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NUMERICAL sIMULATION OF CONTROLLING IN TITANIUM ALLOY sHEETs WELDING REsIDUAL sTREss BY TRAILING PEENING

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Acta Metallurgica sinica(English Letters) 2004年第3期17卷 311-316页

作者： x.s.liu H.Y.Fang W.L.xu Z.B.Dong D.Y.Yu state Key Laboratory of Advanced Welding Production Technology Harbin Institute of Technology Harbin 150001 China

It is a promising and new technology to apply welding with trailing peening to control welding stress and distortion of titanium *** simulation of conventional welding and welding with trailing peening of the titanium alloy sheet is carried out,using nonlinear finite element theory and the engineering analysis software *** result shows that welding with trailing peening technology reduces longitudinal residual stress in welding joint effectively,and it is more effective to reduce residual stress to peen the weld than to peen the weld *** is a effective result that other technology and method used in welding can never achieved.

关键词： numerical simulation residual stress and distortion welding with trailing peening titanium alloy

Double heterogeneous structures induced excellent strength-ductility synergy in Ni_(40)Co_(30)Cr_(20)Al_(5)Ti_(5) medium-entropy alloy

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Journal of Materials science & Technology 2024年第14期181卷 176-188页

作者： A.x.Li x.s.liu R.Li s.B.Yu M.H.Jiang J.s.Zhang C.N.Che D.Huang P.F.Yu G.Li state Key Laboratory of Metastable Materials science and Technology Yanshan UniversityQinhuangdao 066004China

The application of single-phase face-centered cubic(FCC)medium entropy alloys(MEAs)in the engi-neering industry is often hindered by the challenge of insufficient *** this study,a novel non-equiatomic ratio Ni_(40)Co_(30)Cr_(20)Al_(5)Ti_(5)MEA was successfully *** the well-designed mechan-ical heat treatment processing,we introduced a heterogeneous grain structure comprising 67.4%fine grain and 32.6%coarse ***,heterogeneous size L12 phases consisting of 18.7%submicron precip-itates and 11.7%nano-sized precipitates,were incorporated into the *** tests conducted at room temperature revealed that the double heterogeneous structure alloy demonstrated remarkable strength–ductility *** exhibited a yield strength of 1200 MPa,an ultimate tensile strength of 1560 MPa and a total elongation of 33.6%.The exceptional strength of the alloy can be primarily attributed to heteroge-neous deformation induced strengthening,grain boundary strengthening and precipitation *** excellent ductility is mainly attributed to the high-density stacking faults and Lomer–Cottrell *** study not only contributes to the clarification of the strengthening and deformation mechanism of double heterogeneous structure alloys but also provides an effective strategy for the development of high-performance alloys with high strength and ductility.

关键词： Medium entropy alloy Double heterogeneous structure HDI strengthening Remarkable tensile properties

Excellent strength-ductility combination in Co_(36)Cr_(15)Fe_(18)Ni_(18)Al_(8)Ti_(4)Mo_(1)multi-principal element alloys by dual-morphology B2 precipitates strengthening

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Journal of Materials science & Technology 2023年第3期134卷 60-66页

作者： x.s.liu R.Li x.F.Fan Q.Q.liu x.Tong A.x.Li s.xu H.Yang s.B.Yu M.H.Jiang C.Huo P.F.Yu M.T.Dove G.Li state Key Laboratory of Metastable Materials science and Technology Yanshan UniversityQinhuangdao 066004China College of Computer science Sichuan UniversityChengdu 610065China school of Physical and Chemical sciences Queen Mary University of LondonMile End RoadLondon E14NSUnited Kingdom school of Mechanical Engineering Dongguan University of TechnologyDongguan 523808China

Precipitation strengthening provides one of the most widely-used mechanisms for strengthen-ing multi-principal-element alloys(MPEAs).Here,we report dual-morphology B2 precipitates in Co_(36)Cr_(15)Fe_(18)Ni_(18)Al_(8)Ti_(4)Mo_(1)MPEA obtained by thermo-mechanical *** microscopy charac-terization reveals that the dual-morphology B2 precipitates are either recrystallized B2 particles formed at the grain boundaries or triple junctions with recrystallization process,or rod-like within the non-recrystallized FCC *** dual-morphology B2 precipitates enhance the yield strength and ultimate tensile strength up to 1120 MPa and 1480 MPa,*** work suggests the mechanical proper-ties of the alloy can be optimized by B2 precipitation strengthening to meet the needs of engineering applications.

