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| 1 | Rolling texture and its effect on tensile property of a near-α titanium alloy Ti60 plate显示文摘Rolling texture and its effect on tensile properties of Ti60 alloy plates were investigated in the present study. The plates were β-rolled at 1070℃ and(α+β)-rolled at 980℃, using uni-directionally rolling(UDR) and cross-directionally rolling(CDR) processes, respectively.β-rolled plates exhibited weak textures, which were attributed to the dispersive orientations of secondary α during the β→α phase transformation. Strong deformation textures formed in(α+β)-rolled plates as a result of slipping mechanisms: the strong T-type texture in UDR plate was related to {10 1 0}[11 2 0] slipping, while the B-type texture in CDR plate was relevant with {0001}[11 2 0] slip. Strong T-type textures led to anisotropic tensile properties. B-type textures would decrease such an anisotropy. The(α+β)-CDR process was found to be a candidate process for reducing anisotropy of Ti60 alloy plates. | Wenyuan Li Zhiyong Chen Jianrong Liu Shaoxiang Zhu Guoxin Sui Qingjiang Wang | 2019 | Journal of Materials Science & Technology2019，35，5： | 11 |
| 2 | Microstructural evolution and FCC twinning behavior during hot deformation of high temperature titanium alloy Ti65显示文摘Although the development of titanium alloys with working temperatures above 600?C faces enormous difficulties and challenges,the related research has not stopped.In the present work,detailed analyses on microstructure evolution and hot deformation behavior of a new temperature resistant 650?C titanium alloy Ti65 were investigated from micrometer scale to nanometer scale.The results revealed that lamellarαgrains gradually fragmentized and spheroidized during theα+βphase region compression and the orientation of the c-axis ofαgrains gradually aligned to radial directions,forming two high Schmid factors(SFs)value texture eventually with the increase of strain to 0.7.Moreover,there were some strengthening characters in theα+βphase region such as lenticularαsand nano silicide(TiZr)6 Si3.In theβphase region,fine equiaxed dynamic recrystallized(DRX)βgrains were formed.Besides,the variant selection ofαm′artensite followed Burgers orientation relationship during the compression process.The main deformation mechanisms of theα+βphase region were dislocation slip and orientation dependent spheroidization.Whereas,the deformation process in theβphase region was controlled byβgrain DRX.Interestingly,many nano scale FCC twins were generated at the interface ofαl′ath during deforming in theβphase region,which was firstly observed in Ti65 alloy. | Zhixin Zhang Jiangkun Fan Bin Tang Hongchao Kou Jian Wang Xin Wang Shiying Wang Qingjiang Wang Zhiyong Chen Jinshan Li | 2020 | Journal of Materials Science & Technology2020，47，14： | 10 |
| 3 | Mechanical properties of electron beam welded dissimilar joints of TC17 and Ti60 alloys显示文摘Microstructure, hardness, tensile and high cycle fatigue(HCF) properties of the welded dissimilar joints of Ti60 and TC17 titanium alloys had been investigated in this study. A significant microstructural change was observed to occur after welding, with rod-like α and β phases in the fusion zone(FZ), equiaxed αphases, fine α laths and β phases in the heat-affected zone(HAZ) of TC17 side and acicular martensiteα' phases+ 'ghost' α phases in the HAZ of Ti60 side. The microhardness across the joints exhibited an inhomogeneous distribution with the highest hardness of ~404 HV in FZ and the lowest hardness of^304 HV in base material(BM) of Ti60. All the joints tested in tension fractured at BM of Ti60 side.Fatigue limits of the joints at 107 cycles were 425 MPa at room temperature and 380 MPa at 400℃,respectively. Welding micropores were found to be the main source of fatigue crack initiation. | Chao Cheng Bingbing Yu Zhiyong Chen Jianrong Liu Qingjiang Wang | 2018 | Journal of Materials Science & Technology2018，34，10： | 10 |
