Progress in Natural Science: Materials International最新文献_第2页

MXene based flexible microheater for enhanced infrared imaging of cerebral blood flow 用于增强脑血流红外成像的基于 MXene 的柔性微加热器

IF 4.8 2区材料科学

Progress in Natural Science: Materials International Pub Date : 2024-10-01 DOI: 10.1016/j.pnsc.2024.07.018

Qinli Ye , Jinghui Lin , Guoxiang Wang , Shuwen Zeng , Tao Jiang , Xiang Gao , Muhammad Danang Birowosuto , Wei Xiong , Chenjie Gu

{"title":"MXene based flexible microheater for enhanced infrared imaging of cerebral blood flow","authors":"Qinli Ye , Jinghui Lin , Guoxiang Wang , Shuwen Zeng , Tao Jiang , Xiang Gao , Muhammad Danang Birowosuto , Wei Xiong , Chenjie Gu","doi":"10.1016/j.pnsc.2024.07.018","DOIUrl":"10.1016/j.pnsc.2024.07.018","url":null,"abstract":"<div><div>Infrared thermography technology is a noninvasiveness and real-time imaging method, it has attracted enormous attentions for blood flow imaging. However, the implementation of infrared thermography technology is still limited by the poor imaging quality caused by the low temperature discrimination between the target blood vessel and background. Herein, we reported a flexible and low-cost MXene based photothermal microheater for enhancing the infrared imaging of blood flow. In the experiment, MXene films with specific thickness was prepared by vacuum filtering different concentrations of MXene colloidal solutions. Thereafter, the microheaters were fabricated by assembling the MXene films on the PU tape/PDMS substrate, and then sealed with another layer of pure PDMS film on the top of MXene film. The photothermal performance of the microheaters were evaluated by using an 808-nm laser as the exciting source. Experimental results show that the optimal microheater (MXene content: 17.5 mg) can reach a safe temperature of 41.5 °C with 43.9 s under the light irradiation of 100 mW·cm<sup>−2</sup>. Moreover, it can be stabilized at the equilibrium temperate for over 25 min. Finally, the above optimal microheater was used to accurately heat the simulated blood vessel. It shows that temperature difference of 3.3 °C can be induced between the heated blood vessel and environment. As a result, it significantly enhances the quality of the infrared imaging of the blood flow in the simulated vascular network.</div></div>","PeriodicalId":20742,"journal":{"name":"Progress in Natural Science: Materials International","volume":"34 5","pages":"Pages 1021-1028"},"PeriodicalIF":4.8,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571317","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

High temperature liquid shock manufacturing of RuNi catalysts for hydrogen evolution reaction 用于氢进化反应的 RuNi 催化剂的高温液态冲击制造技术

IF 4.8 2区材料科学

Progress in Natural Science: Materials International Pub Date : 2024-10-01 DOI: 10.1016/j.pnsc.2024.07.012

Liming Li , Peng Kang , Donghui Feng , Yuguang Zhang , Hangxing Ren , Yanchang Liu , Xiaoya Cui

{"title":"High temperature liquid shock manufacturing of RuNi catalysts for hydrogen evolution reaction","authors":"Liming Li , Peng Kang , Donghui Feng , Yuguang Zhang , Hangxing Ren , Yanchang Liu , Xiaoya Cui","doi":"10.1016/j.pnsc.2024.07.012","DOIUrl":"10.1016/j.pnsc.2024.07.012","url":null,"abstract":"<div><div>Rational design and production of materials for highly effective and environmental-friendly electrocatalytic hydrogen evolution reaction (HER) play a pivotal role in advancing renewable energy utilization. Structural engineering of noble metal nanomaterials can significantly boost catalytic performance through atomic rearrangement, electronic structure modification and surface reactivity modulation. Here, RuNi alloy is synthesized using a novel high temperature liquid shock method (HTLS) with instant Joule heating treatment at 1073 K under the mixed atmosphere of Argon (Ar) and CO. The synthesis process involves an aqueous solution containing metal precursors, capping agents, reductant agents and carbon black. Particularly, the as-prepared RuNi-HTS nanostructures with hexagonal close-packed (<em>hcp</em>) phase demonstrate impressive electrocatalytic HER activity in alkaline conditions, requiring only 28 mV of overpotentials at a current density of 10 mA cm<sup>−2</sup>. Note that the Tafel slope is 159.2 mV dec<sup>−1</sup>. Furthermore, this versatile HTLS method can be extended to synthesize other catalysts, including Ru-HTS, PtRu, and PtZn, all of which show commendable performance for HER as well. This study lays the groundwork for the strategic design and high-throughput synthesis of novel materials with fine-tuned structure and refined size, enabling highly efficient and environmental-friendly electrocatalysis.</div></div>","PeriodicalId":20742,"journal":{"name":"Progress in Natural Science: Materials International","volume":"34 5","pages":"Pages 985-989"},"PeriodicalIF":4.8,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571313","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 polyelectrolyte-induced highly processable pigment-like photonic crystal ink 聚电解质诱导的高可加工颜料状光子晶体墨水

