Advanced Engineering Materials最新文献

{"title":"Effect of Prerecovery Annealing on Microstructure and Mechanical Properties of AA8021 Aluminum Alloy used for Aluminum Plastic Films","authors":"Yuanchun Huang,&nbsp;Yuhui Wang,&nbsp;Jianye Zhao,&nbsp;Yu Liu,&nbsp;Changke Chen,&nbsp;Guozhong He","doi":"10.1002/adem.202500195","DOIUrl":"10.1002/adem.202500195","url":null,"abstract":"<p>In the present work, the effect of prerecovery annealing on microstructural evolution and mechanical properties of AA8021 aluminum alloy is reported. It is found that the grain refinement for sample recovery annealing at 150 °C is limited, and prolonged holding time deteriorates its microstructural uniformity, leading to a decrease in mechanical properties. Also, compared to annealing at 420 °C × 3 h after direct rolling to 0.5 mm, prerecovery annealing at 150 °C and 280 °C with a thickness of 1 mm can moderately refine the grain size and significantly improve the elongation, respectively, which is found closely related to the recrystallization behaviors. It is determined that the AA8021 alloy reaches a nearly complete recrystallization state after 6 h high-temperature recovery at 280 °C, which is found primarily through continuous recrystallization involving subgrain rotation and subgrain boundary coalescence. Further, the enhanced elongation presented in the plate annealed at 280 °C × 6 h (1 mm) + 420 °C × 3 h (0.5 mm) is proved to be mainly attributed to the reduction in grain size and increased recrystallization.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"27 16","pages":""},"PeriodicalIF":3.3,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144894034","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":"Enhancing Chemical Stability of Pt Ultrathin Films on Substrates by Controlled Intermixing of Pt-Zn at Interface","authors":"Lasya Peela,&nbsp;Daljin Jacob,&nbsp;Vinod Sarky,&nbsp;Ashok Allamula,&nbsp;Sirish Pandiri,&nbsp;Parasuraman Swaminathan,&nbsp;Satyesh Kumar Yadav","doi":"10.1002/adem.202500322","DOIUrl":"10.1002/adem.202500322","url":null,"abstract":"<p>Platinum (Pt) ultrathin films supported on substrates can enable reduced metal loading, but their long-term stability in harsh environments remains a challenge. This work establishes that an optimal thickness of the intermediate adhesion layer can provide this stability. Pt ultrathin films (20 nm) are deposited on Silicon substrates using a Zinc (Zn:4, 6 nm) adhesion layer in a DC magnetron sputtering system. Results show that the addition of the Zn layer nearly doubled the adhesion strength of Pt films, from 420 to 780 μN. A maximum of 4 nm Zn leads to longevity of Pt films in 1 <span>m </span>H₂SO₄ environments with negligible variation in sheet resistance (15–20 Ω sq⁻¹) for over 4 months. Films with 6 nm Zn deteriorated within 2 weeks. Observed adhesion and stability are due to limited (for 4 nm) and complete intermixing (for 6 nm) of Zn and Pt, resulting in the formation of Pt-Zn solid solution. Solid solution formation is validated by X-ray photoemission spectroscopy, X-ray diffraction, and density functional theory. This study opens up the possibility of using engineered adhesion layers to enhance the durability of ultrathin metal films for a wide range of industrial applications.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"27 15","pages":""},"PeriodicalIF":3.3,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144782341","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":"Special Section on “Materials Technologies for Controlling Liquid–Surface Interactions from Wetting to Icing”","authors":"Anna Maria Coclite,&nbsp;Ana Borras","doi":"10.1002/adem.202501428","DOIUrl":"10.1002/adem.202501428","url":null,"abstract":"&lt;p&gt;The control of liquid–surface interactions is a fundamental principle in materials science and engineering, influencing a vast array of applications, from energy systems, where tailored wettability enhances heat transfer and fluid dynamics, to biomaterials, where surface properties dictate cell adhesion, biofouling prevention, and drug delivery, liquid–surface interactions remain pivotal. Their role extends further into microfluidics, enabling precise manipulation of droplets in lab-on-a-chip devices and into stimuli-responsive materials, where controlled wetting behavior dictates adaptive and functional performance.