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International Journal of Minerals,Metallurgy and Materials 2022年第9期29卷 1780-1787页

作者： Liang Lan ruyi xin xinyuan Jin Shuang Gao Bo He School of Material Engineering Shanghai University of Engineering ScienceShanghai 201620China Research Center of High-temperature Alloy Precision Forming Shanghai University of Engineering ScienceShanghai 201620China

Laser shock peening(LSP)is an attractive post-processing method to tailor surface microstructure and enhance mechanical performances of additive manufactured(AM)*** effects of multiple LSP treatments on the microstructure and mechanical properties of Ti-6Al-4V part produced by electron beam melting(EBM),as a mature AM process,were studied in this ***,surface topography,residual stress,and tensile performance of EBM-manufactured Ti-6Al-4V specimens were systematically analyzed subjected to different LSP *** distribution of porosities in EBM sample was assessed via X-ray computed *** results showed that EBM samples with two LSP treatments possessed a lower porosity value of 0.05%compared to the value of 0.08%for the untreated *** strength of EBM samples with two LSP treatments was remarkably raised by 12%as compared with the as-built *** grains ofαphase were refined in near-surface layer,and a dramatic increase in the depth and magnitude of compressive residual stress(CRS)was achieved in EBM sample with multiple LSP *** grain refinement ofαphase and CRS with larger depth were responsible for the strength enhancement of EBM samples with two LSP treatments.

关键词： additive manufacturing laser shock peening electron beam melting residual stress Ti-6Al-4V alloy mechanical properties

选区激光熔化增材制造钛合金的疲劳性能研究进展

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材料科学与工程学报 2022年第4期40卷 706-716页

作者：辛如意兰亮何博上海工程技术大学材料工程学院/高温合金精密成型研究中心上海201620

本文基于选区激光熔化(selective laser melting,SLM)增材制造Ti6Al4V钛合金构件组织与性能特点,围绕工艺参数优化、热处理、机械抛光、电化学抛光、激光抛光、表面机械研磨处理、喷丸、激光喷丸等改善疲劳性能的工艺方法,概括了SLM成形... 详细信息

本文基于选区激光熔化(selective laser melting,SLM)增材制造Ti6Al4V钛合金构件组织与性能特点,围绕工艺参数优化、热处理、机械抛光、电化学抛光、激光抛光、表面机械研磨处理、喷丸、激光喷丸等改善疲劳性能的工艺方法,概括了SLM成形Ti6Al4V钛合金疲劳性能的研究进展,并对强化SLM成形件疲劳性能的研究做出了展望。

关键词：选区激光熔化增材制造钛合金疲劳性能表面处理

增材制造Ti-6Al-4V钛合金低周疲劳性能研究进展

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材料科学与工艺 2023年第1期31卷 79-90页

作者：白澄岩兰亮辛如意蒋露露高双何博上海工程技术大学材料工程学院上海201620 上海工程技术大学高温合金精密成型研究中心上海201620

金属增材制造技术可用于大型、复杂高性能钛合金结构件的制备,在航空航天等领域具有显著的优势和巨大的发展潜力。虽然增材制造Ti-6Al-4V合金构件的强度已经能够超过锻件,但它仍存在内部孔隙、熔合不良、粗大的柱状晶及残余拉应力等问题... 详细信息

金属增材制造技术可用于大型、复杂高性能钛合金结构件的制备,在航空航天等领域具有显著的优势和巨大的发展潜力。虽然增材制造Ti-6Al-4V合金构件的强度已经能够超过锻件,但它仍存在内部孔隙、熔合不良、粗大的柱状晶及残余拉应力等问题,使其在疲劳性能上与锻件具有一定的差距。本文在介绍直接能量沉积、选区激光熔化和电子束选区熔化3种代表性增材制造技术的原理及特点的基础上,简述了3种工艺制备Ti-6Al-4V合金构件的微观组织、静态力学性能及低周疲劳性能的研究进展,重点讨论了打印方向、缺陷、显微组织和表面处理对低周疲劳性能的影响。分析了增材制造Ti-6Al-4V合金构件低周疲劳性能、拉伸性能与微观组织之间的内在关系,并对提高构件低周疲劳性能的方法和推动其广泛应用的发展方向进行展望。

关键词：增材制造钛合金低周疲劳性能微观组织疲劳失效

Plant species coexistence alleviates the impacts of lead on Zea mays L.