关键词： Multi-principal element alloys B2 precipitates Heterogeneous nucleation Precipitation strengthening

应用影像组学方法预测肝内胆管细胞癌淋巴结转移和临床预后

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国际医学放射学杂志 2019年第5期 623-623页

作者： G.W.Ji F.P.Zhu Y.D.Zhang x.s.liu F.Y.Wu K.Wang 边晔 Hepatobiliary Center The First Affiliated Hospital of Nanjing Medical University

摘要目的本研究旨在建立和验证用于预测肝内胆管细胞癌(IHC)淋巴结(LN)转移的影像组学模型,并确定其预后价值。方法本回顾性研究在103例接受根治性切除和淋

关键词：肝内胆管细胞癌影像组学淋巴结转移临床预后

肾细胞癌肺转移抗血管生成靶向治疗的疗效评估:R2~*值作为预测标志物

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国际医学放射学杂志 2017年第6期 730-730页

作者： G.Y.Wu G.Q.liu W.Kong J.x.Qu s.T.suo x.s.liu 张毓婧 Department of Radiology Renji Hospital School of Medicine Shanghai Jiao Tong University

摘要目的探究R~*mapping用于评估肺转移性肾细胞癌(m RCC)抗血管生成靶向治疗(a ATT)的效能和最佳时间点。方法试验组和验证组分别有22例和16例病人。MR R~*

关键词：抗血管生成靶向治疗 R2 疗效评估

solution‑Processed Thin Film Transparent Photovoltaics:Present Challenges and Future Development

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Nano-Micro Letters 2025年第2期17卷 566-600页

作者： Tianle liu Munerah M.s.Almutairi Jie Ma Aisling stewart Zhaohui xing Mengxia liu Bo Hou Yuljae Cho UM-sJTU Joint Institute Shanghai Jiao Tong UniversityShanghai 200240People’s Republic of China school of Physics and Astronomy Cardiff UniversityCardiff CF243AAWalesUK Department of Electrical and Computer Engineering Yale UniversityNew HavenCT 06511USA Energy sciences Institute Yale UniversityWest HavenCT 06516USA Future Photovoltaics Research Center Global Institute of Future TechnologyShanghai Jiao Tong UniversityShanghai 200240People’s Republic of China

Electrical energy is essential for modern society to sustain economic *** soaring demand for the electrical energy,together with an awareness of the environmental impact of fossil fuels,has been driving a shift towards the utilization of solar ***,traditional solar energy solutions often require extensive spaces for a panel installation,limiting their practicality in a dense urban *** overcome the spatial constraint,researchers have developed transparent photovoltaics(TPV),enabling windows and facades in vehicles and buildings to generate electric *** TPV advancements are focused on improving both transparency and power output to rival commercially available silicon solar *** this review,we first briefly introduce wavelength-and non-wavelengthselective strategies to achieve *** of merit and theoretical limits of TPVs are discussed to comprehensively understand the status of current TPV *** we highlight recent progress in different types of TPVs,with a particular focus on solution-processed thin-film photovoltaics(PVs),including colloidal quantum dot PVs,metal halide perovskite PVs and organic *** applications of TPVs are also reviewed,with emphasis on agrivoltaics,smart windows and ***,current challenges and future opportunities in TPV research are pointed out.

关键词： Transparent semiconductors solution-processable transparent solar cell Emerging solar cell materials Buildingintegrated photovoltaics

Rational modulation of fluorophosphate cathode by anionic groups to reduce the polarization behavior for fast-charging sodium-ion batteries

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Journal of Energy Chemistry 2025年第1期100卷 509-521页

作者： xinyuan Wang Fan Zhang xingyu Zhou Qian Wang Changyu liu Yangyang liu Hui Wang xiaojie liu Key Laboratory of synthetic and Natural Functional Molecule of the Ministry of Education College of Chemistry & Materials Science Northwest University

