Advanced Engineering Materials最新文献

{"title":"Additive Manufacturing of GNP-Enriched Copper Feedstock via Bound Metal Deposition","authors":"Matteo Mariani,&nbsp;Maria Elisa Tata,&nbsp;Girolamo Costanza,&nbsp;Francesca Nanni,&nbsp;Elisa Pizzi,&nbsp;Mario Bragaglia","doi":"10.1002/adem.202502758","DOIUrl":"https://doi.org/10.1002/adem.202502758","url":null,"abstract":"<p>In this work, a copper–graphene nanoplatelet (Cu–GNP) feedstock was developed and processed via bound metal deposition (BMD) to produce dense copper metallic parts. Rheological analyses showed that the addition of GNPs reduced the melt viscosity across the 160°C–250°C range, ensuring stable extrusion and smooth layer deposition. After solvent and thermal debinding, sintering was performed at 1050°C. The sintered samples exhibited a 92% densification relative to bulk copper, and a linear shrinkage of ∼17%–18% along all directions. The microstructure showed equiaxed grains with an average size of 23 ± 5 µm. Mechanical tests revealed an elastic modulus of 100 ± 2 GPa, yield strength of 24.6 ± 1.8 MPa, ultimate tensile strength of 62.4 ± 0.8 MPa, elongation at break of 10.8 ± 1.6%, and Vickers hardness of 22.3 HV. The electrical conductivity is 42.5 × 10⁶ S/m, leading to a thermal conductivity of 311.5 W/m K (from the Wiedemann–Franz law). A proof-of-concept 3D printed cooling fin is also presented.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"28 16","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148785230","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}

{"title":"Research on the Heat Dissipation Performance of Functionally Graded Aluminum Foam Fabricated via Powder Metallurgy Integrated Forming","authors":"Yong Li,&nbsp;Xinpei Xu,&nbsp;Zan Zhang,&nbsp;Guanjie Zhao,&nbsp;Jian Ding,&nbsp;Minglei Shi,&nbsp;Qianqian Liu,&nbsp;Wenkai Liu,&nbsp;Yali Ma,&nbsp;Bingya Li,&nbsp;Xingchuan Xia","doi":"10.1002/adem.71029","DOIUrl":"https://doi.org/10.1002/adem.71029","url":null,"abstract":"<p>Open-cell aluminum foam is widely used in heat dissipation components due to its large heat transfer surface area, high thermal conductivity, and strong fluid mixing capability. The graded structure has been demonstrated to effectively balance the trade-off between the heat transfer coefficient and pressure drop in open-cell aluminum foam. In this study, functionally graded aluminum foam samples with varying porosity were successfully fabricated via powder metallurgy using an integrated forming process. Their convective heat transfer coefficients, pressure drops, and overall heat transfer performance were systematically investigated under different flow velocities and compared with those of uniform aluminum foam. Simultaneously, combined with numerical simulation, the internal heat transfer mechanism was studied in depth. The results indicate that the porosity gradient significantly influences the heat transfer performance of aluminum foam. Under the current experimental conditions, when the porosity gradient is 80%–75%–70%, the gradient aluminum foam achieves the highest convective heat transfer coefficient of 832 W·m⁻²·K⁻¹, with a corresponding pressure drop of 3605 Pa/m. An overall evaluation factor is adopted to assess the heat transfer performance; the overall evaluation factor reaches its maximum at a flow velocity of 1 m/s, which is 5.85 times higher than that of uniform aluminum foam with the same average porosity. This is because, compared to the uniform structure, the gradient structure optimizes the fluid flow path, reduces the energy required for the fluid to overcome the resistance of the solid skeleton, exhibits higher permeability and a lower friction factor, and effectively reduces pump power loss. At the same time, the gradient structure enhances internal fluid disturbance, increasing the amount of heat transferred per unit time. The synergistic effect of these two factors enables the gradient aluminum foam to achieve superior overall heat transfer performance compared to uniform aluminum foam. Furthermore, due to the axially increasing fluid velocity and higher inlet kinetic energy, the negative gradient aluminum foam achieves a higher overall flow velocity and greater capability to overcome frictional resistance, thereby exhibiting better overall heat transfer performance than its positive gradient counterpart.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"28 16","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148783573","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}

