attributed to the phase transformation accomplished on the inconsistent δ-{111} planes with hydride precipitation. The presented results are expected to provide solid experimental evidences for hydride stacking structure and new insights into hydride dissolution/precipitation behavior in zirconium alloys.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"270 ","pages":"Article 116967"},"PeriodicalIF":5.6,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144925851","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

Exponentially strong leakage current increase in the proton-irradiated silicon nitride 质子辐照氮化硅时漏电流呈指数级增加

IF 5.6 2区材料科学

Scripta Materialia Pub Date : 2025-09-01 DOI: 10.1016/j.scriptamat.2025.116968

A.A. Gismatulin , V.A. Gritsenko

引用次数: 0