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Journal of Environmental Sciences 2012年第3期24卷 396-401页

作者： ruyi Yang Ling Liu Shuting Zan Jianjun Tang xin Chen College of Life Sciences Zhejiang UniversityHangzhou 310058China College of Environmental Science and Engineering Anhui Normal UniversityWuhu 241003China

Whether plant coexistence can reduce the impacts of lead （Pb） on crops in agroecosystems has not been well understood. We conducted a factorial experiment to investigate the effects of weeds coexisting with maize （Zea mays L.） on Pb accumulation in maize and soil microbes at two Pb levels （ambient and 300 mg/kg）. Elevated Pb tended to increase the Pb concentration in maize and decreased soil microbial activity （indicated by the average well color development, AWCD）, functional group diversity, as well as arbuscular mycorrhizal （AM） colonization and vesicle number of maize. Compared to the monoculture, weeds coexisting with maize reduced the Pb concentrations in the root, leaf, sheath and stem of maize at both seedling and mature stages. In maize-weed mixtures, soil microbial activity and functional group diversity tended to increase for both Pb treatments relative to the monoculture. Furthermore, principal component analysis revealed that the soil microbial community structure changed with the introduction of weeds. The highest Pb accumulation in weeds occurred for the elevated Pb treatment in a three species mixture. The results suggest that multiple plant species coexistence could reduce lead accumulation in crop plants and alleviate the negative impacts on soil microbes in polluted land, thereby highlighting the significance of plant diversity in agroecosystems.

关键词： lead plant coexistence functional group diversity Zea mays L.

Effects of metal lead on growth and mycorrhizae of an invasive plant species (Solidago canadensis L.)

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Journal of Environmental Sciences 2008年第6期20卷 739-744页

作者： YANG ruyi YU Guodong TANG Jianjun CHEN xin College of Life Sciences Zhejiang University Hangzhou 310058 China College of Environmental Sciences Anhui Normal University Wuhu 241003 China

It is less known whether and how soil metal lead （Pb） impacts the invasion of exotic plants. A greenhouse experiment was conducted to estimate the effects of lead on the growth and mycorrhizae of an invasive species （Solidago canadensis L.） in a microcosm system. Each microcosm unit was separated into HOST and TEST compartments by a replaceable mesh screen that allowed arbuscular mycorrhizal （AM） fungal hyphae rather than plant roots to grow into the TEST compartments. Three Pb levels （control, 300, and 600 mg/kg soil） were used in this study to simulate ambient soil and two pollution sites where S. canadensis grows. Mycorrhizal inoculum comprised five indigenous arbuscular mycorrhizal fungal species （ Glomus mosseae, Glomus versiform, Glomus diaphanum, Glomus geosporum, and Glomus etunicatum）. The ^15N isotope tracer was used to quantify the mycorrhizally mediated nitrogen acquisition of plants. The results showed that S. canadensis was highly dependent on mycorrhizae. The Pb additions significantly decreased biomass and arbuscular mycorrhizal colonization （root length colonized, RLC%） but did not affect spore numbers, N （including total N and ^15N） and P uptake. The facilitating efficiency of mycorrhizae on nutrient acquisition was promoted by Pb treatments. The Pb was mostly sequestered in belowground of plant （root and rhizome）. The results suggest that the high efficiency of mycorrhizae on nutrient uptake might give S. canadensis a great advantage over native species in Pb polluted soils.

关键词： Solidago canadensis L. metal lead mycorrhizae N and P uptake Pb accumulation

Interfacial challenges for all-solid-state batteries based on sulfide solid electrolytes

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Journal of Materiomics 2021年第2期7卷 209-218页

作者： Shuo Wang ruyi Fang Yutao Li Yuan Liu Chengzhou xin Felix H.Richter Ce-Wen Nan State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing100084China Materials Science and Engineering Program and Texas Materials Institute The University of Texas at AustinAustinTX78712United States Institute of Physical Chemistry&Center for Materials Research Justus-Liebig-University GiessenHeinrich-Buff-Ring 17D-35392GiessenGermany State Key Laboratory of Bio-fibers and Eco-textiles Institute of Biochemical EngineeringCollege of Materials Science and EngineeringQingdao UniversityQingdao266071China

Sulfide solid electrolytes(e.g.,lithium thiophosphates)have the highest room-temperature ionic conductivity(-10^(-2) S cm^(-1))among solid Li-ion conductors so far,and thus have attracted ever-increasing attention for high energy-density and safety all-solid-state batteries(ASSBs).However,interfacial issues between sulfide electrolytes and electrodes have been the main challenges for their applications in *** interfacial instabilities would occur due to side reactions of sulfides with electrodes,poor solid-solid contact,and lithium dendrites during charge/discharge *** this review,we analyze the interfacial issues in ASSBs based on sulfide electrolytes,and in particular,discuss strategies for solving these interfacial issues and stabilize the electrode-electrolyte ***,a perspective of the interfacial engineering for sulfide-based ASSBs is provided.