IF 4.8 2区材料科学

Progress in Natural Science: Materials International Pub Date : 2024-10-01 DOI: 10.1016/j.pnsc.2024.07.022

Guangxin Tan , Wenxin Fan , Zhihong Nie , Kunyan Sui

{"title":"A polyelectrolyte-induced highly processable pigment-like photonic crystal ink","authors":"Guangxin Tan , Wenxin Fan , Zhihong Nie , Kunyan Sui","doi":"10.1016/j.pnsc.2024.07.022","DOIUrl":"10.1016/j.pnsc.2024.07.022","url":null,"abstract":"<div><div>Developing a straightforward strategy for constructing highly processable photonic crystals (PCs) is crucial for various applications, yet remains a challenge. Here, we present a simple polyelectrolyte-induced self-assembly strategy for producing novel photonic crystal (PC) inks with outstanding processing flexibility by adding the polyelectrolytes into the ultralow concentration of colloidal nanoparticle solution. The polyelectrolyte can cover the nanoparticles through the hydrogen bond interaction to induce the aggregation and mutual repulsion of them simultaneously, enabling the self-assembly of ultralow concentration (0.01–1.0 v/v%) of nanoparticles into short-range ordered arrays with angle-independent structural colors. The resulting PC inks present unprecedented pigment-like color modulation capacity, as well as ultrahigh freedom in processing methods due to the fact that the rheological behaviors of PC inks can be widely adjusted by varying the properties of polyelectrolytes. Consequently, the PC inks can be easily shaped into complex and exquisite multicolor patterns/3D structures using various techniques, including injection molding, writing, drawing, and 3D printing. This general approach paves the way for quick and scalable production of advanced PC materials deeply required in practical applications.</div></div>","PeriodicalId":20742,"journal":{"name":"Progress in Natural Science: Materials International","volume":"34 5","pages":"Pages 1049-1056"},"PeriodicalIF":4.8,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571237","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

Advancements in the development of liquid organic hydrogen carrier systems and their applications in the hydrogen economy 液态有机氢载体系统的开发进展及其在氢经济中的应用

IF 4.8 2区材料科学

Progress in Natural Science: Materials International Pub Date : 2024-10-01 DOI: 10.1016/j.pnsc.2024.07.021

Alexis Munyentwali , Khai Chen Tan , Teng He

{"title":"Advancements in the development of liquid organic hydrogen carrier systems and their applications in the hydrogen economy","authors":"Alexis Munyentwali , Khai Chen Tan , Teng He","doi":"10.1016/j.pnsc.2024.07.021","DOIUrl":"10.1016/j.pnsc.2024.07.021","url":null,"abstract":"<div><div>The transition towards sustainable and clean energy systems has become a significant concern in the modern world. Hydrogen has the potential to meet the growing energy demands while addressing greenhouse gas emissions. However, one major obstacle in utilizing hydrogen as a fuel is the lack of efficient and cost-effective storage methods. In this regard, liquid organic hydrogen carriers (LOHCs) offer several advantages, including high hydrogen storage capacity, improved safety compared to traditional storage methods, and the ability to transport hydrogen using existing liquid fuels’ infrastructure. This review summarizes advancements in the development of LOHC systems for hydrogen storage, with a focus on the latest and innovative systems such as those based on dehydrogenative coupling reactions, renewable LOHCs from lignocellulosic biomass, and the development of LOHCs from plastic waste recycling. In addition to the material aspect, this contribution also discusses various applications of LOHCs in the broader context of the hydrogen economy, including a recently proposed concept of mixed gas hydrogenation of LOHCs for realizing hydrogen purification and storage in a single process step. By highlighting the main advantages and challenges of each LOHC system and providing future directions in the development of efficient LOHC systems, this review aims to contribute to an extensive understanding and advancement of LOHCs in the evolving hydrogen-based economy.</div></div>","PeriodicalId":20742,"journal":{"name":"Progress in Natural Science: Materials International","volume":"34 5","pages":"Pages 825-839"},"PeriodicalIF":4.8,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571245","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