{"title":"Defect Evolution and Mechanical Performance of Fused Filament Fabrication-Manufactured 17-4PH Stainless Steel Revealed by X-Ray Computed Tomography","authors":"György Ledniczky,&nbsp;Márk Sárközi,&nbsp;Ibolya Zsoldos,&nbsp;Zoltán Weltsch","doi":"10.1002/adem.71034","DOIUrl":"https://doi.org/10.1002/adem.71034","url":null,"abstract":"<p>Extrusion-based metal additive manufacturing using Fused Filament Fabrication (FFF) offers a cost-effective route for producing complex metal components; however, internal defects formed during processing strongly influence the final mechanical performance. This study investigates the relationship between process-induced porosity, internal defect evolution, and tensile behavior in FFF-manufactured 17-4PH stainless steel specimens using X-ray computed tomography (CT) combined with mechanical testing. CT analysis enables nondestructive, three-dimensional characterization of porosity distribution in both green and sintered states. The results show that sintering leads to significant shrinkage and porosity reduction, while defects originating from the green parts strongly affect the structural quality of the final components. Specimens produced with optimized printing parameters exhibit more homogeneous internal structures and higher tensile strength. CT-based structural simulations accurately identify the weakest cross-sections of the specimens, with predicted fracture locations showing close agreement with experimental results. An empirical relationship between residual porosity and tensile strength is established, confirming a monotonic decrease in strength with increasing porosity. The presented approach demonstrates that CT-based evaluation provides an effective tool for linking process parameters, internal structure, and mechanical performance, supporting process optimization and quality assurance in extrusion-based metal additive manufacturing.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"28 16","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adem.71034","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148784079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Achieving Both Conformability and Load Distribution with Granular Jamming Beams","authors":"Mustafa Özkaya,&nbsp;Zihang Zhao,&nbsp;Alan T. Asbeck","doi":"10.1002/adem.202501705","DOIUrl":"https://doi.org/10.1002/adem.202501705","url":null,"abstract":"<p>Typically, soft structures are needed to conform to curved or irregular surfaces, but they are not very good at transferring adhesive loads from a single attachment point to their entire area on account of their low stiffness. Conversely, stiff structures achieve excellent load distribution over large areas but cannot be used on surfaces with a different curvature. In this paper, we present granular jamming as a new solution to the problem of conforming to curved or irregular surfaces and then stiffening to distribute adhesive forces over the entire contact area. We demonstrate this with a granular jamming beam equipped with five suction cups along its length. We show that this structure can not only conform to a flat object and two curved objects but also can support loads of 84.7% of a rigid beam. We also propose that the Flexural Compliance is a measure of how readily a structure can conform to surfaces with different radii and support adhesive forces across its body. We simulate the maximum loads that can be supported by a beam with different values for the Flexural Compliance and experimentally verify this for a number of different beams with different values of Flexural Compliance.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"28 16","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148784093","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}

{"title":"Design and Analysis of Compression–Torsion Coupling Metamaterials Using the Golden Section Method","authors":"Amirhossein Hassani,&nbsp;Sara Bagherifard","doi":"10.1002/adem.71037","DOIUrl":"https://doi.org/10.1002/adem.71037","url":null,"abstract":"<p>Compression–torsion (CT) coupling in mechanical metamaterials has a high potential to be used for energy harvesting, sensors, and actuators. In current study, a novel CT metamaterial with cubic structure and oblique elements was designed and parametrically analyzed using finite element method. The golden section method was applied to identify the optimal structural features for torsional properties. The impact of varying the number of cells along longitudinal and transversal directions on torsional and mechanical properties of tessellated structures was examined. Experimental compression tests on samples fabricated by digital light processing (DLP) confirmed the validity of the simulations. Comparison of the optimized cubic structure with other similar structures in the literature highlighted its potential for adaptation to various applications through parametric study and multifunctionality properties. Finally, the tubular configuration of the developed CT unit cells was also parametrically studied.