Journal of Materials Science最新文献_第2页

Microstructure and properties of Cu–Ti matrix composites with in situ dispersive oxide fabricated by internal oxidation process

IF 3.5 3区材料科学

Journal of Materials Science Pub Date : 2025-03-24 DOI: 10.1007/s10853-025-10797-7

Dongxu Hui, Shufeng Li, Daihuiyu Wu, Lei Liu, Shaolong Li, Shaodi Wang, Huiying Liu, Xin Zhang, Bo Li

{"title":"Microstructure and properties of Cu–Ti matrix composites with in situ dispersive oxide fabricated by internal oxidation process","authors":"Dongxu Hui, Shufeng Li, Daihuiyu Wu, Lei Liu, Shaolong Li, Shaodi Wang, Huiying Liu, Xin Zhang, Bo Li","doi":"10.1007/s10853-025-10797-7","DOIUrl":"10.1007/s10853-025-10797-7","url":null,"abstract":"<div><p>Cu–Ti alloy, as a typical aging strengthening alloy, possesses the high strength and wear resistance, widely used in engineering applications. However, the conductivity of Cu–Ti alloy significantly decreases when the content of Ti exceeds 4 wt%, which is due to the scattering effect of lattice distortion of the matrix on electrons caused by the difference in atomic radius between Cu and Ti. The precipitation of in situ dispersive nano-Cu–Ti–O compounds particles and heat treatment is expected to reduce lattice distortion of matrix and improve the strength of materials. We employed Cu<sub>2</sub>O as the oxygen source to generate oxide particles to reinforce Cu–Ti composites through an internal oxidation process. The influence of solid solution time on the microstructure and properties of nano-oxide-reinforced Cu–Ti composites is explored, and the composition of oxide particles is Cu<sub>2</sub>Ti<sub>4</sub>O with a size of approximately 100 nm, which has a good interface bond with matrix. The strength reaches 675 MPa when the solid solution time is 16 h, and the strengthening mechanism and conductivity improvement mechanism were discussed. Actually, Ti atoms precipitated as β′–Cu<sub>4</sub>Ti and Cu<sub>2</sub>Ti<sub>4</sub>O, reducing lattice distortion of the matrix and increasing electrical conductivity after solid solution and aging treatment. This study provides a novel approach for preparing nano-oxide-reinforced Cu–Ti matrix composites.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 13","pages":"5977 - 5995"},"PeriodicalIF":3.5,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143784139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 polypropylene dielectric properties and energy storage with advanced multilayer structures 利用先进的多层结构增强聚丙烯介电性能和储能能力

IF 3.5 3区材料科学

Journal of Materials Science Pub Date : 2025-03-24 DOI: 10.1007/s10853-025-10783-z

Meng Xiao, Xiangyu Dong, Xin Zhang, Boxue Du

{"title":"Enhanced polypropylene dielectric properties and energy storage with advanced multilayer structures","authors":"Meng Xiao, Xiangyu Dong, Xin Zhang, Boxue Du","doi":"10.1007/s10853-025-10783-z","DOIUrl":"10.1007/s10853-025-10783-z","url":null,"abstract":"<div><p>In this paper, PBZ membranes with a PP/BZ sandwich structure were fabricated by incorporating ZnO nanoparticles into bacterial cellulose (BC) to form a functional BZ layer, effectively overcoming the inherent limitations of nanoparticle doping and significantly enhancing the energy storage capacity and high-temperature resistance of polypropylene (PP). The results revealed that the optimal performance was achieved with a ZnO content of 2 wt%. At this concentration, the conductivity decreased by 97.5, 98.9, and 99.6% at 25, 85, and 125 °C, respectively, while the breakdown strength increased by 50.6 kV/mm, 59.7, and 92.0 kV/mm, compared to PP. Additionally, the energy density exhibited an increase of 56.5–106.9% across various temperature ranges. The electrostatic potential and energy level distribution analyses indicated that the unique mesh structure and physical properties of BC effectively restricted the free movement of electrons within the material, reducing leakage current and enhancing the high temperature resistance of the PBZ film, while also preventing undesirable phenomena such as nanoparticle agglomeration.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 13","pages":"5869 - 5881"},"PeriodicalIF":3.5,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143784140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 comparative study of hydrogels based on GO-Cu composites for potential applications in water treatment

