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Development of Interpenetrating Phase Structure AZ91/Al_(2)O_(3)Composites with High Stiffness,Superior Strength and Low Thermal Expansion Coefficient

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Acta Metallurgica Sinica(English Letters) 2025年第2期38卷 245-258页

作者： Zhiqing Chen Zhixian Zhao Yiqiang Hao Xiaoling Chen Liping Zhou Jingya Wang Tao Ying Bin Chen Xiaoqin Zeng National Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composite Shanghai Jiao Tong UniversityShanghai 200240China School of Materials Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Department of Mechanical Engineering the University of Hong KongPok Fu Lam RoadHong KongChina

Mg alloys have the defects of low stiffness,low strength,and high coefficient of thermal expansion(CTE).The composites strategy and its architecture design are effective approaches to improve the comprehensive performance of materials,but the processing difficulty,especially in ceramics forming,limits the control and innovation of material ***,combined with 3D printing and squeeze infiltration technology,two precisely controllable architectures of AZ91/Al_(2)O_(3)interpenetrating phase composites(IPC)with ceramic scaffold were *** interface,properties and impact of different architecture on IPC performance were studied by experiments and finite element *** metallurgical bonding of the interface was realized with the formation of MgAl_(2)O_(4)reaction *** IPC with 1 mm circular hole scaffold(1C-IPC)exhibited significantly improved elastic modulus of 164 GPa,high compressive strength of 680 MPa,and good CTE of 12.91×10^(-6)K^(−1),which were 3.64 times,1.98 times and 55%of the Mg matrix,*** elastic modulus,compressive strength,and CTE were superior to the vast majority of Mg alloys and Mg based *** reinforcement and matrix were bicontinuous and interpenetrating each other,which played a critical role in ensuring the potent strengthening effect of the Al_(2)O_(3)reinforcement by efficient load *** the same volume fraction of reinforcements,compared to IPC with 1 mm hexagonal hole scaffold(1H-IPC),the elastic modulus and compressive strength of 1C-IPC increased by 15%and 28%,respectively,which was due to the reduced stress concentration and more uniform stress distribution of *** shows great potential of architecture design in improving the performance of *** study provides architectural design strategy and feasible preparation method for the development of high performance materials.

关键词： Interpenetrating phase composites Al_(2)O_(3)/Mg composites Interface Elastic modulus Compressive strength Coefficient of thermal expansion(CTE)

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A Facile and Versatile Process for Creating Bioinspired Ceramic–Metal Hierarchical Structures

A Facile and Versatile Process for Creating Bioinspired Cera...

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Symposium on Advances in Ceramic materials and Processing, 2025, was part of the 154th Annual Meeting and Exhibition, TMS 2025

作者： Kumar, Sourabh Behera, Rohit Pratyush Le Ferrand, Hortense School of Mechanical and Aerospace Engineering Nanyang Technological University Singapore Singapore School of Materials Science and Engineering Nanyang Technological University Singapore Singapore

ISBN: (纸本)9783031806636

The orientation and distribution of constituting particles are the fundamentals in the formation of hierarchical structuresHierarchical structures. In this work, theMagnetically assisted slip-casting magnetically assisted slip castingSlip Casting (MASC) process has been explored to obtain complex hierarchical structuresHierarchical structures composed of ceramicsCeramics and metals, combined to get the benefits of both materials. The process employs a slurry containing ceramicCeramics microplatelets and metal flakes, which serve as the fundamental building blocks for creating complex architectures. The quality of the microstructural alignment is significantly influenced by the total solid content in the slurry, 25 vol % total solid concentration is identified as the optimal recipe to control the microstructural alignment. Additionally, 20 µm copper flakes demonstrate superior packing and higher relative density compared to larger copper flakes. The challenge of inhomogeneous phase distribution is also addressed, and MASC is proposed as one of the promising solutions, facilitating both uniform and variable distribution of phases. The fabrication of multi-layered structures and unidirectional layered structures with different material combinations showcases the versatility of the process. Overall, this work highlights the potential of MASC as a facile and versatile technique for the fabrication of hierarchical ceramicCeramics-metal structures, offering new avenues for advanced material design. © The Minerals, Metals & materials Society 2025.

