Scripta Materialia最新文献_第4页

Recipients of the 2023 Acta Materialia, inc. student awards Acta Materialia 公司 2023 年度学生奖获得者

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2024-10-22 DOI: 10.1016/j.scriptamat.2024.116408

引用次数: 0

Plastic slip mechanisms in high-temperature titanium alloys: Insights into silicide and Ti3Al precipitates on ductility 高温钛合金的塑性滑移机制：硅化物和 Ti3Al 沉淀对延展性的影响

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2024-10-21 DOI: 10.1016/j.scriptamat.2024.116412

Heqing Zhang , Changjiang Zhang , Xiaojian Liang , Ruipeng Guo , Hong Feng , Zhaoping Hou , Jianchao Han , Min Cheng , Shuzhi Zhang , Tao Wang , Peng Cao

引用次数: 0

Rejuvenation of La-based metallic glass by controlling different modes of relaxation 通过控制不同的弛豫模式使 La 基金属玻璃年轻化

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2024-10-19 DOI: 10.1016/j.scriptamat.2024.116418

Yifan Yang, Jing Geng, Yunwei Cao, Li Fan, Bo Shi

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Blacklight sintering of BaZrO3-based proton conductors 黑光烧结基于 BaZrO3 的质子导体

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2024-10-17 DOI: 10.1016/j.scriptamat.2024.116414

Julian N. Ebert , Dylan Jennings , Olivier Guillon , Wolfgang Rheinheimer

{"title":"Blacklight sintering of BaZrO3-based proton conductors","authors":"Julian N. Ebert , Dylan Jennings , Olivier Guillon , Wolfgang Rheinheimer","doi":"10.1016/j.scriptamat.2024.116414","DOIUrl":"10.1016/j.scriptamat.2024.116414","url":null,"abstract":"<div><div>Acceptor-doped BaZrO<sub>3</sub>, a ceramic proton conductor, is well researched for use in solid oxide fuel cells due to its proton conductivity and chemical stability. A major drawback of the material is the difficulty of sintering as it requires high sintering temperatures and long heating times (> 1600 °C, 24 h). An emerging sintering technology to mitigate this challenge is blacklight sintering, which uses a high-powered blue or UV light source to heat ceramics extremely fast leading to short sintering times and reduced energy demand. In this work, BaZr<sub>0.8</sub>Y<sub>0.2</sub>O<sub>3-δ</sub> (BZY20) and BaZr<sub>0.8</sub>Y<sub>0.1</sub>Sc<sub>0.1</sub>O<sub>3-δ</sub> (BZY10Sc10) were blacklight-sintered with a high-power blue laser in under four minutes. Even though the resulting samples have a gradient from large to small grains and structurally disordered grain boundaries, the proton conductivity is comparable to conventionally sintered samples. Hence, blacklight sintering is a promising technology with the potential to sinter BaZrO<sub>3</sub> much faster, while saving energy.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"256 ","pages":"Article 116414"},"PeriodicalIF":5.3,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142446415","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

Developing neural networks to rapidly map crystallographic orientation using laser ultrasound measurements 开发神经网络，利用激光超声测量快速绘制晶体学取向图

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2024-10-17 DOI: 10.1016/j.scriptamat.2024.116415

Rikesh Patel, Wenqi Li, Richard J. Smith, Matt Clark

{"title":"Developing neural networks to rapidly map crystallographic orientation using laser ultrasound measurements","authors":"Rikesh Patel, Wenqi Li, Richard J. Smith, Matt Clark","doi":"10.1016/j.scriptamat.2024.116415","DOIUrl":"10.1016/j.scriptamat.2024.116415","url":null,"abstract":"<div><div>Rapid measurement of crystal orientation is critical in the materials discovery process as it facilitates real-time decision-making and quality control. Acoustic inspection methods rapidly characterise microstructure without the need for extensive infrastructure or expense – the laser ultrasonic method known as Spatially Resolved Acoustic Spectroscopy (SRAS) has been developed with this intent and accurately characterises crystal orientation by leveraging a combination of forward modelling and an exhaustive brute force process to obtain the best-fit orientation. While effective, this method is computationally demanding and time-intensive. We introduce a novel approach that utilises neural networks to classify measured acoustic signals into orientation planes to significantly expedite the characterisation process and demonstrate classification on real-world Inconel 617 and CMX4 specimens. A reduction in the orientation determination time from around 10 hours (brute force search) down to 15 seconds (neural network) was achieved while exhibiting an average plane angle difference of between 5.3<sup>∘</sup> and 13.8<sup>∘</sup>.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"256 ","pages":"Article 116415"},"PeriodicalIF":5.3,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142446416","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

