检索结果-南通市图书馆

Rolling texture development in a dual-phase Mg-Li alloy:The role of temperature

在线全文

学校读者我要写书评

暂无评论

Journal of Magnesium and Alloys 2023年第8期11卷 2980-2990页

作者： Xiaoyan Li Fei Guo Yanlong Ma Luyao Jiang hongliang lai Haiding Liu Dingfei Zhang Risheng Pei College of Materials Science and Engineering Chongqing University of TechnologyChongqing 400054China Chongqing Materials Research Institute Co. LtdChongqing 400707China College of Materials Science and Engineering Chongqing UniversityChongqing 400044China Institut für Metallkunde und Metallphysik RWTH Aachen UniversityAachen 52056Germany

Dual-phase Mg-Li alloys sheets were rolled at four different temperatures ranging from liquid nitrogen to 300℃to explore effect of rolling temperature on texture and mechanical properties of the *** plasticity simulation was utilized to illustrate the influence of slip activity on rolling texture *** results show that the rolling texture is largely depended on deformation *** commercial Mg alloys,the critical resolved shear stress of basal slip inα-Mg phase of Mg-Li alloy decreased more significantly by increasing temperature compared to that of pyramidal*** of basal slip by increasing temperature triggered a decrease of split angle of basal poles for the double-peak ***slip largely enhanced by increasing temperature upon 200℃,which induced a wider orientation spread along the transverse *** theβ-Li phase,the promotion of{110}slip system at elevated temperature triggered the enhancement of{211}and{111}texture *** cryo-rolled sample exhibited the highest strength compared to the others due to a strong hardening behavior at this temperature.A two-stage hardening behavior was observed in these as-rolled dual-phase *** transition at phase boundaries could be the reason for appearance of this two-stage hardening.

关键词： Magnesium-Lithium alloys Dual-phase Texture Slip behavior Mechanical properties

在线全文

学校读者我要写书评

暂无评论

纳米压痕法表征镁合金固溶强化行为

重庆理工大学学报（自然科学） 2020年第9期34卷 141-146页

作者：郭非祝寒张震赖红良席国强麻彦龙重庆理工大学材料科学与工程学院重庆400054

利用纳米压痕实验及反演算方法研究Zn元素、Gd元素对固溶镁合金力学性能的影响。结果显示:添加Zn、Gd元素均能提升镁合金弹性模量及弹性极限,Gd元素对合金力学行为的强化效果更为明显,Zn、Gd混合添加能更有效地提升合金中的固溶强化效... 详细信息

利用纳米压痕实验及反演算方法研究Zn元素、Gd元素对固溶镁合金力学性能的影响。结果显示:添加Zn、Gd元素均能提升镁合金弹性模量及弹性极限,Gd元素对合金力学行为的强化效果更为明显,Zn、Gd混合添加能更有效地提升合金中的固溶强化效果。同时,所用的反演算法能较好地利用纳米压痕测试结果获得以滑移为主的镁合金弹塑性力学本构,所获本构方程反映的力学性能与镁合金单向压缩结果吻合,反演算结果印证了镁合金固溶强化机理。因此,纳米压痕反演算法是一种可行的镁合金力学本构计算方法。

关键词：镁合金纳米压痕反演算法固溶强化

在线全文

学校读者我要写书评

暂无评论

铅山县稼轩乡岩前村娘娘山滑坡稳定性浅析

山西建筑 2017年第25期43卷 91-92页

作者：张云涛赖洪亮曾银生江西省核工业地质局二六六大队江西南昌330038

通过对铅山县稼轩乡岩前村娘娘山滑坡地质勘查,对娘娘山滑坡现象应用有效方法——刚体极限平衡法的传递系数法进行定量分析,在分析的基础上计算其稳定性与剩余下滑推力,为评价该滑坡的稳定性及防治措施提供了可靠的参数。

关键词：滑坡剩余下滑力稳定性系数稳定性评价

Fretting wear behavior of Zr alloy cladding tube mated with Zr alloy dimple under mixed fretting regime in simulated primary water of PWR

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2023年第27期158卷 43-52页

作者： Yusheng Zhang hongliang Ming Jiang lai Lixia Gao Jianqiu Wang En-Hou Han CAS Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Nuclear Power Institute of China Chengdu 610213China

The fretting wear behavior of Zr alloy cladding tube under mixed fretting regime in a high-temperature pressurized water was *** main wear mechanism is adhesive wear,with characters of small-scale delamination at the center of worn area and serious delamination on the worn edge.A long crack throughout the worn area and other cracks propagated towards the substrate are *** cross-sectional microstructure of worn area can be divided into a thick third-body layer,thin inner oxide layer and thick tribologically transformed structure layer,and their formation mechanisms are analyzed in ***,the mixed fretting regime process and the microstructural evolution during fretting wear are discussed.

