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Chinese Journal of Mechanical Engineering 2022年第3期35卷 219-226页

作者： Chong Wang Daobing Chen yan Zhou Zhuoming Xie Qianfeng Fang Shifeng Wen chunze yan State Key Laboratory of Material Processing and Die&Mold Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China Faculty of Engineering China University of GeosciencesWuhan 430074China Key Laboratory of Materials Physics Institute of Solid State PhysicsChinese Academy of SciencesHefei 230031China

A comparative study on the influence of different manufacturing methods(selective laser melting and hot rolling)on the microstructure,mechanical and thermal behaviours of tungsten(W)was presented for the first *** results indicated that the selective laser melting(SLM)W exhibited a finer grain sizes,a lower strength ductility,hardness and thermal conductivity compared to hot-rolled *** main reason for this result was that the laser underwent rapid heating and cooling when it was used to melt W powder with high energy density,resulting in large internal stress in the sample after ***,the internal stress was released,leading to the generation of microcracks at the grain boundaries,thereby affecting the performance of SLM W *** addition,the higher fraction of high-angle grain boundaries(HAGBs)of SLM W was found to be the key factor for intrinsic *** the HAGBs are the preferred crack paths,which could promote crack propagation and decrease fracture energy.

关键词： Tungsten(W) Selective laser melting(SLM) Hot rolling Microstructure Thermal conductivity Mechanical property

3D-Printed Superhydrophobic and Magnetic Device That Can Self-Powered Sense A Tiny Droplet Impact

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Engineering 2022年第8期8卷 196-205页

作者： Xuan Zhang Qi Wang Ruiping Zou Bo Song chunze yan Yusheng Shi Bin Su State Key Laboratory of Material Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074China ARC Research Hub for Computational Particle Technology Department of Chemical EngineeringMonash UniversityClayton VIC 3800Australia

Three-dimensional(3D)-printed magnetic soft architectures have attracted extensive attention and research from the engineering and material *** force-driven shape deformation of such architectures causes a change in the magnetic field distribution,indicating the capability to convert mechanical energy to ***,we fabricate a flexible superhydrophobic and magnetic device by integrating two kinds of 3D printing *** 3D-printed magnetic device(3DMD)exhibits a long-term stable mechanoelectrical conversion capacity under consecutive water droplet *** output current of the 3DMD is higher than that of records in the existing *** with Maxwell numerical simulation,the mechanoelectrical conversion mechanism of the 3DMD is investigated,further guiding regulation of the diverse ***,three 3DMDs are integrated to light up a commercial light-emitting diode(LED)by a stream of collected *** a combined design incorporating energy conversion is believed to promisingly motive advances in the 3D printing field.

关键词： 3D printing Self-powered sensing Magnetic Waterdrops

Mechanical properties and microstructure characteristics of lattice-surfaced PEEK cage fabricated by high-temperature laser powder bed fusion

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Journal of Materials Science & Technology 2022年第30期125卷 105-117页

作者： Peng Chen Jin Su Haoze Wang Lei yang Haosong Cai Maoyuan Li Zhaoqing Li Jie Liu Shifeng Wen yan Zhou chunze yan Yusheng Shi State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan430074China School of Logistics Engineering Wuhan University of TechnologyWuhan430081China Faculty of Engineering China University of GeosciencesWuhan430079China

Porous structure design on the contact surface is crucial to promote the osseointegration of the intervertebral cage while preventing subsidence and ***,the stress response will undergo significant changes for the current random porous cages,which can directly affect the mechanical properties and long-term ***,this paper proposed a newly designed polyetheretherketone(PEEK)cage with the triply periodic minimal surface(TPMS)-structured lattice surfaces to provide tailored 3 D microporosity and studied the mechanical performance,stress/strain responses,and microstructure changes in *** lattice-surfaced PEEK cage mainly exhibits a multiple-point-plane stress transfer *** compression modulus and elastic limit can be adjusted by controlling the area of the Diamond TPMS surface while the energy absorption efficiency remains *** microstructure of high-strength PEEK is featured by the radial pattern ***,the double-stranded orthorhombic phase is more ordered,and the benzene plane subunit and lattice volume become more expanded.