IF 3.5 3区材料科学

Journal of Materials Science Pub Date : 2025-03-23 DOI: 10.1007/s10853-025-10773-1

C. Acuna-Porras, M. Roble, F. Gutiérrez-V, C. Chamorro, K. Cancino, M. Calderon, Gustavo M. Morales, D. E. Diaz-Droguett

{"title":"A comparative study of hydrogels based on GO-Cu composites for potential applications in water treatment","authors":"C. Acuna-Porras, M. Roble, F. Gutiérrez-V, C. Chamorro, K. Cancino, M. Calderon, Gustavo M. Morales, D. E. Diaz-Droguett","doi":"10.1007/s10853-025-10773-1","DOIUrl":"10.1007/s10853-025-10773-1","url":null,"abstract":"<div><p>In this study, hydrogels composed of self-assembled graphene oxide (GOH) sheets reinforced with copper particles (Cu-GOH) were synthesized via hydrothermal treatment of a graphene oxide (GO) solution. The metallic copper particles (CuP) were obtained by a green method using a plant extract as reducing agent (Spinacia oleracea). Scanning electron microscopy (SEM) characterization revealed a porous structure in both GOH and Cu-GOH, with effective integration of CuP into the Cu-GOH structure. Energy-dispersive X-ray spectroscopy (EDS) confirmed the presence of C, O, and Cu as primary elements, while X-ray diffraction (XRD) patterns indicated slight oxidation of CuP after the hydrothermal reaction (17 wt% of Cu<sub>2</sub>O), evidenced by weak Cu<sub>2</sub>O diffraction peaks. X-ray photoelectron spectroscopy (XPS) analysis indicated a mean chemical reduction in GOHs and Cu-GOHs compared to GO, resulting in alterations in the composition of oxygenated functional groups. Specifically, there were mean reductions in the C–OH/C–O (87%), C=O (68%), and COOH/COO– (72%) bonds. Ultraviolet–visible (UV–Vis) spectroscopy assessed the methylene blue (MB) adsorption capacity and performance of the GOH and Cu-GOH samples, while water loading/unloading cycles evaluated the hydrogels’ resistance. Cu-GOH composites demonstrated enhanced resistance to water loading/unloading cycles compared to GOH, enduring more cycles before structural disintegration. Regarding MB adsorption, Cu50 and Cu100-GOH samples reached a removal rate of 95% within the studied time range, whereas GOH only absorbed around 85% in the same time, highlighting the beneficial role of CuP inclusion in the GOH structure and achieved complete removal of MB from water (95%) within the studied time range, whereas GOH absorbed approximately 85% of MB, highlighting the beneficial role of CuP inclusion in the GOH structure.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 13","pages":"5815 - 5833"},"PeriodicalIF":3.5,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143784134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Biohybrid multifunctional Ag3PO4 loaded natural nano-hydroxyapatite from salmon bones for disposal of wastewater

IF 3.5 3区材料科学

Journal of Materials Science Pub Date : 2025-03-23 DOI: 10.1007/s10853-025-10787-9