In-situ transmission electron microscopy investigation of the deformation mechanism in CoCrNi and CoCrNiSi0.3 nanopillars 钴铬镍和钴铬镍硅 0.3 纳米柱变形机制的原位透射电子显微镜研究

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2024-10-15 DOI: 10.1016/j.scriptamat.2024.116405

Cheng-Ling Tai , Jhen-De You , Jia-Jun Chen , Shu-Cheng Liang , Tsai-Fu Chung , Yo-Lun Yang , Seiichiro Ii , Takahito Ohmura , Xiaoyang Zheng , Chih-Yuan Chen , Jer-Ren Yang

{"title":"In-situ transmission electron microscopy investigation of the deformation mechanism in CoCrNi and CoCrNiSi0.3 nanopillars","authors":"Cheng-Ling Tai , Jhen-De You , Jia-Jun Chen , Shu-Cheng Liang , Tsai-Fu Chung , Yo-Lun Yang , Seiichiro Ii , Takahito Ohmura , Xiaoyang Zheng , Chih-Yuan Chen , Jer-Ren Yang","doi":"10.1016/j.scriptamat.2024.116405","DOIUrl":"10.1016/j.scriptamat.2024.116405","url":null,"abstract":"<div><div>CoCrNi and CoCrNiSi<sub>0.3</sub> nanopillars exhibited distinct deformation behaviors under in-situ compression experiments with a strain rate of 2 × 10<sup>–3</sup> s<sup>-1</sup> in a transmission electron microscope. The former was mainly deformed through slip-dislocations and the formation of slip-bands with edges extending to the nanopillar's boundaries; in contrast, the latter was primarily deformed by twinning and partitioned by deformation nanotwins, with different variants intersecting each other to form closed nano-blocks. Si addition not only enhanced the solid solution strengthening effect but also facilitated the formation of nanotwins, resulting in a delayed first strain burst in the CoCrNiSi<sub>0.3</sub> nanopillar at a strain of 9.6 % with strength 39 % higher than that in CoCrNi at a strain of 7.1 % during the in-situ deformation. In addition, closed nano-blocks effectively strengthened the CoCrNiSi<sub>0.3</sub> nanopillar, which possessed strength 24 % higher than that of the CoCrNi nanopillar at the same strain of ∼20 %.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"255 ","pages":"Article 116405"},"PeriodicalIF":5.3,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432037","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

FIP-GNN: Graph neural networks for scalable prediction of grain-level fatigue indicator parameters FIP-GNN：用于可扩展晶粒级疲劳指标参数预测的图神经网络

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2024-10-15 DOI: 10.1016/j.scriptamat.2024.116407

Gyu-Jang Sim , Myoung-Gyu Lee , Marat I. Latypov

引用次数: 0

Refractory multi-principal element alloys with solution and aged HfRu-B2 precipitates 含溶液和时效 HfRu-B2 沉淀的多主量元素难熔合金

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2024-10-14 DOI: 10.1016/j.scriptamat.2024.116411

Carolina Frey , Benjamin Neuman , Anthony Botros , Sebastian A. Kube , Tresa.M. Pollock

