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8th Asia Pacific Conference on Optics Manufacture, APCOM 2023 and 3rd International Forum of Young Scientists on Advanced Optical manufacturing, YSAOM 2023

作者： Liu, Yong Gao, Xibo Hu, Zubo Xue, Shuai Chen, Shanyong Huang, Cheng Du, Chunyang Hu, Hao Dai, Yifan Peng, Xiaoqiang Wang, Linfeng College of Intelligence Science and Technology National University of Defense Technology Changsha Hunan410073 China Hunan Key Laboratory of Ultra-Precision Machining Technology Changsha Hunan410073 China Laboratory of Science and Technology on Integrated Logistics Support National University of Defense Technology Changsha Hunan410073 China State Key of High Performance Complex Manufacturing Central South University Changsha Hunan410073 China

ISBN: (纸本)9781510672673

X-ray mirrors play a critical role in transmitting and focusing beams in advanced light source devices like synchrotron radiation (SR) and free electron laser (FEL) light sources. The Root-Mean-Square (RMS) value of surface shape accuracy required for these mirrors is typically sub-micro radian/sub-nanometer, and their aperture can be hundreds of millimeters or even meters. To achieve this accuracy, deterministic figuring is required and surface figure error is the premise. Interferometric stitching test is commonly utilized. However, interferometric test obtains the surface figure error relative to the reference surface. To obtain the absolute surface figure error of X-ray mirrors, it is crucial to obtain the surface figure error of the reference surface before or during stitching measurement and separate it from the stitching result. To achieve this, a reference surface self-calibration interferometric stitching algorithm based on Legendre polynomial fitting is reported. The algorithm fits the reference surface by orthogonal Legendre polynomials in the rectangular domain, and the polynomial coefficients are expressed as interlocking terms in the stitching algorithm. The fitting coefficients are optimized and fitted together with the free compensation terms, i. *** translation and tilt terms. The paper established the theoretical model of the algorithm and conducted simulations on an X-ray mirror with a length of 300 mm. A two dimensional stitching interferometry device was built. An X-ray mirror with a length of 300 mm was tested utilizing the proposed method. The short-Term repeatability was preliminarily analyzed. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

关键词： Synchrotron radiation

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Engineering multifunctional bioactive citrate-based biomaterials for tissue engineering

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Bioactive Materials 2023年第1期19卷 511-537页

作者： Min Wang Peng Xu Bo Lei Honghui Hospital Xi’an Jiaotong UniversityXi’an710000China Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research College of StomatologyXi’an Jiaotong UniversityXi’an710000China Frontier Institute of Science and Technology Xi’an Jiaotong UniversityXi’an710000China State-Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an710000China State Key Laboratory for Manufacturing Systems Engineering Xi’an Jiaotong UniversityXi’an710000China

Developing bioactive biomaterials with highly controlled functions is crucial to enhancing their applications in regenerative ***-based polymers are the few bioactive polymer biomaterials used in biomedicine because of their facile synthesis,controllable structure,biocompatibility,biomimetic viscoelastic mechanical behavior,and functional groups available for *** recent years,various multifunctional designs and biomedical applications,including cardiovascular,orthopedic,muscle tissue,skin tissue,nerve and spinal cord,bioimaging,and drug or gene delivery based on citrate-based polymers,have been extensively studied,and many of them have good clinical application *** this review,we summarize recent progress in the multifunctional design and biomedical applications of citrate-based *** also discuss the further development of multifunctional citrate-based polymers with tailored properties to meet the requirements of various biomedical applications.