Three-dimensional quantitative characterization of defects in inconel 625 superalloy based on deep learning image identification 基于深度学习图像识别的 inconel 625 超级合金缺陷三维定量表征

IF 4.8 2区材料科学

Progress in Natural Science: Materials International Pub Date : 2024-10-01 DOI: 10.1016/j.pnsc.2024.07.015

Wenyu Zhang , Qun Ren , Weihao Wan , Mengru Shi , Xiaofen Zhang , Lei Zhao , Lixia Yang , Cheng Zhong , Suran Liu , Song Chai , Yaxin Ma , Haizhou Wang

{"title":"Three-dimensional quantitative characterization of defects in inconel 625 superalloy based on deep learning image identification","authors":"Wenyu Zhang , Qun Ren , Weihao Wan , Mengru Shi , Xiaofen Zhang , Lei Zhao , Lixia Yang , Cheng Zhong , Suran Liu , Song Chai , Yaxin Ma , Haizhou Wang","doi":"10.1016/j.pnsc.2024.07.015","DOIUrl":"10.1016/j.pnsc.2024.07.015","url":null,"abstract":"<div><div>Three-dimensional (3D) quantitative characterization of defects in superalloys is an important way to promote the ability of material design and service life prediction. In this work, 3D spatial distribution of defects for Inconel 625 superalloy manufactured by laser additive manufacturing (LAM) is carried out deep learning (DL) image identification technology and 3D image reconstruction. Firstly, computer tomography (CT) technology was used to obtain continuous slice images of sample. The U-net DL algorithm was applied to intelligently identify material defects in the continuous slices. On this basis, quantitative identification and analysis of spatial defect positions and typical sizes is achieved by using 3D reconstruction software. Compared with traditional threshold segmentation (TS) techniques, the defect recognition rate has significantly improved from 61.90 % to 95.00 %. This work provides a promising characterization method for efficient characterizing alloy defects and damage especially during material performance evaluation.</div></div>","PeriodicalId":20742,"journal":{"name":"Progress in Natural Science: Materials International","volume":"34 5","pages":"Pages 1000-1008"},"PeriodicalIF":4.8,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571315","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

The current research status and prospects of AI in chemical science 人工智能在化学科学中的研究现状与前景

IF 4.8 2区材料科学

Progress in Natural Science: Materials International Pub Date : 2024-10-01 DOI: 10.1016/j.pnsc.2024.08.003

Minghao Yuan , Qinglang Guo , Yingxue Wang

{"title":"The current research status and prospects of AI in chemical science","authors":"Minghao Yuan , Qinglang Guo , Yingxue Wang","doi":"10.1016/j.pnsc.2024.08.003","DOIUrl":"10.1016/j.pnsc.2024.08.003","url":null,"abstract":"<div><div>This paper primarily examines the utilization and obstacles of AI in the domain of chemistry. Machine learning facilitates the advancement of chemical research at every level through the use of AI. AI has significantly contributed to enhancing the efficiency of chemical experiments and manufacturing, as well as reducing costs, throughout the many phases of chemical study, application, and production. Its impact is particularly notable in the development of new materials and the discovery of drugs. Nevertheless, the implementation of AI in the domain of chemistry encounters numerous obstacles, including inadequate data quality, limited model interpretability, and data privacy concerns. To address these issues, it is imperative for the scientific and technological community to foster multidisciplinary collaboration, develop a more comprehensive and practical AI framework, and investigate more secure data security technologies. In the future, as AI continues to advance, the relationship between AI and chemical research will become more dependable and intimate. This will lead to increased efficiency, safety, and cost-effectiveness in chemical research, ushering in a new era in the field of chemistry.</div></div>","PeriodicalId":20742,"journal":{"name":"Progress in Natural Science: Materials International","volume":"34 5","pages":"Pages 859-872"},"PeriodicalIF":4.8,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571247","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

Unlocking Co3O4–ZnO p-n heterojunction for superior acetone gas sensing detection 揭开 Co3O4-ZnO p-n 异质结的神秘面纱，实现卓越的丙酮气体传感检测功能

IF 4.8 2区材料科学

Progress in Natural Science: Materials International Pub Date : 2024-10-01 DOI: 10.1016/j.pnsc.2024.07.014