{"title":"Refractory multi-principal element alloys with solution and aged HfRu-B2 precipitates","authors":"Carolina Frey , Benjamin Neuman , Anthony Botros , Sebastian A. Kube , Tresa.M. Pollock","doi":"10.1016/j.scriptamat.2024.116411","DOIUrl":"10.1016/j.scriptamat.2024.116411","url":null,"abstract":"<div><div>Ru-based B2 phases have shown promise as strengthening precipitates in refractory alloys due to their high (≥ 1600°C) solvus temperatures. Of the Ru-based B2 phases, the HfRu-B2 phase is the most thermally stable and a solution and ageable BCC + HfRu-B2 alloy has yet to be reported. Three HfRu-containing refractory alloys were arc-melted and their phase equilibria investigated from 1300-1900°C: Ta<sub>30</sub>Mo<sub>28</sub>Nb<sub>22</sub>Hf<sub>11</sub>Ru<sub>9</sub>, Nb<sub>52</sub>Mo<sub>28</sub>Hf<sub>11</sub>Ru<sub>9</sub>, and Nb<sub>52</sub>V<sub>28</sub>Hf<sub>11</sub>Ru<sub>9</sub> (at%). Scanning electron microscopy was used to characterize the microstructures after annealing. In all alloys, a HfRu-B2 phase was present as precipitates embedded in a disordered BCC phase. The HfRu-B2 phase was stable up to 1750°C and additional Hf- and V-rich phases were stable at 1300°C. After slow cooling, the HfRu-B2 precipitates in Nb<sub>52</sub>V<sub>28</sub>Hf<sub>11</sub>Ru<sub>9</sub> evolved in morphology from spheres to cubes to cuboidal arrays with increasing aging time, characteristic of a low misfit between the HfRu-B2 and BCC phases.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"255 ","pages":"Article 116411"},"PeriodicalIF":5.3,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432036","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

Enhanced compensation effect of Gd and Dy in 2:17-type SmCo magnets 2:17 型钐钴磁体中钆和镝的增强补偿效应

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2024-10-13 DOI: 10.1016/j.scriptamat.2024.116406

Hongyang Dai , Jiayi Huang , Shulan Zuo, Mingyao Hu, Lei Yang, Jinghua Liu, Chengbao Jiang

{"title":"Enhanced compensation effect of Gd and Dy in 2:17-type SmCo magnets","authors":"Hongyang Dai , Jiayi Huang , Shulan Zuo, Mingyao Hu, Lei Yang, Jinghua Liu, Chengbao Jiang","doi":"10.1016/j.scriptamat.2024.116406","DOIUrl":"10.1016/j.scriptamat.2024.116406","url":null,"abstract":"<div><div>The maximum magnetic energy product ((<em>BH</em>)<sub>max</sub>) of 2:17-type SmCo magnets with low temperature coefficient (<em>α</em>), prepared by partially substituting Sm with heavy rare-earth elements (HREs), are lower than that of conventional magnets. Optimizing their magnetic properties by harnessing complementary advantages of different HREs is an effective approach that warrants further study. This study unveils an enhanced compensation effect of co-doping Gd and Dy elements in SmCo magnets, which becomes significant as the total content of Gd and Dy increases. Specifically, when the co-doping level of Gd and Dy reaches 10.3 wt%, there is a significant improvement of 71 % in (<em>BH</em>)<sub>max</sub> compared to doping with 10.3 wt% Dy alone, while maintaining a comparable <em>α</em> value. Microstructure and microchemistry analysis, along with first principles calculations reveal that this effect is closely associated with the enrichment of Dy in cell 2:17R phases. This finding holds significance for designing temperature-stable SmCo magnets.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"255 ","pages":""},"PeriodicalIF":5.3,"publicationDate":"2024-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418086","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 high gravity on the nucleation and precipitation of δ phase of GH4169 alloy 高重力对 GH4169 合金 δ 相成核和析出的影响

IF 5.3 2区材料科学

Scripta Materialia Pub Date : 2024-10-13 DOI: 10.1016/j.scriptamat.2024.116409

Jiahui Wang , Xinbao Zhao , Fangjie You , Quanzhao Yue , Wanshun Xia , Yuefeng Gu , Ze Zhang

引用次数: 0