关键词： Bioactive materials Bioactive polymers Citrate-based biomaterials Multifunctional modification Tissue engineering

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Mechanical Properties and Fracture Behavior of Laminated Heterostructured Composites Under Different Current Densities

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稀有金属材料与工程 2024年第10期53卷 2713-2717页

作者： Li Hushan Ding Chaogang Ding Ziheng Zhang Hao Wang Fanghui Chen Yuxi Bao Jianxing Xu Jie Guo Bin Shan Debin National Key Laboratory for Precision Hot Processing of Metals Harbin Institute of TechnologyHarbin 150001China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China Key Laboratory of Micro-Systems and Micro-Structures Manufacturing of Ministry of Education Harbin Institute of TechnologyHarbin 150001 Xi'an Rare Metal Materials Institute Co. LtdXi'an 710016China

The mechanical properties and fracture morphologies of Cu/Nb multilayer composites under electric-assisted tension(EAT)were *** show that the generated Joule-heat leads to obvious stress softening with the increase in current ***,the elongation decreases,which is closely related to the characteristic fracture behavior of Cu/Nb multilayer composites during *** fracture pattern is gradually transformed from ductile fracture to melt fracture with the increase in current density.

关键词： Cu/Nb multilayer composite electric-assisted tension mechanical properties fracture behavior

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Atomic surface of quartz glass induced by photocatalytic green chemical mechanical polishing using the developed SiO₂@TiO₂ core-shell slurry

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Nanoscale Advances 2023年第5期6卷 1380-1391页

作者： Fan, Yuanhang Zhang, Zhenyu Yu, Jiaxin Deng, Xingqiao Shi, Chunjing Zhou, Hongxiu Meng, Fanning Feng, Junyuan State Key Laboratory of High-performance Precision Manufacturing Dalian University of Technology Dalian 116024 China School of Manufacturing Science and Engineering Southwest University of Science and Technology Mianyang 621010 China School of Mechanical and Electrical Engineering Chengdu University of Technology Chengdu 610059 China School of Mechanical Engineering Hangzhou Dianzi University Hangzhou 310018 China School of Energy and Power Engineering Dalian University of Technology Dalian 116024 China

High-performance devices of quartz glass demand an atomic surface, which induces a challenge for chemical mechanical polishing (CMP) with a high material removal rate (MRR). Moreover, traditional CMP usually employs toxic and corrosive slurries, leading to the pollution of the environment. To overcome these challenges, a novel green photocatalytic CMP is proposed. In the CMP, SiO₂@TiO₂ core-shell abrasives were developed, and the CMP slurry included the developed abrasives, sodium carbonate, hydrogen peroxide and sorbitol. After photocatalytic CMP, the surface roughness S_a of quartz glass is 0.185 nm, with a scanning area of 50 × 50 μm², and the MRR is 8.64 μm h⁻¹. To the best of our knowledge, the MRR is the highest on such a big area of atomic surface for quartz glass. X-ray photoelectron spectroscopy reveals that SiO₂@TiO₂ core-shell abrasives were used as photocatalysts motivated by simulated solar light, generating electrons and holes and producing hydroxyl radicals through hydrogen peroxide. As a result, OH⁻ could combine with Si atoms on the surface of quartz glass, forming Si-OH-Si bonds. Then the formed bonds were removed based on the balance between chemical and mechanical functions. The proposed CMP, developed SiO₂@TiO₂ abrasives and slurry provide new insights to achieve an atomic surface of quartz glass with a high MRR. © 2024 RSC.

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Quantitatively mapping local quality of super-resolution microscopy by rolling Fourier ring correlation

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Light(science & Applications) 2023年第12期12卷 2826-2844页

作者： Weisong Zhao Xiaoshuai Huang Jianyu Yang Liying Qu Guohua Qiu Yue Zhao Xinwei Wang Deer Su Xumin Ding Heng Mao Yaming Jiu Ying Hu Jiubin Tan Shiqun Zhao Leiting Pan Liangyi Chen Haoyu Li Innovation Photonics and Imaging Center School of Instrumentation Science and EngineeringHarbin Institute of TechnologyHarbinChina Key Laboratory of Ultra-Precision Intelligent Instrumentation of Ministry of Industry and Information Technology Harbin Institute of TechnologyHarbinChina Biomedical Engineering Department International Cancer InstitutePeking University Cancer Hospital and InstituteHealth Science CenterPeking UniversityBeijingChina The Key Laboratory of Weak-Light Nonlinear Photonics of Education Ministry School of Physics and TEDA Institute of Applied PhysicsFrontiers Science Center for Cell ResponsesNankai UniversityTianjinChina State Key Laboratory of Membrane Biology Beijing Key Laboratory of Cardiometabolic Molecular MedicineInstitute of Molecular MedicineNational Biomedical Imaging CenterSchool of Future TechnologyPeking UniversityBeijingChina Department of Control Science and Engineering Harbin Institute of TechnologyHarbinChina School of Mathematical Sciences Peking UniversityBeijingChina Unit of Cell Biology and Imaging Study of Pathogen Host Interaction The Center for MicrobesDevelopment and HealthKey Laboratory of Molecular Virology and ImmunologyShanghai Institute of Immunity and InfectionChinese Academy of SciencesShanghaiChina School of Life Science and Technology Harbin Institute of TechnologyHarbinChina PKU-IDG/McGovern Institute for Brain Research BeijingChina Beijing Academy of Artificial Intelligence BeijingChina Frontiers Science Center for Matter Behave in Space Environment Harbin Institute of TechnologyHarbinChina Key Laboratory of Micro-Systems and Micro-Structures Manufacturing of Ministry of Education Harbin Institute of TechnologyHarbinChina