关键词： Sulfide solid electrolytes Interfacial engineering All-solid-state batteries Li-metal protection

基于孪生Inception网络的燃烧器火焰状态监测

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化工进展 2024年第2期43卷 760-767页

作者：马赟付伟王昕杨如意钱相臣华北电力大学控制与计算机工程学院北京102206 国家能源集团新能源技术研究有限公司北京102211 国电内蒙古东胜热电有限公司内蒙古鄂尔多斯017000

燃煤电厂炉膛火焰的实时监测关系到发电经济性和锅炉的安全运行,而基于光能、热能和辐射能等能量信号的传统火检技术仅能探测火焰的有无,已无法满足日益迫切的火力发电精细化“调峰”需求。本文以实际电厂燃烧器火焰图像为研究对象,应... 详细信息

燃煤电厂炉膛火焰的实时监测关系到发电经济性和锅炉的安全运行,而基于光能、热能和辐射能等能量信号的传统火检技术仅能探测火焰的有无,已无法满足日益迫切的火力发电精细化“调峰”需求。本文以实际电厂燃烧器火焰图像为研究对象,应用基于改进的Inception深度卷积神经网络(deep convolutional neural network,DCNN)的火焰状态分类方法,通过深入分析燃烧器火焰图像特点,对火焰多维度特征进行提取并制作数据集,同时将预处理后的不同类别火焰图像制作成火焰图像数据集,构建Inception DCNN,实现自动特征提取的火焰状态分类,并提出基于孪生Inception DCNN对燃烧器火焰状态进行分类。结果表明,改进的孪生Inception DCNN网络模型将火焰的状态分类问题转化为评价状态相似度问题,间接实现分类目标,识别准确率达到99.86%。

关键词：燃烧器火焰状态监测燃煤电厂 Inception深度卷积神经网络孪生网络

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Design and Availability Research of a Flammable and Explosive Volatiles Monitoring and Early Warning System (FEVMEW) for the Bus Crowded Places

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Journal of Computer and Communications 2020年第12期8卷 83-90页

作者： Cen Yu Weibin Guo ruyi Li Qiang Chen Tianping Xu Anhui xin’he Defense Equipment Technology Joint Co. Ltd. Hefei China Institute of Intelligent Machines (IIM) Hefei Institutes of Physical Science (HIPS) Chinese Academy of Sciences (CAS) He-fei China

In order to reduce the arson or accidental fire losses, we developed a gas sensitive detector used for the rapid detection and early warning of flammables in crowded places such as buses. A MEMS (Micro-Electro-Mechanical System) based thin film semiconductor was fabricated as the gas sensor. To obtain the target gas selective response, the surface of the sensitive film was modified with highly active metal catalytic nano-particles. Thus the anti-interference ability was improved and the false alarm rate was effectively reduced. Furthermore, the modular embedded system for information acquisition and transmission was developed. Supported by the Airflow Precision control system (APs), the rapid warning of volatile gas of flammable substances was realized. Experiments showed that RAs has satisfied selectivity to volatiles of usual flammable liquid, such as the output voltage reaches 3 V (0 - 3.3 V). With simulation about the actual installation state in bus, MWs sounds an alarm at 2 minutes after splashing 50 mL 92# petrol to the floor. For the last two years, FEVMEW has been integrated into more than 4000 buses in Hefei. This design has been proved feasible according to the actual operation.

关键词： Flammable and Explosive Volatiles Monitoring and Early Warning Bus Crowded Places Gas Sensitive MEMS Chip Airflow Regulating

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加拿大一枝黄花的入侵机理研究进展

生态学报 2011年第4期31卷 1185-1194页

作者：杨如意昝树婷唐建军陈欣安徽师范大学环境科学与工程学院芜湖241003 浙江大学生命科学学院农业生态与工程研究所杭州310058

我国是世界上遭受外来生物入侵最为严重的国家之一。加拿大一枝黄花(Solidago canadensis L.)是一种世界性的入侵植物,侵入我国已有70多年的历史,目前国内外对其入侵机理已有许多研究。结合近年来的研究热点和重要进展,从加拿大一枝黄... 详细信息

我国是世界上遭受外来生物入侵最为严重的国家之一。加拿大一枝黄花(Solidago canadensis L.)是一种世界性的入侵植物,侵入我国已有70多年的历史,目前国内外对其入侵机理已有许多研究。结合近年来的研究热点和重要进展,从加拿大一枝黄花的生物学特点、入侵地环境的可入侵性、化感效应以及植物与土壤的反馈作用等4个方面综述了其成功入侵的机理,分析和评价了各种机理之间的内在联系。认为生物入侵是一个涉及多个营养级的复杂生物学过程,是多种机制综合作用的结果,人类活动的干扰是入侵事件频发的深层次原因。加拿大一枝黄花强大的入侵能力、高度的抗逆性、对本地植物和土传病原菌的化感抑制、入侵地环境的脆弱性以及菌根真菌等有益微生物的协助在入侵过程中起着关键作用,但天敌释放并未使其获得更大竞争优势。

关键词：加拿大一枝黄花入侵机理化感作用植物-土壤反馈作用

Design and Availability Research of a Flammable and Explosive Volatiles Monitoring and Early Warning System（FEVMEW） for the Bus Crowded Places

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Design and Availability Research of a Flammable and Explosiv...