Xingxing Liu , Tingting Shao , Juntang Dong , Huirong Kou , Fuchun Zhang , Yuyang Cheng , Jiaming Guo , Shuwei Tian , Kuldeep K. Saxena , Xinghui Liu

{"title":"Unlocking Co3O4–ZnO p-n heterojunction for superior acetone gas sensing detection","authors":"Xingxing Liu , Tingting Shao , Juntang Dong , Huirong Kou , Fuchun Zhang , Yuyang Cheng , Jiaming Guo , Shuwei Tian , Kuldeep K. Saxena , Xinghui Liu","doi":"10.1016/j.pnsc.2024.07.014","DOIUrl":"10.1016/j.pnsc.2024.07.014","url":null,"abstract":"<div><div>In this study, we synthesized pure ZnO and Co<sub>3</sub>O<sub>4</sub>–ZnO precursors with varied Co, Zn ratios via solvothermal method, and then the precursors were calcined at 400 °C for 2 h in a muffle furnace under air to obtain composites for acetone detection. The structure, morphology, elemental composition, microstructure and chemical state of these materials were systematically studied by various characterization techniques. Additionally, we also evaluated the gas sensing performance of the composites-based sensors, focusing on optimal operating temperature, baseline resistance, repeatability, stability, selectivity, response/recovery time, and resistance under varying relative humidity. The findings reveal that 3 % Co<sub>3</sub>O<sub>4</sub>–ZnO-based sensor exhibit the highest response value to 100 ppm acetone (74), showing an enhancement of approximately 9.3 times compared to the pure ZnO-based sensor (8). Furthermore, the 3 % Co<sub>3</sub>O<sub>4</sub>–ZnO-based sensor demonstrate the advantages of rapid response/recovery times (15 s/2 s), outstanding selectivity, and remarkable stability. The gas sensing mechanism of the composite material is also discussed in detail, which provides insights into the observed enhancement of gas sensing performance. It provides an idea for the follow-up study on gas sensing performance of acetone sensors.</div></div>","PeriodicalId":20742,"journal":{"name":"Progress in Natural Science: Materials International","volume":"34 5","pages":"Pages 990-999"},"PeriodicalIF":4.8,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571314","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

Investigation into the stress‒strain compatibility and fracture behaviour of a TC18 titanium alloy with a multistage lamellar microstructure 具有多级片状微结构的 TC18 钛合金的应力-应变兼容性和断裂行为研究

IF 4.8 2区材料科学

Progress in Natural Science: Materials International Pub Date : 2024-10-01 DOI: 10.1016/j.pnsc.2024.07.020

Zhongxiang Li , Zhaoxin Du , Jun Cheng , Zhiyong Yue , Tianhao Gong , Xudong Kang , Yongcheng Zhu

{"title":"Investigation into the stress‒strain compatibility and fracture behaviour of a TC18 titanium alloy with a multistage lamellar microstructure","authors":"Zhongxiang Li , Zhaoxin Du , Jun Cheng , Zhiyong Yue , Tianhao Gong , Xudong Kang , Yongcheng Zhu","doi":"10.1016/j.pnsc.2024.07.020","DOIUrl":"10.1016/j.pnsc.2024.07.020","url":null,"abstract":"<div><div>Understanding the fracture mechanism is essential for optimizing the mechanical properties of titanium alloys. The relationship between fracture behaviour and the multistage lamellar microstructure of the TC18 (Ti–5Al–5Mo–5V–1Cr–1Fe) alloy was investigated via in situ tensile and three-point bending tests. The results indicate that the TC18 alloy, featuring a multistage lamellar microstructure (including a β matrix, primary lamellar α phase, bundles, and secondary lamellar α phase), exhibits an excellent combination of strength and ductility. The precipitation of the secondary lamellar α phase significantly enhances the alloy's strength but weakens the stress‒strain compatibility of the microstructure. This results in a smaller crack-tip plastic zone (CTPZ) and causes dislocations to concentrate more at the grain boundaries and, to a lesser extent, at the phase interfaces. Consequently, in the later stages of crack propagation, microvoids and microcracks tend to form at dislocation pile-ups. With increasing stress, these microvoids and microcracks rapidly coalesce, leading to a greater proportion of intergranular fracture and thus reducing the fracture toughness of the alloy.</div></div>","PeriodicalId":20742,"journal":{"name":"Progress in Natural Science: Materials International","volume":"34 5","pages":"Pages 1039-1048"},"PeriodicalIF":4.8,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571195","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