In fluorescence microscopy,computational algorithms have been developed to suppress noise,enhance contrast,and even enable super-resolution(SR).However,the local quality of the images may vary on multiple scales,and these differences can lead to *** mapping methods fail to finely estimate the local quality,challenging to associate the SR scale ***,we develop a rolling Fourier ring correlation(rFRC)method to evaluate the reconstruction uncertainties down to SR *** visually pinpoint regions with low reliability,a filtered rFRC is combined with a modified resolution-scaled error map(RSM),offering a comprehensive and concise map for further *** demonstrate their performances on various SR imaging modalities,and the resulting quantitative maps enable better SR images integrated from different ***,we expect that our framework can become a routinely used tool for biologists in assessing their image datasets in general and inspire further advances in the rapidly developing field of computational imaging.

关键词： resolution local enable

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Influence of Nanoceramic Particle Size on the Wear Resistance of Micro-Arc Oxidation Coatings for 2a12 Aluminum Alloy

SSRN

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SSRN 2024年

作者： Li, Wen Cheng, Ming Zhang, Xiaochen Wei, Guoke Aviation Key Laboratory of Science and Technology on Advanced Surface Engineering AVIC Manufacturing Technology Institute Beijing100024 China Science and Technology on Power Beam Processes Laboratory AVIC Manufacturing Technology Institute Beijing100024 China

The 2A12 aluminum alloy, renowned for its exceptional mechanical properties, faces significant limitations in applications involving abrasive environments or frequent contact with other surfaces due to its inadequate wear resistance. This shortcoming substantially reduces the service life of components and escalate maintenance costs, highlighting the urgent need for advanced surface modification techniques. This study meticulously investigates the influence of nanoceramic particle size on the wear resistance of micro-arc oxidation (MAO) coatings, a surface modification method known for forming dense, adherent ceramic layers on aluminum alloys. The systematic experimentation revealed that the incorporation of 150 nm α-Al2O3 nanoparticles into the MAO matrix achieves an optimal dispersion, leading to a substantial enhancement in wear resistance. The sample with 5g/L of 150 nm α-Al2O3 nanoparticles doping in the MAO electrolyte demonstrated the lowest mass loss, underscoring its superior wear resistance. The improved microstructure, enriched with hard ceramic phases such as α-Al2O3 and mullite, plays a pivotal role in withstanding wear. Moreover, this study identified that an optimal balance of surface roughness and coating thickness is essential for achieving enhanced wear resistance. The findings of this research provide a compelling strategy for the design of wear-resistant coatings tailored for high-performance applications across aerospace, automotive, and general engineering industries. By optimizing the particle size and concentration in MAO coatings, this study paves the way for the development of durable materials capable of thriving in demanding environments, thereby extending the service life and reducing maintenance requirements of components. © 2024, The Authors. All rights reserved.