| 4 | Review of ice-pavement adhesion study and development of hydrophobic surface in pavement deicing显示文摘Ice adhesion to materials is a significant concern in many fields. Hydrophobic surface has been used for anti-icing in fields of aircraft or transmission line, which prove to be efficacious and economical. However, such technique is seldom employed for road deicing,because of the texture and service environment of pavement. Instead, deicers such as rock salt are frequently used, which leads to serious corrosion problem of roads and bridges. In this paper, a number of studies that characterize mechanism of ice adhesion to common substrates, specifically to pavement, are reviewed. The most important researches undertaken on ice adhesion strength affecting factors are presented. An overview of studies carried out to find hydrophobic surface for asphalt and cement concrete pavement antiicing are presented. It was verified that the hydrophobicity had high correlation with icephobicity, and nano-engineered asphalt and cement concrete pavement surface exhibited favorable hydrophobicity, and also had good performance on weakening pavement-ice bonding. However, most ice-repelling pavements obtain hydrophobic surface via low surface energy coating, which could not exist on pavement for a long time under wheel abrasion. And the nano/micro structures on hydrophobic surfaces are also vulnerable and consumable. Thus, the long-term effect of hydrophobic surface still need to be improved,and durability of the hydrophobic surface should be the research and development priorities of ice-repelling pavement. | Huaxin Chen Yongchang Wu Huiyun Xia Bingyin Jing Qingjiang Zhang | 2018 | Journal of Traffic and Transportation Engineering(English Edition)2018，5，3： | 9 |
| 5 | Genome-wide Characterization of cis-acting Elements in the Promoters of Key Carotenoid Pathway Genes from the Main Species of Genus Citrus显示文摘Carotenoids are indispensable for both human health and plant survival.Citrus,is one of the fruit crops richest in carotenoid compounds,with approximately 115 kinds of carotenoids;tremendous diversity in carotenoids composition and concentration exists among various species,showing different colors from nearly white to crimson.The carotenoid biosynthetic pathway and the key carotenogenic genes have been identified in citrus;however,the underlying regulatory mechanisms remain unclear.In this study,among the main species of genus Citrus(primitive,wild,and cultivated),we detected carotenoids in flavedo using High-Performance Liquid Chromatography,and analyzed variations in cis-acting elements in the promoters of key carotenoid pathway genes.Intriguingly,both carotenoid composition and content were generally increased during the evolution of citrus,and the corresponding variations in the promoters were identified,including the gain or loss of critical environmental stress-responsive elements and hormone-responsive elements,which are closely associated with carotenoid enhancement.In addition,pummelo has the most heat-responsive elements,but the Mangshan mandarin does not have this element in the promoters of PSY,which is highly related to their geographical origin and indicate that temperature is a critical environmental signal influencing carotenoid accumulation.Moreover,the abscisic acid-responsive motif was rich in almost all the seven species,but the ethylene-responsive motif was deficient,which demystified the unique phytohormone regulation mechanism of carotenoid accumulation in citrus.Overall,our study provides new insights into the molecular regulatory mechanism of carotenoid enhancement in the evolution of citrus,which can facilitate breeding and cultivation efforts to improve the nutritional quality and esthetic value in citrus and hopefully other fruit crops. | Kaijie Zhu Qingjiang Wu Yue Huang Junli Ye Qiang Xu Xiuxin Deng | 2020 | Horticultural Plant Journal2020，6，6： | 8 |