关键词： Copper

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The Influence of Silicon Dioxide as a Fuel Additive in a Diesel Engine Fuelled by Pure Palm Oil 4

The Influence of Silicon Dioxide as a Fuel Additive in a Die...

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4th International Symposium on Advances and Innovation in mechanical engineering, ISAIME 2023

作者： Prahmana, Rico Aditia Darmanto, Prihadi Setyo Reksowardojo, Iman Kartolaksono Prakoso, Tirto Juangsa, Firman Bagja Doctoral Program of Mechanical Engineering Faculty of Mechanical and Aerospace Engineering Institut Teknologi Bandung Bandung40132 Indonesia Program Study of Mechanical Engineering Faculty of Industrial Technology Institut Teknologi Sumatera South Lampung35365 Indonesia Thermal Science and Engineering Research Group Faculty of Mechanical and Aerospace Engineering Institut Teknologi Bandung Bandung Indonesia Department of Chemical Engineering Faculty of Industrial Technology Institut Teknologi Bandung Bandung40132 Indonesia Program Study of Mechanical Engineering Faculty of Industrial Technology Universitas Pertamina Jakarta12220 Indonesia

In the last decade, the Indonesian government has implemented a program to use biodiesel as a substitute for fossil diesel to reduce dependence on fossil fuels. On the other hand, the development of biodiesel as an alternative fuel to replace fossil diesel has several challenges, one of which is the production of biodiesel, which is more complicated and requires a long process. However, the direct use of crude palm oil (CPO) in diesel engines is not recommended because it has many drawbacks. Research recently shows that fuel additives in diesel engines have promising prospects. Therefore, to solve the problem, this study used pure palm oil (PPaO) as the primary fuel, with the addition of silicon oxide (SiO2) as a fuel additive in diesel engines. The results showed that using SiO2 additive in PPaO can increase thermal efficiency by 18.8% at 60% load compared to diesel fuel (DF). Nevertheless, using this fuel increased specific fuel consumption (SFC) by 3.9% on average and increased the opacity by 153% compared to diesel fuel. These results indicate that SiO2 has the potential to be developed as an effective additive to PPaO fuel that can improve the efficiency and performance of diesel engines. © 2025 Institute of Physics Publishing. All rights reserved.

关键词： Biodiesel

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Can MXene act as universal solid lubricant: A prolix review

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Journal of Industrial and engineering Chemistry 2025年 148卷 329-344页

作者： Singh, Bipin Kumar Singh, Randeep Ahn, Young-Ho Samanta, Suprakash Centre for Augmented Intelligence and Design Department of Mechanical Engineering Sri Eshwar College of Engineering Coimbatore641202 India Department of Civil Engineering Yeungnam University Gyeongsan38541 Korea Republic of Department of Materials Science and Chemical Engineering Hanyang University Ansan15588 Korea Republic of Thuwal23955-6900 Saudi Arabia

This article covers the potential of MXenes as a versatile solid lubricant. MXenes are recognized for their potential across diverse applications ranging from energy storage to fields like biology and medicine. Recently, MXenes research experienced rapid growth in understanding the tribological characteristics due to the outstanding mechanical properties and chemical reactivities. The commercial applications are restricted due to the limited research on MXene-doped composites. The laid down physics, responsible for the improvement in the physical and functional properties is also important for better understanding. Hence, in this effort, the cutting-edge application of MXenes with other matrices is thoroughly discussed. This review explores the potential of next-generation MXenes, highlighting key factors that enhance their tribological properties and the fundamental mechanisms behind them. Later discussions highlight the application of MXenes with various matrices and their future importance. Lastly, the fundamental physics to improve MXene properties concisely concluded with the potential of future research. © 2025 The Korean Society of Industrial and engineering Chemistry