关键词： Wear resistance

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New analytical model of elastic-plastic contact for three-dimensional rough surfaces considering interaction of asperities

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Friction 2022年第2期10卷 217-231页

作者： Yuqin WEN Jinyuan TANG Wei ZHOU Lin LI Caichao ZHU State Key L aboratory of High Performance Complex Manufacturing Central South University.Changsha 410083.China Hunan Provincial Key Laboratory of High Efficiency and Precision Machining of Difficult-to-Cut Material Hunan University of Science and TechnologyXiangtan 411201China State Key Laboratory of Mechanical Transmission Chongqing UniversityXiangtan 400044China

The contact calculation of three-dimensional real rough surfaces is the frontier field of tribology and surface *** this study,we consider the interaction and elastic-plastic deformation characteristics of asperities and further,propose an analytical contact calculation method for rough surfaces considering the interaction of *** on the watershed algorithm,the rough surface is segmented and the asperities are reconstructed into *** to the height relationship between the asperities,the definition of the deformation reference height of the matrix between each couple of asperities is ***,the calculation formula of the substrate deformation is provided according to the local contact pressure considering the elastic-plastic deformation of the asperity,and the contact state under a specific load is determined using the iterative correction *** results correspond with those of finite element numerical calculation and the study reveals the following:(1)compared with the results obtained without considering the asperity interaction,contact area,distance,and stiffness will be reduced by 6.6%,19.6%,and 49.5%,respectively,when the influence of asperity interaction is considered;(2)the interaction of the asperities has the greatest influence on the surface contact distance and *** the same load,the existence of asperity interaction will reduce the contact distance,area,and stiffness;(3)considering the interaction of the asperities,the higher asperity will bear more load,but it will simultaneously reduce the contact of the surrounding area and increase that of the distant *** calculation method proposed in this study has the advantages of high calculation efficiency and accuracy,thus,providing the calculation basis and method for subsequent studies on service performance of rough surfaces,such as the calculation of contact stiffness and fatigue performance analysis of rough surfaces.

关键词： calculation method contact analysis interaction of asperities rough surface

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Magnetostrictive strain-sensitivity synergy for laser-beam powder bed fusion processed Fe81Ga19 alloys by magnetic field annealing

Advanced Powder Materials

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Advanced Powder Materials 2024年第5期3卷 69-79页

作者： Xiong Yao Desheng Li Chengde Gao Youwen Deng Jing Zhang Cijun Shuai State Key Laboratory of Precision Manufacturing for Extreme Service Performance College of Mechanical and Electrical EngineeringCentral South UniversityChangsha 410083China Department of Spine Surgery The Third Xiangya HospitalCentral South UniversityChangsha 410013China LaTIM INSERM-UMR1101University of Brest29200BrestFrance Institute of Additive Manufacturing Jiangxi University of Science and TechnologyNanchang 330013China

Magnetostrictive Fe-Ga alloys have been demonstrated potentialities for numerous applications,whereas,suffering a tradeoff between large magnetostrictive strain and high ***,bulk polycrystalline Fe81Ga19 alloys were prepared by laser-beam powder bed fusion(LPBF)and then annealed in magnetic field for manipulating the comprehensive magnetostrictive *** indicate that<001>oriented grains are developed in the LPBF-prepared Fe81Ga19 alloys due to high temperature *** magnetic field annealing(MFA),the magnetic domains within the alloys gradually transformed into well-arranged stripe domains,especially,flat and smooth 90°domains were established in the alloys annealed at 2600 *** a result,the induced<001>orientation grains and 90°domains contributed to an improved effective magnetic anisotropy constant(57.053 kJ/m^(3)),leading to an enhanced magnetostrictive strain of 92 ***,the MFA-treated alloys also displayed enhanced magnetostrictive sensitivity(0.097 ppm/Oe)owing to the smooth domain structures and low dislocation densities,demonstrating a fruitful strain-sensitivity *** addition,good magnetostrictive dynamic response and enhanced compressive yield strength were also observed for the prepared *** work demonstrates that LPBF and MFA might be an attractive strategy to resolve the tradeoff between strain and sensitivity,providing a basis for the preparation of high-performance magnetostrictive materials.