| 6 | An Energy Efficient Design for UAV Communication With Mobile Edge Computing显示文摘This paper considers a UAV communication system with mobile edge computing(MEC).We minimize the energy consumption of the whole system via jointly optimizing the UAV's trajectory and task assignment as well as CPU's computational speed under the set of resource constrains.To this end,we first derive the energy consumption model of data processing,and then obtain the energy consumption model of fixed-wing UAV's flight.The optimization problem is mathematically formulated.To address the problem,we first obtain the approximate optimization problem by applying the technique of discrete linear state-space approximation,and then transform the non-convex constraints into convex by using linearization.Furthermore,a concave-convex procedure(CCCP) based algorithm is proposed in order to solve the optimization problem approximately.Numerical results show the efficacy of the proposed algorithm. | Lingyan Fan Wu Yan Xihan Chen Zhiyong Chen Qingjiang Shi | 2019 | China Communications2019，16，1： | 8 |
| 7 | Precipitates and alloying elements distribution in nearαtitanium alloy Ti65显示文摘Precipitates,including silicides and Ti3 Al(α2)phase,and alloying elements distribution in a near a titanium alloy Ti65(Ti-5.8 Al-4.0 Sn-3.5 Zr-0.5 Mo-0.3 Nb-1.0 Ta-0.4 Si-0.8 W-0.05 C)after solution treatment and aging process were characterized by using transmission electron microscopy(TEM)and atom probe tomography(APT).Quantitative composition analysis and TEM observation indicate that the silicides fit to(Ti,Zr)6(Sl,Sn)3.Zr exhibits aβ-stabilizing effect in near a titanium alloys but is weaker than otherβstabilizing elements.The enriching tendency of the alloying elements in the retainedβphase is in the order of Zr | Ke Yue Jianrong Liu Haijun Zhang Hui Yu Yuanyuan Song Qingmiao Hu Qingjiang Wang Rui Yang | 2020 | Journal of Materials Science & Technology2020，36，1： | 8 |
| 8 | An Enhanced LMI Approach for Mixed H2/H∞ Flight Tracking Control显示文摘在 Lyapunov 变量和系统矩阵之间联合造成追踪控制器设计的混合 H2/H 飞行的问题非凸。在提高的线性矩阵不平等(LMI ) 的帮助下来临,非凸的优化问题被转变成凸的 LMI 代表。建议联合被介绍松变量消除。而且,一个必要、足够的条件为追踪不仅稳定控制系统而且在正常情况和差错盒子中满足混合 H2/H 表演索引的控制器的混合 H2/H 飞行被导出。新提高的 LMI 代表提供解决非凸的优化问题的自由的另外的度,并且减少控制器设计的稳当。在研究环境的飞行器数据的模型的模拟结果(赞赏) 提高的 LMI 的优点接近的模型表演。 | ZHANG Qingjiang YE Sijun LI Yan WANG Xinmin | 2011 | Chinese Journal of Aeronautics2011，24，3： | 7 |
| 9 | Orientation dependent behavior of tensile-creep deformation of hot rolled Ti65 titanium alloy sheet显示文摘The mill products like sheet always have one or more severe textures inevitably,and its effect on mechanical properties is not a negligible issue.The orientation dependent tensile-creep behavior induced by rolling texture of Ti65 titanium alloy sheet has been systematically investigated at 650℃.There are some anisotropic characteristics between TD and RD of Ti65 sheet.The UTS and TYS of TD are higher than RD at 650℃.Besides,the creep endurance time of TD(172.6–174.5 h)is about three times longer than RD(55.6–65.1 h)at 650℃and 240 MPa.Moreover,the grains are inclined to form Texture III■after creep along with TD,but to form Texture I■after creep along with RD.Finally,the crack initiation site is different during creep in TD and RD.The reason for anisotropic properties of tensile and creep has been summarized in two aspects:(i)the change of the SFs(Schmid factors)value between TD and RD;(ii)the difference of creep mechanism between TD(grain boundary sliding)and RD(dislocation slip).Anisotropy of Ti65 sheet should be fully considered to increase structural efficiency in the engineering design and application. | Zhixin Zhang Jiangkun Fan Ruifeng Li Hongchao Kou Zhiyong Chen Qingjiang Wang Hailong Zhang Jian Wang Qi Gao Jinshan Li | 2021 | Journal of Materials Science & Technology2021，，16： | 7 |