关键词： Tribology

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Depth prediction of plastic vortex toward vortex flow-based friction stir additive manufacturing

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Journal of Manufacturing Processes 2025年 147卷 127-132页

作者： Ye, Tao Pei, Xianjun Liu, Xiaochao Li, Wentao Wang, Xincheng Li, Yongzhe Ni, Zhonghua Shi, Lei Wu, Chuansong School of Mechanical Engineering Southeast University Nanjing211189 China Advanced Ocean Institute of Southeast University Nantong226000 China School of Materials Science and Engineering Shandong University Jinan250061 China

Vortex flow-based friction stir additive manufacturing (VFSAM) advances conventional FSAM by replacing the stir tool with a plastic vortex, eliminating tool wear in high-melting-point metals. However, the precise control of the vortex depth (which directly affects the deposition layer thickness and bonding quality) still faces the challenge of selecting process parameters. This study used the Order of Magnitude Scaling (OMS) method to establish a one-dimensional (1D) vortex depth analytical model, which enables rapid parameter selection for desired layer thickness. The core of the OMS method is to ignore the influence of secondary physical quantities and only retain the magnitude relationship of dominant factors, thereby achieving efficient parameter screening within the allowable error range. The 1D analytical model was applied to Ti-6Al-4V titanium alloy, with an objective function f (N, R) = NR identifying optimal parameters for maximum vortex depth. For Ti-6Al-4V, the optimal solution is f (N, R) = 6000, providing ideal parameters for achieving maximum depth. This streamlines the process optimization, enhancing VFSAM efficiency for high-performance applications. © 2025 The Society of Manufacturing Engineers

关键词： Vortex flow

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Production of biocrude oil through hydrothermal liquefaction of palm empty fruit bunch with ethanol co-solvent: A source of value-added chemicals

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Chemical engineering Research and Design 2025年 218卷 455-467页

作者： Teoh, Rui Hong Lee, Lai Yee Gan, Suyin Ng, Hoon Kiat Thangalazhy-Gopakumar, Suchithra Department of Chemical and Environmental Engineering Faculty of Science and Engineering University of Nottingham Malaysia Jalan Broga Selangor Semenyih43500 Malaysia Department of Mechanical Materials & Manufacturing Engineering Faculty of Science and Engineering University of Nottingham Malaysia Jalan Broga Selangor Semenyih43500 Malaysia

Palm empty fruit bunches (EFB) is the most abundant biomass from palm oil industries which needs further attention as a source of value-added materials. Hydrothermal liquefaction (HTL) of biomass at subcritical conditions can provide valuable products such as biocrude oil and hydrochar with minimum emission of CO2. In this work, hydrothermal liquefaction of EFB was investigated at different conditions such as 275 and 300 °C, in presence of organic solvents (ethanol, methanol, isopropanol) with a reaction time of 30 min and an initial pressure of 10 bar. In addition, the presence of an oxidation agent, hydrogen peroxide was also investigated in optimized conditions. GC-MS, FTIR, TGA, and CHNS were used to characterize the properties of the biocrude oil and hydrochar. The highest biocrude oil yield of 40.8 wt% was obtained at 275 °C with 40 vol% ethanol as co-solvent in water. GC-MS analysis indicated that the biocrude oil produced at these conditions was rich in phenolic and enone compounds. Pure ethanol solvent provided the lowest yield for biocrude oil, while the water-ethanol mixture provided a high yield of biocrude oil with different groups of value-added chemicals. Hydrochars were thermally stable until 250 °C and lost around 40 wt% at 900 °C. © 2025 Institution of Chemical Engineers

关键词： Ethanol

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Artificial Intelligence-Powered materials science

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Nano-Micro Letters 2025年第6期17卷 212-241页