Chuanxu Liu, Xiangyu Lan, Yuanzhu Wang, Wenjun Li, Juan Ding, Yang Pu

{"title":"Biohybrid multifunctional Ag3PO4 loaded natural nano-hydroxyapatite from salmon bones for disposal of wastewater","authors":"Chuanxu Liu, Xiangyu Lan, Yuanzhu Wang, Wenjun Li, Juan Ding, Yang Pu","doi":"10.1007/s10853-025-10787-9","DOIUrl":"10.1007/s10853-025-10787-9","url":null,"abstract":"<div><p>Even with the current advancement, the treatment of industrial and aquaculture wastewater containing organic and inorganic pollutants is still one of the research focuses, and the development of photocatalysts degrading those contaminants under visible light has been considered an essential strategy. In this study, we reported a novel multifunctional photocatalytic material (nHAP-Ag<sub>3</sub>PO<sub>4</sub>) composed of natural nano-hydroxyapatite (nHAP) from salmon processing by-products, fish bones, with an in-situ Ag<sub>3</sub>PO<sub>4</sub> loading, by a body-centered cubic structure. Under visible light irradiation, with organic dyes, tetracycline (TC) and Pb(II) as simulated water pollutants, it was found that nHAP-Ag<sub>3</sub>PO<sub>4</sub> had an excellent degradation rate for organic dyes and TC, reaching more significant than 95%, and stabilities towards them, for which the degradation rate remained higher than 83% after three cycles. Additionally, it exhibits efficient adsorption capability of heavy metal ions by adsorbing 180 mg/g for Pb(II) within 100 min, which is approximately three times that of pure nHAP. Furthermore, the nHAP-Ag<sub>3</sub>PO<sub>4</sub> composite also possesses high-efficiency polyphenol oxidase (PPO) mimicking activity, compared with natural laccase, nHAP-Ag<sub>3</sub>PO<sub>4</sub> possesses a similar substrate affinity and a higher reaction rate. This work provides a tremendous potential versatile material for future practical applications in the disposal of wastewater.</p><h3>Graphical abstract</h3><p>A novel nHAP-Ag<sub>3</sub>PO<sub>4</sub> nanoparticle was constructed to improve the stability and dispersion of Ag<sub>3</sub>PO<sub>4</sub>, contributing to the excellent photodegradation ability of organic pollutants, good heavy metal adsorption ability and high PPO-like activity.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 13","pages":"5834 - 5846"},"PeriodicalIF":3.5,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143784135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Unsupervised Graph-GAN model for stress–strain field prediction in a composite

IF 3.5 3区材料科学

Journal of Materials Science Pub Date : 2025-03-23 DOI: 10.1007/s10853-025-10772-2

Ratanlal Sahu, Antrakrate Gupta, Divyansh Mittal, Parthapratim Chatterjee, Shikhar Krishn Jha

{"title":"Unsupervised Graph-GAN model for stress–strain field prediction in a composite","authors":"Ratanlal Sahu, Antrakrate Gupta, Divyansh Mittal, Parthapratim Chatterjee, Shikhar Krishn Jha","doi":"10.1007/s10853-025-10772-2","DOIUrl":"10.1007/s10853-025-10772-2","url":null,"abstract":"<div><p>Out of an astronomical number of combinations in the materials design space, the quest for high-performance novel composites is pacing up. Composite designing needs predictive advanced tools and techniques to complement advanced manufacturing techniques and avoid costly experimental trials, complex modeling, and simulations. Current work focuses on developing an unsupervised material science-informed deep learning model architecture, Graph-GAN, for end-to-end prediction of deformation fields from the unseen composite designs accurately without any spatial data loss. The rate-independent J2 plasticity model for small deformations (5%) is modified for computing deformation fields in synthetically generated biphasic 2D microstructures in a python-based platform for ground-truth dataset generation. Graph-GAN performed impeccably well over typical traditional generative adversarial networks (image-to-image translations) with RMSE < 0.06 for prediction in the test dataset with regular circular geometries and RMSE < 0.07 for unseen microstructures with irregular and arbitrary geometries for the secondary phase. For the first time, this work presents the integration of graph convolutional networks (GCNs) into generative adversarial networks (GANs) for predictive materials science using machine learning. This approach paves the way for numerous opportunities for experts across various disciplines to explore similar methodologies.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 13","pages":"5795 - 5814"},"PeriodicalIF":3.5,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143784108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Synthesis and antifouling properties of carbazole amide derivatives with fluorescent functional structure

IF 3.5 3区材料科学

Journal of Materials Science Pub Date : 2025-03-22 DOI: 10.1007/s10853-025-10725-9