关键词： Additive manufacturing Laser powder bed fusion Polyetheretherketone Intervertebral cage Mechanical properties

增材制造钛酸钡压电陶瓷的高温烧结与极化工艺研究

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硅酸盐通报 2024年第5期43卷 1772-1783页

作者：刘凯鲁超贺俊超李天杨沈春华闫春泽史玉升孙华君武汉理工大学硅酸盐建筑材料国家重点实验室武汉430070 武汉理工大学材料科学与工程学院武汉430070 武汉理工大学材料分析与测试中心武汉430070 华中科技大学材料成形与模具技术国家重点实验室武汉430074

为提高增材制造BaTiO_(3)压电陶瓷的综合性能,本文研究了BaTiO_(3)压电陶瓷的浆料剪切变稀特性及数字光处理(DLP)成型特性,揭示了DLP成型BaTiO_(3)压电陶瓷坯体在不同烧结温度条件下的致密化机制,探索了极化方向对DLP成型BaTiO_(3)陶瓷... 详细信息

为提高增材制造BaTiO_(3)压电陶瓷的综合性能,本文研究了BaTiO_(3)压电陶瓷的浆料剪切变稀特性及数字光处理(DLP)成型特性,揭示了DLP成型BaTiO_(3)压电陶瓷坯体在不同烧结温度条件下的致密化机制,探索了极化方向对DLP成型BaTiO_(3)陶瓷压电性能的影响规律。结果表明,调节高温烧结与极化工艺,可以在一定程度上改善DLP增材制造BaTiO_(3)压电陶瓷的电学性能。当烧结温度为1420℃、保温时间为2 h时,压电系数d_(33)最大,为163.4 pC/N,样品层间结合紧密,晶粒尺寸均匀。当Z轴与极化方向夹角由0°变为90°时,相对介电常数εr和d_(33)分别提高了29.37%和27.01%。当固含量为80%(质量分数)、烧结温度为1420℃、Z轴与极化方向夹角为90°时,样品d_(33)最大,达到182.4 pC/N。

关键词：压电陶瓷钛酸钡增材制造数字光处理烧结极化

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Development of Fe-Mn-Si-Cr-Ni shape memory alloy with ultrahigh mechanical properties and large recovery strain by laser powder bed fusion

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Journal of Materials Science & Technology 2023年第19期150卷 201-216页

作者： Xiao yang Lijin Cheng Huabei Peng Bingnan Qian Lei yang Yunsong Shi Annan Chen Zhengyan Zhang Libin Zhao Ning Hu chunze yan Yusheng Shi State Key Laboratory of Materials Processing and Die and Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China School of Mechanical Engineering Hebei University of TechnologyTianjin 300401China School of Mechanical Engineering Sichuan UniversityChengdu 610065China Department of Mechanical and Energy Engineering Southern University of Science and TechnologyShenzhen 518055China School of Transportation and Logistics Engineering Wuhan University of TechnologyWuhan 430070China Department of Orthopaedics Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China

This work systematically studied the effect of volumetric energy density E on the densification,mi-crostructures,tensile mechanical properties,and shape memory performance of a Fe-Mn-Si-Cr-Ni shape memory alloy(SMA)fabricated by laser powder bed fusion(L-PBF).An E of 90-265 J/mm3 is suggested to fabricate the Fe-Mn-Si-Cr-Ni SMA with minor metallurgical defects and a high relative density of above 99%.The increase in E can promote the formation of the primaryγaustenite and the solid phase trans-formation from the primaryδferrite to theγaustenite,which helps to achieve a nearly complete y austenitic *** increase in E also contributes to fabricating the Fe-Mn-Si-Cr-Ni SMA with superior comprehensive mechanical properties and shape memory performance by *** Fe-Mn-Si-Cr-Ni SMA with a combination of good ductility of around 30%,high yield strength of above 480 MPa,an ultrahigh ultimate tensile strength of above 1 GPa,and large recovery strain of about 6%was manu-factured by L-PBF under a high E of 222-250 J/mm^(3).The good shape memory effect,excellent compre-hensive mechanical properties,and low cost of Fe-Mn-Si-Cr-Ni SMAs,as well as the outstanding ability to fabricate complex structures of L-PBF technology,provide a solid foundation for the design and fabri-cation of novel intelligent structures.