关键词： Fretting wear Mixed fretting regime Zr alloy tube High temperature pressurized water Microstructure

Effect of Normal Force on Fretting Wear Behavior of Zirconium Alloy Tube in Simulated Primary Water of PWR

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 2023年第5期36卷 865-880页

作者： Yusheng Zhang Jiang lai hongliang Ming Lixia Gao Jianqiu Wang En-Hou Han School of Materials Science and Engineering University of Science and Technology of ChinaShenyang110016China CAS Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang110016China Nuclear Power Institute of China Chengdu610213China

The effect of normal force on fretting wear behavior of zirconium alloy tube mated with grid dimple in simulated primary water of pressurized water reactor nuclear power plant was *** showed that the maximum wear depth,wear volume and wear coefficient of Zr alloy tube in simulated primary water at 315℃ gradually increased with increasing normal force,while the friction coefficient gradually *** process could be divided into four stages according to the variation of friction coefficient during *** normal force exceeds 30 N,the fretting regime would transition from gross slip regime to partial slip regime after 3×10^(7 )*** was aggravated with increasing normal force,while abrasive wear became slighter.A thicker third-body layer with monoclinic ZrO_(2) was formed by the tribo-sintering mechanism under higher normal *** addition,the schematic evolution processes of delamination and third-body layer formation were displayed according to morphology observation.

关键词： Zirconium alloy tube Fretting wear Grid-to-rod High-temperature pressurized water Normal force

Superior Latent Heat Eutectic Salt Na_(2)CO_(3)-Li_(2)CO_(3)-LiF for Thermal Energy Storage:Preparation and Performance Investigation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Thermal Science 2024年第2期33卷 501-508页

作者： LI Weiwei MIAO Qi ZHANG Yelong DING hongliang YANG Sa lai Yuan FENG Daili DING Yulong JIN Yi TAN Linghua School of Chemistry and Chemical Engineering Nanjing University of Science&TechnologyNanjing210094China National Special Superfine Powder Engineering Research Center Nanjing University of Science and TechnologyNanjing210094China Nanjing Jinhe Energy Material Co. LtdNanjing210047China School of Chemical Engineering University of BirminghamBirminghamB152TTUK School of Energy&Environmental Engineering University of Science and Technology BeijingBeijing100083China

In this paper,a novel ternary eutectic salt Na_(2)CO_(3)-Li_(2)CO_(3)-LiF was designed and investigated for concentrated solar power(CSP).The FactSage software was used to predict the composition and eutectic point of Na_(2)CO_(3)-Li_(2)CO_(3)-*** microstructure,thermophysical properties,and thermal stability of eutectic salts were experimentally measured using various analytical *** a mass ratio of 57%:32%:11%,the eutectic salt exhibited excellent thermal storage properties with a fusion enthalpy of 413 J/g and a melting point of 426.8℃.The excellent thermal stability of the eutectic salt was reflected by a weight loss of only 0.8% at 600℃.

关键词： phase change materials ternary eutectic salt latent heat thermal stability

Long-Term Variation of Global GEOV2 and MODIS Leaf Area Index (lai) and Their Uncertainties: An Insight into the Product Stabilities

在线全文

学校读者我要写书评

暂无评论

Journal of Remote Sensing 2021年第1期2021卷 302-318页

作者： hongliang Fang Yao Wang Yinghui Zhang Sijia Li LREIS Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China

Leaf area index(lai)is an essential climate variable that is crucial to understand the global vegetation ***-term satellite lai products have been applied in many global vegetation change ***,these lai products contain various uncertainties that are not been fully considered in current *** objective of this study is to explore the uncertainties in the global lai products and the uncertainty *** global lai datasets—the European Geoland2 Version 2(GEOV2)and Moderate Resolution Imaging Spectroradiometer(MODIS)(2003-2019)—were *** qualitative quality flags(QQFs)and quantitative quality indicators(QQIs)embedded in the product quality layers were analyzed to identify the temporal anomalies in the quality *** results show that the global GEOV2(0.042/10a)and MODIS(0.034/10a)lai values have steadly increased from 2003 to *** global lai uncertainty(0.016/10a)and relative uncertainty(0.3%/10a)from GEOV2 have also increased gradually,especially during the growing season from April to *** uncertainty increase is larger for woody biomes than for herbaceous ***,the MODIS lai product uncertainty remained stable over the study *** uncertainty increase indicated by GEOV2 is partly attributed to the sensor shift in the product *** algorithm enhancement is necessary to improve the cross-sensor *** study highlights the importance of studying the lai uncertainty and the uncertainty *** variations in the lai products and the product quality revealed herein have significant implications on global vegetation change studies.