Yifan Wang, Wenjian Dong, Xuefeng Yan, Xia Li, Liangmin Yu

{"title":"Synthesis and antifouling properties of carbazole amide derivatives with fluorescent functional structure","authors":"Yifan Wang, Wenjian Dong, Xuefeng Yan, Xia Li, Liangmin Yu","doi":"10.1007/s10853-025-10725-9","DOIUrl":"10.1007/s10853-025-10725-9","url":null,"abstract":"<div><p>Tin-free self-polishing antifouling coatings are prevalent today. However, its high Cu<sub>2</sub>O content endangers the marine environment. Leveraging the fluorescent properties of coating to prevent fouling is an environmentally friendly antifouling coating development. In this paper, four unreported fluorescent structural carbazole amide derivatives (FSCAD) were synthesized by Friedel–Crafts alkylation reaction. Their fluorescence, antibacterial, and algal inhibition properties were examined. The fluorescent properties test results showed that the four FSCAD exhibited high fluorescence properties. The results of antibacterial test and anti-algae growth test showed that the maximum bacterial inhibition rate can reach 90%, and the growth inhibition rate of three kinds of microalgae can reach more than 75%. It was added to the antifouling coating system as an antifouling agent instead of the traditional antifouling agent Cu<sub>2</sub>O. The abrasion rate, contact angle, surface morphology, and roughness of the coatings were determined by dynamic simulation experiments, and the antifouling properties of the coatings were evaluated by the anti-algae sedimentation test and marine environment antifouling experiments. The results of dynamic simulation experiments showed that adding FSCAD does not affect the wettability and surface state of the coating. Anti-algae sedimentation test exhibited that marine antifouling coatings with FSCAD showed excellent inhibition on the sedimentation of microalgae. The anti-fouling performance of the coating was tested in the marine environment antifouling experiments. The results showed that the coating exhibited excellent anti-fouling performance, with minimal biofouling was attached to the surface of the coating. Especially, the antifouling performance with compound A was better than that of chlorothalonil.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 13","pages":"5749 - 5764"},"PeriodicalIF":3.5,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143784104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 review on the wear performance of additively manufactured 316L stainless steel: process, structure, and performance 快速成型 316L 不锈钢磨损性能综述：工艺、结构和性能

IF 3.5 3区材料科学

Journal of Materials Science Pub Date : 2025-03-22 DOI: 10.1007/s10853-025-10775-z

Ismat Ara, Dilpreet Bajwa, Amirmohammad Raeisi

{"title":"A review on the wear performance of additively manufactured 316L stainless steel: process, structure, and performance","authors":"Ismat Ara, Dilpreet Bajwa, Amirmohammad Raeisi","doi":"10.1007/s10853-025-10775-z","DOIUrl":"10.1007/s10853-025-10775-z","url":null,"abstract":"<div><p>Metal-based additive manufacturing (AM) has gained particular attention because of its potential for tailoring alloy systems. The flexibility in design and material properties makes the AM technology promising for individual customer-specific applications, such as biomedical implants. Due to its extensive range of applications, 316L austenitic stainless steel is one of the most common iron-based alloys. One of the challenges with 316L as a biomedical implant is to ensure resistance to damage by wear-assisted pitting and corrosion. There is limited research on the wear behavior of AM-processed 316L, whereas plenty of studies have been done on the tribological behavior of conventional 316L. This review aims to extensively explore the state of the art regarding the wear behavior of the AM-processed 316L at different processing and experimental conditions and correlate the wear behavior with its corresponding material properties. Additionally, potential post-processing treatments are discussed to improve the wear behavior of the alloy further. The accumulated knowledge from this review can be applicable to analyze the wear characteristics of AM 316L, paving the way for further improvement for its successful application as biomedical implants.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 13","pages":"5686 - 5720"},"PeriodicalIF":3.5,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143784103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Study on the wear resistance of 2024-T351 aluminum alloy strengthened by ultrasonic-assisted laser shock peening

IF 3.5 3区材料科学

Journal of Materials Science Pub Date : 2025-03-22 DOI: 10.1007/s10853-025-10786-w

Xiankai Meng, Zilong Cheng, Jianzhong Zhou, Fuyang Song, Xianhua Zhao, Wei Wu, Fei Gao, Jie Cai, Wei Xue, Yang Liu