| 10 | Effect of additives on the photovoltaic properties of organic solar cells based on triphenylamine-containing amorphous molecules显示文摘Photovoltaic performance of the organic solar cells(OSCs)based on 2-((5′-(4-((4-((E)-2-(5′-(2,2-dicyanovinyl)-3′,4-dihexyl-2,2′-bithiophen-5-yl)vinyl)phenyl)(phenyl)amino)styryl)-4,4′-dihexyl-2,2′-bithiophen-5-yl)methylene)malononitrile(L(TPAbTV-DCN))as donor and PC70BM as acceptor was optimized using 0.25 vol%high boiling point solvent additive of1-chloronaphthalene(CN),1,6-hexanedithiol(HDT),or 1,8-diodooctane(DIO).The optimized OSC based on L(TPA-bTVDCN)–PC70BM(1:2,w/w)with 0.25 vol%CN exhibits an enhanced power conversion efficiency(PCE)of 2.61%,with Voc of0.87 V,Jsc of 6.95 mA/cm2,and FF of 43.2%,under the illumination of 100 mW/cm2 AM 1.5 G simulated solar light,whereas the PCE of the OSC based on the same active layer without additive is only 1.79%.The effect of the additive on absorption spectra and the atomic force microscopy images of L(TPA-bTV-DCN)–PC70BM blend films were further investigated.The improved efficiency of the device could be ascribed to the enhanced absorption and optimized domain size in the L(TPA-bTV-DCN)–PC70BM blend film. | GAO Lei ZHANG Jing HE Chang ZHANG Yi SUN QingJiang LI YongFang | 2014 | Science China Chemistry2014，57，7： | 7 |
| 11 | Microstructure and Mechanical Properties of Electron Beam Welded Titanium Alloy Ti-6246显示文摘Electron beam welding(EBW) was applied to a 10-mm-thick plate cut from Ti-6246 compressor disk.The microstructural characteristics, microhardness and room temperature tensile properties were investigated. Microstructure observations indicated that there existed plenty of thin needle-like α platelets studding in the matrix of the columnar β grains in the as-welded fusion zone(FZ). Post-weld heat treatment(PWHT) led to the precipitation of small secondary α platelets in the β matrix in heat affected zone and FZ. The thickness and the density of α platelets increased as the temperature of PWHT increased from545 to 645°C. The microhardness across the Ti-6246 EBW joint exhibited a nonuniform distribution. The hardness increased with the decrease of distance to the weld center, and reached the maximum of 467 HV in FZ when PWHT was carried out at 595°C. All the weldments tested with tension were fractured at the base material(BM) and exhibited a ductile fracture mode. The major deformation barrier in BM was the platelet α/β interfaces, however, the major deformation barrier in FZ was found to be β grain boundaries and secondary α/β interfaces. The BM with thicker platelet α phases had lower strength than the other two zones in the joint, and the BM deformed first and led to fracture in this zone. | Guoqiang Wang Zhiyong Chen Jinwei Li Jianrong Liu Qingjiang Wang Rui Yang | 2018 | Journal of Materials Science & Technology2018，34，3： | 6 |
| 12 | PCR-RFLP analysis of mitochondrial DNA ND5/6 region among 3 subspecies of common carp (Cyprinus carpio L.)and its application to genetic discrimination of subspecies显示文摘Mitochondrial DNA ND5/6 region was studied by PCR-RFLP analysis among ten representative strains belonging to three subspecies (Cyprinus carpio carpio, Cypri-nus carpio haematopterus and Cyprinus carpio rubrofuscus) of common carp (Cyprinus carpio L.). A total of 2.4 kb frag-ment was amplified and subjected to restriction endonucle-ase analysis with nine restriction endonucleases subsequently.The results indicated that each subspecies owned one hyplo-type and four restriction enzymes (DdeⅠ, HaeⅢ, TaqⅠand MboⅠ) produced diagnostic restriction sites which could be used for discriminating the three subspecies and as molecu-lar genetic markers for assistant selective breeding of com-mon carp. | ZHOU Jianfeng, WANG Zhongwei, YE Yuzhen & WU Qingjiang State Key Laboratory of Freshwater Ecology and Biotechnology, Insti-tute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China Correspondence should be addressed to Wu Qingjiang (e-mail: qjwu@ihb.ac.cn) | 2003 | Chinese Science Bulletin2003，48，5： | 5 |