Hot deformation behavior and dynamic recrystallization of 2195 Al–Li alloy with various pre-precipitation microstructures 具有不同预沉积微观结构的 2195 Al-Li 合金的热变形行为和动态再结晶

IF 4.8 2区材料科学

Progress in Natural Science: Materials International Pub Date : 2024-10-01 DOI: 10.1016/j.pnsc.2024.07.003

Rong Fu , Hongbang Shao , Yuanchun Huang , Yu Liu , Hui Li

{"title":"Hot deformation behavior and dynamic recrystallization of 2195 Al–Li alloy with various pre-precipitation microstructures","authors":"Rong Fu , Hongbang Shao , Yuanchun Huang , Yu Liu , Hui Li","doi":"10.1016/j.pnsc.2024.07.003","DOIUrl":"10.1016/j.pnsc.2024.07.003","url":null,"abstract":"<div><div><span><span><span>In this work, 2195 Al–Li alloys with various precipitation microstructures were obtained by homogenization treatment followed by air-cooling (AC), discontinuous cooling (DC), and furnace-cooling (FC), and then tested by hot compression at different temperatures. The results show that the flow stresses of all specimens decrease with temperature and the peak stresses of AC, DC and FC specimens decrease in order at the same temperature. For FC samples, coarse pre-precipitates diminish the </span>deformation resistance due to the reduction of </span>solid solution strengthening and precipitation strengthening. Dynamic softening at low temperatures is significantly greater than that at high temperatures, except for the anomalous softening of the FC specimen at 520 °C due to stress release by cracks. At 370–420 °C, the dynamic softening of the AC specimen is more significant than the other samples, resulting from dynamic precipitation and precipitate coarsening. Furthermore, there is considerable </span>dynamic recrystallization<span> (DRX) in FC samples and not in AC and DC samples, although their precipitates coarsen to similar levels at low temperatures. This suggests that DRX is associated with the particle-stimulated nucleation mechanism<span> by regularly arranged precipitates. The banded or regularly arranged precipitates divide the Al matrix into multiple confined units, hindering dislocations and (sub)grain boundary movement, and thus promoting the development of sub-grains and DRX.</span></span></div></div>","PeriodicalId":20742,"journal":{"name":"Progress in Natural Science: Materials International","volume":"34 5","pages":"Pages 955-966"},"PeriodicalIF":4.8,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141839459","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

Insight into element segregation mechanisms during creep in γʹ-strengthened Co-based superalloy by elastoplastic phase-field simulation 通过弹塑性相场模拟深入了解γʹ强化钴基超合金蠕变过程中的元素偏析机制

IF 4.8 2区材料科学

Progress in Natural Science: Materials International Pub Date : 2024-10-01 DOI: 10.1016/j.pnsc.2024.05.013

Jia Chen, Min Guo, Min Yang, Tingting Cui, Borong Cui, Jun Zhang

{"title":"Insight into element segregation mechanisms during creep in γʹ-strengthened Co-based superalloy by elastoplastic phase-field simulation","authors":"Jia Chen, Min Guo, Min Yang, Tingting Cui, Borong Cui, Jun Zhang","doi":"10.1016/j.pnsc.2024.05.013","DOIUrl":"10.1016/j.pnsc.2024.05.013","url":null,"abstract":"<div><div><span>The element segregation accompanying the creep process has been shown to significantly affect the deformation resistance of the </span>superalloys<span>. However, the processing and mechanism of element segregation are still unclear. This paper investigated the concentration evolution of a model Co–9Al–9W (at. %) alloy during 900 °C/275 MPa using developed ternary elastoplastic phase-field model coupled with CALPHAD method and crystal plasticity<span> model. The results of simulation show that co-depletion of Al and W element occurs in γʹ precipitate and in γ side at γ/γʹ interface, and this depletion is gradually increasing with the accumulation of plastic strain. From the perspective of changes of driving force of element diffusion, it is found that these segregation phenomena are attributed to the high elastic potential caused by the large local plastic strain. In addition, the effects of these segregations on creep property are also predicted. The current research provides a new method for exploring the mechanism of element diffusion.</span></span></div></div>","PeriodicalId":20742,"journal":{"name":"Progress in Natural Science: Materials International","volume":"34 5","pages":"Pages 873-879"},"PeriodicalIF":4.8,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571248","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