&lt;/p&gt;&lt;p&gt;A cornerstone in our understanding of wetting behavior was Young's equation (1805), which established the balance of interface forces at the three-phase contact line, defining the equilibrium contact angle of a liquid droplet on a solid substrate. Followed by the pioneering studies by Wenzel (1936) and Cassie–Baxter (1944), which further refined this knowledge by introducing wetting models that explain how surface roughness and chemistry influence liquid behavior. The Wenzel model describes liquid infiltration into textured surfaces, leading to strong adhesion, while the Cassie–Baxter model highlights the formation of air pockets on structured surfaces, resulting in extreme water repellency. These principles laid the groundwork for modern surface engineering, guiding the development of superhydrophobic coatings, icephobic materials, and adaptive wetting surfaces. Building upon these fundamentals and drawing inspiration from nature, including the hierarchical microstructures of lotus leaves, the rose petal effect, and hydrophobic adaptations in animal fur and insect legs, scientists have engineered precise wettability control to create surfaces with remarkable water management properties. These innovations have unlocked new functionalities, including self-cleaning coatings, enhanced water repellency, and responsive wetting control, with materials ranging from superhydrophobic and oleophobic surfaces to slippery liquid-infused porous films (SLIPS) and amphiphilic coatings.&lt;/p&gt;&lt;p&gt;The control of liquid–surface interactions has been critical in the design of icephobic surfaces, where the behavior of water droplets before freezing determines ice nucleation, adhesion, and removal mechanisms. Ice accretion presents a severe challenge, affecting not only daily life but also critical industrial applications. Frozen power lines, traffic signals, and transportation systems suffer from efficiency losses and increased maintenance demands, while wind turbines, solar panels, and aeronautical surfaces face performance degradation and safety risks.&lt;/p&gt;&lt;p&gt;Developing next-generation icephobic solutions requires interdisciplinary advancements in surface engineering, ice adhesion reduction, and mechanical durability, ensuring optimal performance under extreme environmental conditions. Thus, research efforts are expanding across three major domain","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"27 13","pages":""},"PeriodicalIF":3.3,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adem.202501428","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144582177","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":"Scalable Fabrication of Height-Variable Microstructures with a Revised Wetting Model","authors":"Prabuddha De Saram,&nbsp;Nam-Trung Nguyen,&nbsp;Navid Kashaninejad","doi":"10.1002/adem.202570045","DOIUrl":"10.1002/adem.202570045","url":null,"abstract":"<p><b>Height-Variable Microstructures</b>\u0000 </p><p>In article number 2500234, Nam-Trung Nguyen, Navid Kashaninejad, and Prabuddha De Saram reveal that CO₂ laser-machined PMMA molds enable scalable fabrication of height-variable microstructures in PDMS. The image illustrates the fabrication process and anisotropic wetting behavior on sharkskin-inspired surfaces, enhanced by a revised wetting model.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"27 13","pages":""},"PeriodicalIF":3.3,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adem.202570045","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144582193","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":"Additive Manufacturing of Highly Alloyed Aluminum–Lithium","authors":"Lisa Matthäus,&nbsp;Hagen Peter Kohl,&nbsp;Dongmei Liu,&nbsp;Stephanie Lippmann,&nbsp;Stefan Nolte","doi":"10.1002/adem.202500262","DOIUrl":"10.1002/adem.202500262","url":null,"abstract":"<p>Aluminum–lithium alloys offer significant potential for lightweight construction, exhibiting decreased density and improved specific stiffness as the lithium content increases. The specific stiffness of these alloys improves with lithium concentrations up to 14 at%, outperforming that of pure aluminum. However, traditional casting methods, constrained by low cooling rates, result in the precipitation of brittle AlLi phases at grain boundaries when the lithium content exceeds 9 at%, limiting further enhancements in stiffness. In this work, it presents laser-assisted additive manufacturing of binary Al–Li alloy powder with an increased lithium content of 14 at%. Unlike standard methods, this study utilizes an ultrashort pulse laser with a pulse duration of 250 fs at a wavelength of 1030 nm for the powder bed fusion process. With an average power of 150 W and a repetition rate of 32.5 MHz, it successfully demonstrates the production of highly dense Al-Li alloy specimens. Ex situ laser-induced breakdown spectroscopy is conducted to verify the high lithium content of the additively manufactured samples. Mechanical properties are assessed by measuring the elastic modulus and hardness. In addition, computer tomography, electron microscopy, and X-ray diffraction techniques are utilized for quantitative porosity analysis and to characterize microstructure and constituent phases.