作者： Xiaopeng Bai Xingcai Zhang Department of Materials Science and Engineering Stanford UniversityStanfordCA 94305USA Department of Mechanical Engineering The University of Hong KongHong Kong 999077People’s Republic of China Department of Physics The Chinese University of Hong KongShatinHong Kong 999077People’s Republic of China

The advancement of materials has played a pivotal role in the advancement of human civilization,and the emergence of artificial intelligence(AI)-empowered materials science heralds a new era with substantial potential to tackle the escalating challenges related to energy,environment,and biomedical concerns in a sustainable *** exploration and development of sustainable materials are poised to assume a critical role in attaining technologically advanced solutions that are environmentally friendly,energy-efficient,and conducive to human *** review provides a comprehensive overview of the current scholarly progress in artificial intelligence-powered materials science and its cutting-edge *** anticipate that AI technology will be extensively utilized in material research and development,thereby expediting the growth and implementation of novel *** will serve as a catalyst for materials innovation,and in turn,advancements in materials innovation will further enhance the capabilities of AI and AI-powered materials *** the synergistic collaboration between AI and materials science,we stand to realize a future propelled by advanced AI-powered materials.

关键词： Artificial intelligence Machine learning Sustainable materials Data-driven materials innovation

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Effect of rolling schedules on ridging resistance of ultra-thin ferritic stainless steel foil

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Journal of Iron and Steel Research International 2025年第1期32卷 198-214页

作者： Jing-wei Zhao Qing-zhong Xie Li-nan Ma Cun-long Zhou Zheng-yi Jiang Xi Liao Xiao-guang Ma College of Mechanical and Vehicle Engineering Taiyuan University of TechnologyTaiyuan030024ShanxiChina Engineering Research Center of Advanced Metal Composites Forming Technology and Equipment Ministry of EducationTaiyuan030024ShanxiChina National Key Laboratory of Metal Forming Technology and Heavy Equipment Ministry of Science and TechnologyTaiyuan030024ShanxiChina School of Mechanical Engineering Taiyuan University of Science and TechnologyTaiyuan 030024ShanxiChina School of Mechanical MaterialsBiomedical and Mechatronic EngineeringUniversity of WollongongWollongongNSW2522Australia Shanxi Taigang Stainless Steel Precision Strip Co. Ltd.Taiyuan 030006ShanxiChina

The effect of rolling schedules on the ridging resistance of ultra-thin ferritic stainless steel(FSS)430 foil was evaluated by studying the microstructure and *** results show that specimens processed with three-pass cold rolling under the reductions of 40%,40%and 31%,respectively,exhibit improved ridging resistance owing to the microstructural refinement and the texture structure optimization.A nearly 40%reduction of ridging height can be achieved using the proposed rolling schedule compared to the other two rolling *** addition,the effect of annealing temperature after cold rolling on the ridging resistance of FSS 430 foil is also found to be crucial,and an optimal annealing temperature of 900℃ is obtained for FSS 430 foil with high ridging ***,the improvement in the ridging resistance of FSS 430 foil can be attributed to the reduction in the fraction of{001}<110>and{114}<110>components by optimization of the rolling and annealing processes.

关键词： Ferritic stainless steel foil Ridging Cold rolling Annealing Microstructure Texture

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A critical step toward far-field laboratory diffraction contrast tomography in Laue focusing geometry

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Journal of Applied Crystallography 2025年第Pt 2期58卷 447-457页

作者： Zhang, Yubin Lindkvist, Adam Department of Mechanical Engineering Technical University of Denmark Kgs. Lyngby2800 Denmark Department of Industrial and Materials Science Chalmers University of Technology GothenburgSE 41296 Sweden