| 13 | Dwell and Normal Cyclic Fatigue Behaviours of Ti60 Alloy显示文摘An experimental study of dwell and normal cyclic fatigue behaviours was carried out using specimens from a Ti60 forging with a bimodal microstructure.Apparent decrease in the fatigue life was found under dwell fatigue condition as compared to that under normal cyclic condition.Strain produced in each cycle in dwell fatigued specimens was observed larger than that in its normal cyclic-fatigued counterparts.Interior crack initiation was found in most dwell fatigued specimens as compared to the subsurface crack initiation under normal cyclic fatigue condition.Flat and bright facets were found at crack initiation sites in both cases.The facet density is higher in dwell condition,which is consistent with the crystal orientation and Schmid factors analysis of a grains around secondary cracks using electron back-scattered diffraction(EBSD) methods.Dwell loading favours cleavage in a grains with their basal plane normals aligned no more than 15° to the loading axis,which may account for its lower fatigue life according to the present study. | Lina Yang Jianrong Liu Jun Tan Zhiyong Chen Qingjiang Wang Rui Yang | 2014 | Journal of Materials Science & Technology2014，30，7： | 5 |
| 14 | Synthesis and photovoltaic properties of a star-shaped molecule based on a triphenylamine core and branched terthiophene end groups显示文摘A new star-shaped donor-acceptor molecule has been synthesized for application as the donor material in solution-processed bulk-heterojunction organic solar cells (OSCs). The molecule consists of a triphenylamine (TPA) unit as the core and a donor unit with three arms containing benzo[1,2,5]thiadiazole (BT) acceptor units and 5,5''-dihexyl-2,2′:3′,2″-terthiophene (tTh) end groups. The molecule, denoted S(TPA-BT-tTh), exhibits a broad absorption band in the wavelength range 300-650 nm and high hole mobility of 1.1×10 -4 cm2 V -1 s 1 . An OSC device based on S(TPA-BT-tTh) as donor and [6,6]-phenyl C71 -butyric acid methyl ester (PC 70 BM) as the acceptor (1:3, w/w) exhibited a power conversion efficiency of 2.28% with a short circuit current density of 6.39 mA/cm2 under illumination of AM.1.5, 100 mW/cm2 . | GAO Lei ZHANG Jing HE Chang SHEN SuLing ZHANG Yi LIU HongTao SUN QingJiang LI YongFang | 2013 | Science China Chemistry2013，56，7： | 4 |
| 15 | Recent progress of composite solid polymer electrolytes for all-solid-state lithium metal batteries显示文摘In comparison with lithium-ion batteries(LIBs)with liquid electrolytes,all-solid-state lithium batteries(ASSLBs)have been considered as promising systems for future energy storage due to their safety and high energy density.As the pivotal component used in ASSLBs,composite solid polymer electrolytes(CSPEs),derived from the incorporation of inorganic fillers into solid polymer electrolytes(SPEs),exhibit higher ionic conductivity,better mechanical strength,and superior thermal/electrochemical stability compared to the single-component SPEs,which can significantly promote the electrochemical performance of ASSLBs.Herein,the recent advances of CSPEs applied in ASSLBs are presented.The effects of the category,morphology and concentration of inorganic fillers on the ionic conductivity,mechanical strength,electrochemical window,interfacial stability and possible Li+transfer mechanism of CSPEs will be systematically discussed.Finally,the challenges and perspectives are proposed for the future development of high-performance CSPEs and ASSLBs. | Qingjiang Yu Kecheng Jiang Cuiling Yu Xianjin Chen Chuanjian Zhang Yi Yao Bin Jiang Huijin Long | 2021 | Chinese Chemical Letters2021，32，9： | 4 |
| 16 | Effects of substrate and transfer on CVD-grown graphene over sapphire-induced Cu films显示文摘We differentiated the effects of Cu films deposited on single crystalline a-,r-,and c-plane sapphire substrates upon graphene films synthesized with atmospheric pressure chemical vapor deposition(CVD).The data illustrate that the realization of high-crystalline Cu film is dependent not only on the crystallinity of underlying substrate,but also on the symmetric match of crystallographic geometry between metal film and substrate.We also systematically investigated the effects of PMMA removal on the Raman ID/IG and IG/I2D values of transferred graphene.The results reveal that different PMMA removal methods do not alter the ID/IG values;instead,the residue of PMMA increases the IG/I2D values and the thermal decomposition of PMMA leads to higher IG/I2D values than the removal of PMMA with acetone.The effects of PMMA removal on variations of the Raman spectra are also discussed. | HU BaoShan WEI ZiDong AGO Hiroki JIN Yan XIA MeiRong LUO ZhengTang PAN QingJiang LIU YunLing | 2014 | Science China Chemistry2014，57，6： | 4 |