关键词： Shape memory alloys Fe-Mn-Si-based alloys Laser powder bed fusion Mechanical property Microstructure

Multimaterial additive manufacturing manipulator for fabricating magnetoelectric pressure sensors

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Science China(Technological Sciences) 2022年第11期65卷 2542-2550页

作者： LIU ZhuFeng LI ZhaoQing WANG Qi WANG yan yanG Lei NIE Xiang GENG Peng WU ZhenHua TANG SiHan yanG Lei WU HongZhi SHI YunSong CHEN Peng SU Bin ZHANG LiChao yan chunze SHI YuSheng State Key Laboratory of Materials Processing and Die&Mould Technology Huazhong University of Science and Technology Wuhan 430074China State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and TechnologyWuhan 430074China Schol of Materials Science and Enginering Wuhan Insitute of TechnologyWuhan 430205Chinai School of Transportation and Logisis Engineering Wuhan University of TechnologyWuhan 430063China Deparment of Orthopaedics Union HospitalTongji Medical CollegeHuazhong University of Science and Technology Wuhan 430030China

The simultaneous placement of different types of materials including polymers,ceramics,and metals,in their desired positions could be adopted to manufacture end-use devices/apparatuses with diverse functionalities and significantly reduce the fabrication cost and ***,existing additive manufacturing(AM)approaches can only treat one material species at a time due to their intrinsic working *** we develop an AM manipulator for manufacturing a wide variety of material species,including polymers,ceramics,and metals,through a multifilament transport strategy assisted by laser *** six-jaw manipulator contains three pairs of filament delivering/cutting systems for transporting diverse materials and a beam of tunable laser as the thermal *** whole apparatus is integrated into a robotic manipulator to create a multifreedom manufacturing *** this innovation,products with multiple material species and desired complex geometries can be fabricated on ***,we synthesize a multimaterial(polymer/ceramic/metal)printed magnetoelectric pressure sensor that can convert applied mechanical forces to electricity and maintain efficiency even after undergoing 10000 cycles of pressure/*** this multimaterial filament transport and laser manufacturing strategy,our AM manipulator exhibits promising application in the advanced manufacturing of embedded electronics,sensors,soft robotics,and customizable medical devices.

关键词： multiple materials additive manufacturing laser manipulator magnetoelectric

Low intensity near-infrared light promotes bone regeneration via circadian clock protein cryptochrome 1

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International Journal of Oral Science 2022年第4期14卷 584-594页

作者： Jinfeng Peng Jiajia Zhao Qingming Tang Jinyu Wang Wencheng Song Xiaofeng Lu Xiaofei Huang Guangjin Chen Wenhao Zheng Luoying Zhang Yunyun Han chunze yan Qian Wan Lili Chen Department of Stomatology Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina School of Stomatology Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration WuhanChina Key Laboratory of Molecular Biophysics of Ministry of Education College of Life Science and TechnologyHuazhong University of Science and TechnologyWuhanChina Department of Neurobiology School of Basic Medicine and Tongji Medical CollegeHuazhong University of Science&TechnologyWuhanChina State key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhanChina Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation School of PharmacyHuazhong University of Science and TechnologyWuhanChina

Bone regeneration remains a great clinical challenge. Low intensity near-infrared(NIR) light showed strong potential to promote tissue regeneration, offering a promising strategy for bone defect regeneration. However, the effect and underlying mechanism of NIR on bone regeneration remain unclear. We demonstrated that bone regeneration in the rat skull defect model was significantly accelerated with low-intensity NIR stimulation. In vitro studies showed that NIR stimulation could promote the osteoblast differentiation in bone mesenchymal stem cells(BMSCs) and MC3T3-E1 cells, which was associated with increased ubiquitination of the core circadian clock protein Cryptochrome 1(CRY1) in the nucleus. We found that the reduction of CRY1 induced by NIR light activated the bone morphogenetic protein(BMP) signaling pathways, promoting SMAD1/5/9 phosphorylation and increasing the expression levels of Runx2 and Osterix. NIR light treatment may act through sodium voltage-gated channel Scn4a, which may be a potential responder of NIR light to accelerate bone regeneration. Together, these findings suggest that low-intensity NIR light may promote in situ bone regeneration in a CRY1-dependent manner, providing a novel, efficient and non-invasive strategy to promote bone regeneration for clinical bone defects.

关键词： stimulation intensity light

3D/4D printed bio-piezoelectric smart scaffolds for next-generation bone tissue engineering

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International Journal of Extreme Manufacturing 2023年第3期5卷 236-262页

作者： Annan Chen Jin Su Yinjin Li Haibo Zhang Yusheng Shi chunze yan Jian Lu State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074People’s Republic of China Engineering Research Center of Ceramic Materials for Additive Manufacturing Ministry of EducationWuhan430074People’s Republic of China Centre for Advanced Structural Materials Department of Mechanical EngineeringCity University of Hong KongPeople’s Republic of China Centre for Advanced Structural Materials City University of Hong Kong Shenzhen Research InstituteGreater Bay Joint DivisionShenyang National Laboratory for Materials ScienceShenzhen 518057People’s Republic of China CityU-Shenzhen Futian Research Institute Shenzhen 518045People’s Republic of China