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"27 14","pages":""},"PeriodicalIF":3.3,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adem.202500262","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144680990","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":"Microstructure Evolution and Properties of a Novel Intermetallics Precipitation-Hardened Steel Coating Reinforced by WC via Laser Cladding","authors":"Fengwei Xie,&nbsp;Ziren Yuan,&nbsp;Shuaipeng Chen,&nbsp;Luli Feng,&nbsp;Yuehui He,&nbsp;Xiyue Kang","doi":"10.1002/adem.202500076","DOIUrl":"10.1002/adem.202500076","url":null,"abstract":"<p>Protecting materials from wear, especially at high temperatures, is crucial across numerous industries. This study develops a novel intermetallics precipitation-hardened Fe–Co–Mo steel composite coating reinforced with WC, in situ intermetallics, and M₆C carbides, designed to achieve superior wear resistance across a wide temperature range. The microstructure evolution, strengthening mechanisms, and dry sliding wear behavior of coatings with varying WC content (0, 10, 20, and 30 wt%) are investigated. Coatings consist of α-Fe, WC particles, and reticular μ and M₆C phases, strengthened by solid solution, second-phase, and grain refinement. Analysis reveals age-hardening behavior, with WC addition influencing the relative content of μ and M₆C phases, affecting peak aging temperature and microhardness. The 10 wt% WC coating exhibits the highest peak microhardness (980 HV_0.2) and an optimal combination of hardness, temper resistance, and wear resistance at both room and elevated temperature, attributed to the balanced formation of μ phases, Laves phases, and M₆C. Higher WC contents lead to excessive coarse M₆C carbide formation, degrading properties. Room-temperature wear resistance improves with increasing WC content, while high-temperature wear resistance initially increases and then decreases, mirroring the trends in peak microhardness and temper resistance.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"27 15","pages":""},"PeriodicalIF":3.3,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144782554","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":"Mechanically Tunable Honeycomb-Structured Metamaterial for Multispectral Compatible Camouflage","authors":"Haojian Wang,&nbsp;Jiali Sun,&nbsp;Yulong Gao,&nbsp;Zhuoyang Wang,&nbsp;Zeng Qu,&nbsp;Junping Duan","doi":"10.1002/adem.202500893","DOIUrl":"https://doi.org/10.1002/adem.202500893","url":null,"abstract":"<p>Traditional metamaterial absorbers are limited by their static structures, making it challenging to dynamically and flexibly tune the absorption frequency of electromagnetic waves. To address this limitation, this article innovatively proposes a multifunctional and reconfigurable mechanically tunable honeycomb-structured metamaterial for multispectral compatible camouflage (MTHS-MC). It consists of three main structural layers: the mechanical structure layer (MSL) the infrared stealth layer (IRSS), and the color-changing layer (CCL). Its unique honeycomb-like mechanical structure enables flexible tuning of the absorption band through compressive geometric configuration. This design achieves controllable deformation of the honeycomb structure (with a deformation value reaching 32<span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <msqrt>\u0000 <mn>3</mn>\u0000 </msqrt>\u0000 </mrow>\u0000 <annotation>$sqrt{3}$</annotation>\u0000 </semantics></math>/15 mm). This reconfiguration mechanism differs fundamentally from traditional geometric optimization approaches, allowing real-time switching between dual absorption peaks at 7.66 GHz and 16.51 GHz. Simultaneously, the CCL adjusts its color in response to temperature variations, achieving visible-light camouflage. Experimental results show that this metamaterial can switch between two absorption peaks within the 0–20 GHz range, and achieve broadband absorption within the 30–100 GHz range. Additionally, it demonstrates an infrared emissivity of 0.292 in the 3–14 μm wavelength band. This design enables dynamic switching between different absorption bands, making it highly efficient for practical applications in complex environments.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"27 18","pages":""},"PeriodicalIF":3.3,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145128975","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":"Numerical and Experimental Study of PLA Honeycomb-Shaped Lattice Fabricated by Fused Deposition Modeling","authors":"Alexandra Morvayová,&nbsp;Mojtaba Karamimoghadam,&nbsp;Luca Scolamacchia,&nbsp;Mahmoud Moradi,&nbsp;Giuseppe Casalino","doi":"10.1002/adem.202500430","DOIUrl":"10.1002/adem.202500430","url":null,"abstract":"<p>The capabilities of fused deposition modeling (FDM) allow manufacturing of specific functional structures containing lattice, holding the potential to create light-weight parts with improved mechanical performance. However, the process induces excessive cumulation of residual stresses, and eventual defects and distortions might represent an obstacle for their successful applications. This study aims to enhance the applicability and overall quality of FDM-manufactured parts