关键词： Laser-beam powder bed fusion Magnetic field annealing Magnetostrictive strain Magnetostrictive sensitivity Fe-Ga alloys

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Surface Integrity of Inconel 738LC Parts Manufactured by Selective Laser Melting Followed by High-speed Milling

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Chinese Journal of Mechanical Engineering 2023年第1期36卷 65-79页

作者： Guanhui Ren Sai Guo Bi Zhang Department of Mechanical and Energy Engineering Southern University of Science and TechnologyShenzhen518055China Shenzhen Key Laboratory for Additive Manufacturing of High-performance Materials Shenzhen518055China Research and Development Department Shenzhen Xinjinquan Precision Techonology Co.Ltd.Shenzhen518055China School of Mechanical Engineering Shandong UniversityJinan250061China

This study is concerned with the surface integrity of Inconel 738LC parts manufactured by selective laser melting(SLM)followed by high-speed milling(HSM).In the investigation process of surface integrity,the study employs ultradepth three-dimensional microscopy,laser scanning confocal microscopy,scanning electron microscopy,electron backscatter diffractometry,and energy dispersive spectroscopy to characterize the evolution of material microstructure,work hardening,residual stress coupling,and anisotropic effect of the building direction on surface integrity of the *** results show that SLM/HSM hybrid manufacturing can be an effective method to obtain better surface quality with a thinner machining metamorphic ***-speed machining is adopted to reduce cutting force and suppress machining heat,which is an effective way to produce better surface mechanical properties during the SLM/HSM hybrid manufacturing *** general,high-speed milling of the SLM-built Inconel 738LC samples offers better surface integrity,compared to simplex additive manufacturing or casting.

关键词： Surface integrity Inconel 738LC Selective laser melting High-speed milling

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Effect of processing parameters on the microstructure and mechanical properties of TiAl/Ti_(2)AlNb laminated composites

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Journal of Materials science & technology 2022年第14期109卷 228-244页

作者： Donghai Li Binbin Wang Liangshun Luo Xuewen Li Yanjin Xu BinQiang Li Diween Hawezy Liang Wang Yanqing Su Jingjie Guo Hengzhi Fu National Key Laboratory for Precision Hot Processing of Metals School of Materials Science&EngineeringHarbin Institute of TechnologyHarbin 150001China Key Laboratory for Lightweight Materials Nanjing Tech UniversityNanjing 211816China AVIC Manufacturing Technology Institute Beijing 100024China Materials Research Centre College of EngineeringSwansea UniversityBay CampusSwansea SA18ENUK

In order to improve the intrinsic brittleness of TiAl alloys,Ti_(2)AlNb alloys with outstanding ductility and toughness at room temperature,and good high-temperature performance are competitive candidates in constructing the TiAl-based laminated *** this work,TiAl/Ti_(2)AlNb laminated composites are successfully synthesized by vacuum hot pressing combined with the foil-foil(sheet)*** the pressure of 65 MPa,different holding time and temperature of hot pressing are tried and the optimized fabrication parameter is acquired as 1050℃/120 min/65 *** with the changes of processing parameters,the defect,microstructure,interface,phase transformation and the corresponding mechanical properties are detailly *** results show that the TiAl/Ti_(2)AlNb laminated composite fabricated at 1050℃ for 2 h achieves a good metallurgical interface *** corresponding interface microstructure is composed of region I and region *** region I consists of O,α_(2)and B2/βphase,and region II is made up ofα***,the tensile tests indicate that the composite synthesized at 1050℃ for 2 h possesses a maximum strength of 812 MPa and a total elongation of 1.31%at room temperature,and a strength of 539.71 MPa and the highest total elongation of 10.34%at 750℃.The well synergistic deformation ability between the interface and the two base alloys endows the composite an excellent tensile ***,the composite processed at 1050℃ for 2 h behaves the best fracture toughness in both arrester orientation and divider orientation with the value of 32.6 MPa.m^(1/2)and 30.1 MPa.m^(1/2),*** Ti_(2)AlNb alloy in the laminated structure effectively release the stress around the crack tip and plays a role in ***,crack deflection,crack bridging,crack blunting and fragmentation also make contributions to enhance the fracture toughness of the laminated composites.

关键词： TiAl/Ti_(2)AlNb laminated composite Hot pressing Processing parameters Microstructure Mechanical properties Fracture

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