Piezoelectricity in native bones has been well recognized as the key factor in bone ***,bio-piezoelectric materials have gained substantial attention in repairing damaged bone by mimicking the tissue’s electrical microenvironment(EM).However,traditional manufacturing strategies still encounter limitations in creating personalized bio-piezoelectric scaffolds,hindering their clinical ***-dimensional(3D)/four-dimensional(4D)printing technology based on the principle of layer-by-layer forming and stacking of discrete materials has demonstrated outstanding advantages in fabricating bio-piezoelectric scaffolds in a more complex-shaped ***,4D printing functionality-shifting bio-piezoelectric scaffolds can provide a time-dependent programmable tissue EM in response to external stimuli for bone *** this review,we first summarize the physicochemical properties of commonly used bio-piezoelectric materials(including polymers,ceramics,and their composites)and representative biological findings for bone ***,we discuss the latest research advances in the 3D printing of bio-piezoelectric scaffolds in terms of feedstock selection,printing process,induction strategies,and potential ***,some related challenges such as feedstock scalability,printing resolution,stress-to-polarization conversion efficiency,and non-invasive induction ability after implantation have been put ***,we highlight the potential of shape/property/functionality-shifting smart 4D bio-piezoelectric scaffolds in bone tissue engineering(BTE).Taken together,this review emphasizes the appealing utility of 3D/4D printed biological piezoelectric scaffolds as next-generation BTE implants.

关键词： 3D/4D printing bio-piezoelectric materials biomimetic scaffolds electrical microenvironment bone regeneration

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梯度极小曲面点阵结构力学特性研究

华中科技大学学报（自然科学版） 2022年第12期50卷 64-69页

作者：杨磊郑浩张聪闫春泽武汉理工大学交通与物流学院湖北武汉430063 华中科技大学材料科学与工程学院湖北武汉430074

基于螺旋(Gyroid)型极小曲面点阵结构,设计包括两种线性渐变和两种矩阵渐变的四种梯度结构,通过实验及有限元分析方法分析了梯度设计对Gyroid型极小曲面点阵结构力学特性的影响.结果表明:通过激光选区熔化制备的样品致密度均在98%以上,... 详细信息

基于螺旋(Gyroid)型极小曲面点阵结构,设计包括两种线性渐变和两种矩阵渐变的四种梯度结构,通过实验及有限元分析方法分析了梯度设计对Gyroid型极小曲面点阵结构力学特性的影响.结果表明:通过激光选区熔化制备的样品致密度均在98%以上,具有极高的制备精度和可重复性;压缩实验表明四种梯度结构的变形过程一致,均是结构整体坍塌;与均匀结构对比,梯度结构的弹性模量提高了10%,10%-20%-10%梯度设计结构的累计能量吸收值最大.此外,对结构进行了有限元仿真,结果表明压缩过程中应力集中发生在转角处.

关键词：点阵结构梯度设计力学特性有限元矩阵渐变线性渐变

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柔性磁电材料体系及其增材制造研究进展

机械工程学报 2023年第18期59卷 130-143页

作者：苏彬闫春泽史玉升华中科技大学材料成形与模具技术国家重点实验室武汉430074

柔性磁电材料,是将低弹性模量的磁性物质和导电物质分散在柔性介质中的一类复合材料。柔性磁电材料体系着重于“磁性材料”与“导电材料”的协同作用。在外力作用下,体系内“磁性部分”与“导电部分”之间相互作用发生改变,从而获得力-... 详细信息

柔性磁电材料,是将低弹性模量的磁性物质和导电物质分散在柔性介质中的一类复合材料。柔性磁电材料体系着重于“磁性材料”与“导电材料”的协同作用。在外力作用下,体系内“磁性部分”与“导电部分”之间相互作用发生改变,从而获得力-电的转换性能。综述目前柔性磁电材料体系的研究进展;归纳三种柔性磁电材料体系的工作方式,即外力作用下柔性磁部分发生形变、柔性导电部分发生形变以及柔性磁部分与柔性导电部分之间的作用距离改变;介绍基于粉材、丝材以及光固化增材制造技术成形的柔性磁电材料体系,总结其在自供能感知与能源俘获领域的应用,最后探讨柔性磁电材料体系目前存在的问题及发展趋势。通过对新型柔性磁电材料的设计与制造进行阶段性总结,为其后续在人机交互、柔性传感及医疗康复领域的应用奠定了基础。

关键词：柔性磁电增材制造自供能感知能源俘获

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