Na3V2（PO4）2O2F （VP） is recognized as a promising cathode material for sodium-ion batteries due to its stable structural framework and high specific *** functional theory （DFT） and finite element simulations show that incorporating sO42-into VP decreases its band gap,lowers the migration energy barrier,and ensures a uniform Na+concentration gradient and stress distribution during charge and discharge ***,the average Na+diffusion coefficient of Na3V2（PO4）1.95（sO4）0.05O2F（VPs-1） is roughly double that of VP,leading to enhanced rate capability (80 C,75.5 mAh g-1) and cycling stability (111.0 mAh g-1capacity after 1000 cycles at 10 C current density) for ***-1 exhibits outstanding fast-charging capabilities,achieving an 80%state of charge in just 8.1 *** assembled VPs-1//sbsn/NPC full cell demonstrated stable cycling over 200 cycles at a high 5 C current,maintaining an average coulombic efficiency of 95.35%.

关键词： Anionic group modulation Polarization behavior Fast-charging sodium-ion battery Fluorophosphate Cathode

Role of the Greenland sea ice anomaly in the late-spring drought over Northwest China

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Atmospheric and Oceanic science Letters 2025年第1期18卷 1-5页

作者： Yang liu Huopo Chen Nansen-Zhu International Research Centre Institute of Atmospheric Physics Chinese Academy of SciencesBeijingChina Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University for Information Science and TechnologyNanjingChina

Drought across Northwest China in late spring has exerted a vital effect on the local climate and agricultural production,and has been alleviated during the past *** study explored the influence of the preceding Arctic sea ice on the May drought in Northwest China caused by the precipitation *** analysis indicated that when the Greenland sea ice concentration is abnormally high during February to April,the dry conditions in Northwest China tend to be *** increase of sea ice in the Greenland sea can excite a meridional circulation,which causes sea surface temperature(ssT)anomalies in the North Atlantic via the sea-air interaction,manifested as significant warm ssT anomalies over the south of Greenland and the subtropical North Atlantic,but negative ssT anomalies over the west of the *** abnormal ssT pattern maintains to May and triggers a zonal wave train from the North Atlantic through scandinavia and Central Asia to Northwest China,leading to abnormal cyclones in Northwest ***,Northwest China experiences a more humid climate than usual.

关键词： Arctic sea ice Greenland sea North Atlantic ssT Drought Northwest China

Low-cost and fluoride-free synthesis of MFI zeolite nanosheets with enhanced stability for benzene alkylation with ethanol

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Journal of Energy Chemistry 2025年第1期100卷 458-468页

作者： Peng Zhu Cun liu Yiren Yu Guoshu Gao Yumeng Zhao xiongfu Zhang Guodong liu Guohui Yang state Key Laboratory of Fine Chemicals School of Chemical Engineering Dalian University of Technology state Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences

Zeolite nanosheets with a short b-axis thickness are highly desirable in lots of catalytic reactions due to their reduced diffusion resistance. Nevertheless, conventional synthesis methods usually require expensive structure-directing agents(sDAs), pricey raw materials, and eco-unfriendly fluorine-containing additives. Here, we contributed a cost-effective and fluoride-free synthesis method for synthesizing high-quality MFI zeolite nanosheets through a silicalite-1(sil-1) seed suspension and urea cooperative strategy, only with inexpensive colloidal silica as the si source. Our approach was effective for synthesizing both sil-1 and aluminum-containing ZsM-5 nanosheets. By optimizing key synthesis parameters,including seed aging time, seed quantity, and urea concentration, we achieved precise control over the crystal face aspect ratio and b-axis thickness. We also revealed a non-classical oriented nanosheet growth mechanism, where sil-1 seeds induced the formation of quasi-ordered precursor particles, and the(010)crystal planes of these particles facilitated urea adsorption, thereby promoting c-axis-oriented *** obtained ZsM-5 nanosheets exhibited exceptional catalytic performance in the benzene alkylation with ethanol, maintaining stability for over 500 h, which is 5 times longer than traditional ZsM-5 catalysts. Furthermore, large-scale production of ZsM-5 nanosheets was successfully carried out in a 3 L highpressure autoclave, yielding samples consistent with those from laboratory-scale synthesis. This work marks a significant step forward in the sustainable and efficient production of MFI nanosheets using inexpensive and environmentally friendly raw materials, offering the broad applicability in catalysis.

关键词： MFI zeolite ZsM-5 Nanosheets scale-up synthesis Aromatic alkylation