{"title":"Study on the wear resistance of 2024-T351 aluminum alloy strengthened by ultrasonic-assisted laser shock peening","authors":"Xiankai Meng, Zilong Cheng, Jianzhong Zhou, Fuyang Song, Xianhua Zhao, Wei Wu, Fei Gao, Jie Cai, Wei Xue, Yang Liu","doi":"10.1007/s10853-025-10786-w","DOIUrl":"10.1007/s10853-025-10786-w","url":null,"abstract":"<div><p>The ultrasonic-assisted laser shock peening (ULP) technique, through the combined strengthening effects of laser shock peening and ultrasonic peening, can enhance the wear resistance and fatigue resistance of metal materials. This paper uses the 2024-T351 aluminum alloy as the subject for ULP enhancement experiments. Comprehensive tests including microstructure, phase structure, surface morphology, microhardness, residual stress, and wear resistance were conducted. Furthermore, coefficient of friction (COF), wear volume loss, and wear morphology were analyzed to reveal the improvements in wear resistance and the transformations in wear mechanisms induced by ULP treatment. Significant grain refinement and high-density dislocations are induced by ULP treatment, which results in pronounced work hardening effects, achieving a surface microhardness of 191.9 HV and a hardened layer depth of 850 µm. Compared to the untreated samples, the high-hardened surface induced by ULP reduces the possibility of material peeling from the surface, leading to a decrease in average COF and wear volume loss by up to 37.9% and 40.8%, respectively. Additionally, the ULP treatment effectively suppress adhesive wear, significantly improving the wear morphology and enhancing the wear resistance of the aluminum alloy.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 13","pages":"5954 - 5976"},"PeriodicalIF":3.5,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143784105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Calculations of elastic and thermal properties of the strengthening C14 Fe6Nb4Al2 Laves phase using the density functional theory

IF 3.5 3区材料科学

Journal of Materials Science Pub Date : 2025-03-21 DOI: 10.1007/s10853-025-10754-4

Dmitry Vasilyev, Renat S. Ikhsanov, Mark Zheleznyi, Alexey Kartsev

引用次数: 0

Effect of particle size on coalescence dynamics and deformation mechanism of the Cu during hot-pressed sintering

IF 3.5 3区材料科学

Journal of Materials Science Pub Date : 2025-03-21 DOI: 10.1007/s10853-025-10742-8

Xiaopan Wang, Pengya Lei, Qingwei Guo, Yongmei Zhang, Hua Hou, Yuhong Zhao

{"title":"Effect of particle size on coalescence dynamics and deformation mechanism of the Cu during hot-pressed sintering","authors":"Xiaopan Wang, Pengya Lei, Qingwei Guo, Yongmei Zhang, Hua Hou, Yuhong Zhao","doi":"10.1007/s10853-025-10742-8","DOIUrl":"10.1007/s10853-025-10742-8","url":null,"abstract":"<div><p>The existing studies focus on the hot sintering behavior of Cu particles at different temperatures and particle sizes, without considering the effect of pressure on sintering. In addition, the model used in the simulation lacks random distribution, so it is necessary to use a more accurate sintering model. In this work, based on the multi-particle model, the effect of particle size on Cu hot-pressed sintering properties was studied by molecular dynamics method combined with phase-field simulation. The results indicate that the twinning and dislocations formed during the hot-pressed sintering process can enhance the strength and plasticity of Cu. The phase-field results demonstrate the occurrence of particle coalescence during the sintering process, which is in agreement with the molecular dynamics simulation results. During the hot-pressed sintering process, an analysis of the diffusion rate reveals that when the particles are 3–4 nm, the thermal diffusion effect is stronger than pressure. The opposite phenomenon is observed for the particles at 5–8 nm. For particle size is less than 6 nm, grain boundary migration and grain rotation lead to plastic deformation. When the particle size is larger than or equal 6 nm, the plastic deformation is mainly caused by the slip of local and extended dislocations and the deformation twins in the grain.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"60 12","pages":"5535 - 5557"},"PeriodicalIF":3.5,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143726739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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