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"28 16","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adem.71037","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148785232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Light-Assisted 3D Printing Techniques and Photocrosslinking Strategies: Recent Advances in Musculoskeletal Tissue Engineering","authors":"Meagan Morgan,&nbsp;Bin Zhang,&nbsp;Roger Narayan","doi":"10.1002/adem.202502238","DOIUrl":"https://doi.org/10.1002/adem.202502238","url":null,"abstract":"<p>Musculoskeletal (MSK) disorders represent a significant global health challenge that affects over 1.7 billion people, leading to physical disability as well as reduced mental health and socioeconomic well-being. Despite their high prevalence, MSK diseases remain severely underfunded compared to other global health priorities. Tissue engineering and regenerative medicine (TERM) can utilize light-based 3D bioprinting and photocrosslinking methods for the treatment and study of MSK conditions. Light-based bioprinting techniques, such as digital light processing and stereolithography, enable the creation of high-resolution scaffolds that mimic the complex, highly organized structure of MSK tissues, while photocrosslinking methods can be applied more broadly across nonlight-based techniques to improve ink or scaffold stability. These technologies hold the potential for advancing MSK therapies; however, the need for specialized photocurable materials, cytotoxicity concerns, and mechanical limitations of printed constructs remains. This systematic review addresses current gaps and trends in light-assisted 3D printing for MSK applications, examines the most frequently used biomaterials and cell types over the past 5 years, and highlights future research directions to advance TERM for MSK repair and regeneration.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"28 16","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adem.202502238","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148785143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Materials and Device Architectures for Multifunctional Sensing in Harsh Environments: A Review","authors":"Sudhanshu Singh,&nbsp;Zunjarrao Kamble,&nbsp;Ranjna Kumari,&nbsp;Ghanshyam Neje","doi":"10.1002/adem.71035","DOIUrl":"https://doi.org/10.1002/adem.71035","url":null,"abstract":"<p>Extreme environments, such as gas turbines, nuclear systems, and deep-sea platforms, require sensors that can operate reliably under combined thermal, mechanical, and radiation stresses. This review provides a comprehensive and quantitatively supported synthesis of cutting-edge sensor technologies (2018–2025) designed for extreme environments. It investigates materials, device architectures, and system-integration strategies that facilitate operation under conditions such as high temperatures, pressures, radiation, corrosive media, hydrostatic loads, cryogenic conditions, and wireless power/data limitations. This review takes a holistic approach by integrating materials, device architectures, packaging, communication, and edge intelligence, rather than summarizing individual sensor types in isolation. It emphasizes a system-level perspective that includes quantitative performance targets and manufacturability considerations. The synthesis of studies reveals unresolved integration bottlenecks and delineates immediate research directions to develop autonomous, field-deployable, multifunctional sensor networks. A comprehensive comparison framework is presented, utilizing consistent performance descriptors, including temperature capability, sensitivity, radiation tolerance, wireless readout distance, and hermetic stability. In addition to device physics, the paper examines diverse packaging strategies, hybrid mechanisms for wireless power transfer and data transfer, and integrated data-driven calibration methods utilizing statistical and machine-learning models. Future directions suggest incorporating quantum sensing, neuromorphic computing, reconfigurable surfaces, and bio-integrated platforms to develop autonomous, adaptive sensor networks.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"28 16","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148785151","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}

{"title":"Extrusion-Based Additive Manufacturing of Advanced Ceramics: Strengthening Mechanisms and Process Optimization Review","authors":"Meisam Bakhtiari,&nbsp;Mohammad Hadi Sheikh-Ansari,&nbsp;Avinash Borgaonkar,&nbsp;Mehran Dadkhah,&nbsp;Abdollah Saboori","doi":"10.1002/adem.71088","DOIUrl":"https://doi.org/10.1002/adem.71088","url":null,"abstract":"<p>Extrusion-based additive manufacturing (EAM) has become an increasingly important method for fabricating complex ceramic components due to its cost-effectiveness, design flexibility, and suitability for small-batch production. This review presents a comprehensive evaluation of EAM processes for advanced ceramics, including water-based and thermoplastic extrusion methods such as fused deposition modeling, extrusion free-form fabrication, thermoplastic 3D printing, and photoassisted extrusion techniques. This study critically examines how key process parameters, including extrusion