关键词： uncertainty qualitative season

Tail loss affects fecundity but not offspring traits in the Chinese skink Eumeces chinensis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Current Zoology 2012年第2期58卷 228-235页

作者： hongliang LU Jianfang GAO Xiaohao MA Zhihua LIN Xiang JI Hangzhou Key Laboratory for Animal Adaptation and Evolution School of Life and Environmental Sciences Hangzhou Normal University Hangzhou Zhejiang 310036 China School of Ecology Lishui University Lishui Zhejiang 323000 China Jiangsu Key Laboratory for Biodiversity and Biotechnology College of Life Sciences Nanjing Normal University Nanjing Jiangsu 210046 China

We used the Chinese skink Eumeces chinensis as a model animal to study the effects of tail loss on reproductive in- vestment and offspring traits. A total of 147 wild-captured adult females were divided into four groups according to their tail con- ditions. Tail breaks occurred most frequently in the proximal portion of the tail and least frequently in the distal portion, with the middle portion in between. This finding suggests that tail breaks occurring in nature often entails substantial energetic costs in E. chinensis where the tail is a major site of energy storage. The proportion of females that laid eggs was higher in females with in- tact or completely regenerated tails than in those with broken tails. Following whole-tail autotomy, the clutch size was reduced by 17%, and the clutch mass was reduced by 14%. Females undergoing substantial tail autotomy reduced reproductive investment, and they did so by reducing the number but not the size of eggs produced. None of the egg and hatchling traits was affected by tail loss. Comparing our data with those reported for other oviparous and viviparous skinks allows us to draw two general conclu- sions： one is that fecundity （clutch or litter size） is affected by tail loss in all species so far studied, whereas offspring size is af- fected by tail loss in some species, but not in others; the other is that the reduction in fecundity following tail loss is more evident in species lacking abdominal fat bodies

关键词： Scincid lizard Costs of tail autotomy Fecundity Offspring size Morphology Locomotor performance

A Bibliometric Visualization Review of the MODIS lai/FPAR Products from 1995 to 2020

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Remote Sensing 2021年第1期2021卷 74-93页

作者： Kai Yan Dongxiao Zou Guangjian Yan hongliang Fang Marie Weiss Miina Rautiainen Yuri Knyazikhin Ranga B.Myneni School of Land Science and Techniques China University of GeosciencesChina State Key Laboratory of Remote Sensing Science Jointly Sponsored by Chinese Academy of Sciences and Beijing Normal UniversityChina Department of Earth and Environment Boston UniversityUSA LREIS Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesChina INRAE Avignon UniversitéUMR 1114 EMMAHUMT CAPTEF-84000 AvignonFrance Department of Built Environment School of EngineeringAalto UniversityFinland Department of Electronics and Nanoengineering School of Electrical EngineeringAalto UniversityFinland

The MODIS lai/FPAR products have been widely used in various fields since their first public release in *** review intends to summarize the history,development trends,scientific collaborations,disciplines involved,and research hotspots of these *** aim is to intrigue researchers and stimulate new research *** on literature data from the Web of Science(WOS)and associated funding information,we conducted a bibliometric visualization review of the MODIS lai/FPAR products from 1995 to 2020 using bibliometric and social network analysis(SNA)*** drew the following conclusions:(1)research based on the MODIS lai/FPAR shows an upward trend with a multiyear average growth rate of 24.9%in the number of publications.(2)Researchers from China and the USA are the backbone of this research area,among which the Chinese Academy of Sciences(CAS)is the core research institution.(3)Research based on the MODIS lai/FPAR covers a wide range of disciplines but mainly focus on environmental science and ecology.(4)Ecology,crop production estimation,algorithm improvement,and validation are the hotspots of these studies.(5)Broadening the research field,improving the algorithms,and overcoming existing difficulties in heterogeneous surface,scale effects,and complex terrains will be the trend of future *** work provides a clear view of the development of the MODIS lai/FPAR products and valuable information for scholars to broaden their research fields.

关键词： FPAR backbone estimation