Recent simulations have demonstrated the promising potential of far-field laboratory diffraction contrast tomography (FF-LabDCT) in the Laue focusing geometry for 3D mapping of grain-averaged deviatoric strain tensors, achieving a strain uncertainty as low as 1 × 10-4 [Lindkvist & Zhang (2022). J. Appl. Cryst.55, 21-32]. The present work takes a critical step towards realizing this tool. It presents the first attempt at implementing FF-LabDCT using a Zeiss Xradia 520 Versa X-ray microscope, including both hardware and software development. A new algorithm, LabDBB, which adapts the previously developed dictionary-based branch and bound (DBB) principles, is implemented for indexing FF-LabDCT data. The performance of LabDBB is evaluated by comparing the indexed grain crystallographic orientations and center of mass positions with those obtained using near-field LabDCT within the same gauge volume of a fully recrystallized iron sample. Finally, the challenges related to fitting the grain-averaged deviatoric strain tensor using the current FF-LabDCT setup are identified. The strain analysis suggests that, once these challenges are addressed, a strain uncertainty as low as 2 × 10-4 could potentially be achieved. This work demonstrates the possibility for developing a tool capable of 3D grain-scale strain analysis with high strain precision in home laboratories. © Zhang & Lindkvist 2025.

关键词： Indexing (materials working)

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Unlocking Novel Functionality:Pseudocapacitive Sensing in MXene-Based Flexible Supercapacitors

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Nano-Micro Letters 2025年第4期17卷 212-229页

作者： Eunji Kim Seongbeen Kim Hyeong Min Jin Gyungtae Kim Hwi-Heon Ha Yunhui Choi Kyoungha Min Su-Ho Cho Hee Han Chi Won Ahn Jaewoo Roh Il-Kwon Oh Jinwoo Lee Yonghee Lee Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology(KAIST)291 Daehak-RoYuseong-GuDaejeon 34141Republic of Korea National Nano Fab Center(NNFC) 291 Daehak-RoYuseong-GuDaejeon 34141Republic of Korea Department of Organic Materials Engineering Chungnam National University99 Daehak-RoYuseong-GuDaejeon 34134Republic of Korea Department of Materials Science and Engineering Chungnam National University99 Daehak-RoYuseong-GuDaejeon 34134Republic of Korea Department of Nano&Advanced Materials Science and Engineering Kyungpook National University2559Gyeongsang-DaeroSangju-SiGyeongsangbuk-Do 37224Republic of Korea Department of Mechanical Engineering Korea Advanced Institute of Science and Technology(KAIST)291 Daehak-RoYuseong-GuDaejeon 34141Republic of Korea

Extensively explored for their distinctive pseudocapacitance characteristics,MXenes,a distinguished group of 2D materials,have led to remarkable achievements,particularly in the realm of energy storage *** work presents an innovative Pseudocapacitive *** key lies in switching the energy storage kinetics from pseudocapacitor to electrical double layer capacitor by employing the change of local pH(-log[H^(+)])in MXene-based flexible supercapacitors during *** sensing is observed in acidic electrolyte but absent in neutral *** shearing during bending causes liquid-crystalline MXene sheets to increase in their degree of anisotropic *** blocking of H+mobility due to the higher diffusion barrier,local pH *** electrochemical energy storage kinetics transits from Faradaic chemical protonation(intercalation)to non-Faradaic physical *** utilize the phenomenon of capacitance change due to shifting energy storage kinetics for strain sensing *** developed highly sensitive Pseudocapacitive Sensors feature a remarkable gauge factor(GF)of approximately 1200,far surpassing conventional strain sensors(GF:~1 for dielectric-cap sensor).The introduction of the Pseudocapacitive Sensor represents a paradigm shift,expanding the application of pseudocapacitance from being solely confined to energy devices to the realm of multifunctional *** technological leap enriches our understanding of the pseudocapacitance mechanism of MXenes,and will drive innovation in cutting-edge technology areas,including advanced robotics,implantable biomedical devices,and health monitoring systems.

关键词： MXenes Supercapacitors Pseudocapacitive sensing Local pH Operando measurements

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