pressure, velocity, nozzle diameter, and layer thickness, affect surface finish, dimensional accuracy, and defect formation. The occurrence of porosity and cracking in both single- and multistage processes highlights the necessity of advanced postprocessing techniques. Methods such as debinding, sintering, infiltration, and isostatic pressing are evaluated for their effectiveness in improving densification and microstructural integrity. Preprocessing routes including liquid silicon infiltration and spark plasma sintering are also explored. Additionally, the review addresses optimization strategies through toolpath planning, machine learning, and process simulation. Applications in biomedical scaffolds, aerospace components, and functional electronics are discussed to demonstrate the industrial potential of EAM. By synthesizing recent developments in materials, process control, and performance assessment, this work identifies major challenges and opportunities in ceramic additive manufacturing and offers guidance for future research and industrial applications.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"28 16","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adem.71088","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148783625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evolutions of the Microstructure and Mechanical Properties of Al2O3/YAG DSEC During High-Temperature Heat Treatment","authors":"Jinwei Wei,&nbsp;Zeye Chen,&nbsp;Xue Cao,&nbsp;Ming Li,&nbsp;Weiwei Cao,&nbsp;Jianqiang Meng,&nbsp;Juncheng Liu","doi":"10.1002/adem.71031","DOIUrl":"https://doi.org/10.1002/adem.71031","url":null,"abstract":"<p>Directionally solidified eutectic ceramic (DSEC) Al₂O₃/YAG is fabricated with the high frequency induction heated vertical Bridgman method. The evolutions of the microstructure and the mechanical properties are investigated during a long term heat treatment at 1500°C for 100–300 h for the DSEC samples grown at different growth rates (10–30 mm/h). The results show that the eutectic maintains the two-phase Al₂O₃ and YAG microstructure after the heat treatment. The eutectic spacing increases significantly with the heat treatment time for all the DSECs, and the higher the growth rate at which the sample is grown, the more pronounced the microstructure coarsening. The eutectic spacing of DSEC Al₂O₃/YAG grown at 30 mm/h HAY(30) increases by 33.4%, much higher than 7.55% by which HAY(10) grown at 10 mm/h. The hardness and fracture toughness of HAY(10) decrease by only 3.6% and 12.7%, respectively, whereas those of HAY(30) decrease by 9.05% and 21.5%, respectively. The samples grown at lower rates exhibit a better thermal stability. Furthermore, the coarsening-kinetics analysis indicates that the coarsening of Al₂O₃/YAG DSEC follows a diffusion-controlled Ostwald ripening mechanism, governed primarily by the interfacial diffusion at the early stage, transitioning to the volume diffusion at the later stage.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"28 16","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148783679","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}

{"title":"Preparation and Properties of High Thermal Conductivity Carbon Fiber Composites Based on Flow Shear/Calendering Coupling Orientation Method","authors":"Wenbin Dou,&nbsp;Yuqian Tu,&nbsp;Bin Liu,&nbsp;Hongjie Luo,&nbsp;Xinzhan Zhou,&nbsp;Lin Chen,&nbsp;Xiao Jia","doi":"10.1002/adem.71038","DOIUrl":"https://doi.org/10.1002/adem.71038","url":null,"abstract":"<p>Carbon-fiber (CF)-oriented thermal interface materials (TIMs) can effectively improve interfacial heat conduction in high-power-density chips, but existing orientation methods usually show low efficiency and difficulty in balancing high thermal conductivity (κ) with mechanical adaptability. Here, a flow shear/calendering coupling secondary orientation method was proposed using polydimethylsiloxane (PDMS) as the matrix, pitch-based CFs as the main filler, and multisized spherical alumina (Al₂O₃) as auxiliary fillers. Al₂O₃ particles were used to bridge adjacent CFs and fill polymer-rich gaps, while flow shear and calendering enabled more than 80% of CFs to orient vertically. With a 10 μm:2 μm Al₂O₃ mass ratio of 6:4 and 13 wt% CFs, the through-plane κ measured by the heat flow method reached 25.6 W/(m·K), 29.3% higher than the primary-oriented sample and 666.5% higher than the randomly oriented sample. The optimized TIM also showed good flexibility and compressibility, with a compression ratio of 16.9% under 20 psi. In light-emitting diode heat-dissipation tests, the oriented CFs pad stabilized the chip temperature at 56.8°C, outperforming randomly oriented and commercial pads. This work provides a practical route for developing high-performance TIMs.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"28 16","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148785148","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}