| 17 | Influences of nozzle parameters and low-pressure on jet breakup and droplet characteristics显示文摘Experiments were carried out to investigate the influences of nozzle geometric parameters and injection pressure on jet breakup characteristics using a high-speed photography(HSP)technique.The flow rates and spraying ranges of sprinkler with different nozzles were measured.In this research,HSP technique was also used to photograph the drops emitted by sprinkler with different nozzles at different pressures,photographs were taken at different horizontal distances from the sprinkler and the equivalent circle diameter was used to represent the particle sizes.Based on HSP technology,the effects of flow velocity and nozzle geometric parameters on jet breakup length were studied,and the droplet diameters with different nozzle types were obtained.The result showed that for the sprinkler with different nozzles,the breakup length decreased with the increases of pressures.At the nearby(3-9 m)region and distant(12-18 m)region of sprinkler,the droplet diameters of sprinkler with type B nozzle were the largest,which meant the sprinkler with type B nozzle was the optimal choice by synthesizing the droplet diameter distribution.The fitting relationship of jet breakup length with Reynolds number and Weber number(Re and We),and the regression equation of the end droplet diameters were deduced with errors of less than 5%and 4%respectively. | Jiang Yue Chen Chao Li Hong Xiang Qingjiang | 2016 | International Journal of Agricultural and Biological Engineering2016，9，4： | 3 |
| 18 | Joint Subcarrier and Power Allocation for Multi-UAV Systems显示文摘This paper investigates subcarrier and power allocation in a multi-UAV OFDM system.The study considers a practical scenario,where certain subcarriers are unavailable for dynamic subcarrier allocation,on account of pre-allocation for burst transmissions.We first propose a novel iterative algorithm to jointly optimize subcarrier and power allocation,so as to maximize the sum rate of the uplink transmission in the multiUAV OFDM system.The key idea behind our solution is converting the nontrivial allocation problem into a weighted mean square error(MSE) problem.By this means,the allocation problem can be solved by the alternating optimization method.Besides,aiming at a lower-complexity solution,we propose a heuristic allocation scheme,where subcarrier allocation and transmit power allocation are separately optimized.In the heuristic scheme,closedform solution can be obtained for power allocation.Simulation results demonstrate that in the presence of stretched subcarrier resource,the proposed iterative joint optimization algorithm can significantly outperform the heuristic scheme,offering a higher sum rate. | Xin Guan Yang Huang Qingjiang Shi | 2019 | China Communications2019，16，1： | 3 |
| 19 | Gastric Electrical Stimulation Improves Outcomes of Patients With Gastroparesis for up to 10 Years显示文摘 | Richard W. McCallum Zhiyue Lin Jameson Forster Katherine Roeser Qingjiang Hou Irene Sarosiek | 2011 | Clinical Gastroenterology and Hepatology2011，，4： | 2 |
| 20 | Comparative study on constitutive relationship of as-cast Ti60 titanium alloy during hot deformation based on Arrhenius-type and artificial neural network models显示文摘 | Wenwen Peng Weidong Zeng Qingjiang Wang Hanqing Yu | 2013 | Materials and Design2013，，： | 2 |
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