with dense–lattice–dense structure by examining the relationships between key processing parameters, specifically layer thickness and extrusion temperature, and the resulting distortions, residual stresses, and tensile properties. The approach uses in the present investigation combined experiments, numerical modeling and statistical analysis to provide an overview on the process parameters and printed material interaction. Results reveal that precise dimensional control is generally achieved at lower extrusion temperatures, with minimal dependence on layer thickness. Furthermore, the incorporation of honeycomb lattice structures significantly increases ductility, up to nearly 600%, while reducing tensile strength by ≈50%. The level of sensitivity of mechanical properties on imposed processing conditions offers the flexibility of tailoring them according to the application's requirements. Eventually, the increased ductility offers potential benefits for large number of applications, including orthotics, impact-resistant components, soft robotics, and snap-fit assemblies.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"27 15","pages":""},"PeriodicalIF":3.3,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144782556","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":"Dynamic Mechanical Properties and Constitutive Model of SiC/Al Considering High Strain Rate and High/Low Temperatures","authors":"Shaokun Luo,&nbsp;Gang Jin,&nbsp;Hua Li,&nbsp;Zhanjie Li,&nbsp;Zhiqiang Wang,&nbsp;Xiaofan Deng,&nbsp;Yipu Bian","doi":"10.1002/adem.202500962","DOIUrl":"https://doi.org/10.1002/adem.202500962","url":null,"abstract":"<p>Silicon carbide (SiC)/aluminum (Al) composites have become the preferred material for packaging of electronic components due to their superior mechanical and physical properties. In this study, the dynamic response of SiC/Al is investigated at different temperatures and different strain rates. Dynamic compression experiments are conducted on composite material using a Split Hopkinson pressure bar (SHPB) apparatus over a temperature range from −80 to 600 °C and at strain rates from 1000 to 7000 s⁻¹. The mechanical properties of the material are studied, and the detailed microstructure of the compression test is analyzed in the experiment. Based on the results of dynamic and quasistatic compression experiments, the temperature softening coefficient and strain rate hardening parameter of the Johnson–Cook constitutive model are fitted, and the Johnson–Cook constitutive model of SiC/Al under high and low temperatures and high strain rate was established. The results indicate that the flow of stress and brittleness increase at low temperatures, whereas in high-temperature environments, plasticity is enhanced, and the yield stress is reduced. Compared to the traditional Johnson–Cook constitutive model, the modified model proposed in this study significantly improves prediction accuracy of experimental results, with values of <i>E</i>_RMSE and <i>E</i>_MAPE decreasing by 80.28% and 84.43%, respectively.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"27 18","pages":""},"PeriodicalIF":3.3,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145128981","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 Uncertainty Optimization of Pneumatic Helmholtz Resonance-Type Soft Acoustic Metamaterials","authors":"Kun Zhang,&nbsp;Zihan Zhang,&nbsp;Can Xiao,&nbsp;Cheng Yi,&nbsp;Jian Liu,&nbsp;Ning Chen","doi":"10.1002/adem.202500899","DOIUrl":"https://doi.org/10.1002/adem.202500899","url":null,"abstract":"<p>Traditional acoustic metamaterials (AMMs) typically have fixed structures, making it difficult to conveniently control their bandgaps. In this article, a pneumatic Helmholtz resonance-type soft acoustic metamaterial (<i>P</i>-HRSAMM) made of soft silicone rubber material is designed. The bandgap characteristics of the <i>P</i>-HRSAMM under the influence of local resonance mechanisms and Bragg scattering mechanisms through finite element calculations are analyzed. By combining these two bandgap mechanisms, new bandgaps can be obtained, and by applying different air pressures, the structure of the bandgaps can be controlled. Additionally, a surrogate model is used to analyze the effects of uncertainties in material, geometric, and pressure parameters on the band structure of the <i>P</i>-HRSAMM. Based on the trained surrogate model and genetic algorithm, the uncertainty optimal design of <i>P</i>-HRSAMM for maximizing bandgap width is performed. The results show that the <i>P</i>-HRSAMM made with soft silicone rubber can achieve bandgap tuning through pressure adjustment. After uncertainty optimization design, the total bandwidth of <i>P</i>-HRSAMM can reach 934.24 Hz.</p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":"27 18","pages":""},"PeriodicalIF":3.3,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145128976","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}