Query：
学者姓名：李加庆
Refining：
Year
Type
Indexed by
Source
Complex
Co-
Language
Clean All
Abstract ：
Understanding plastic deformation behaviour is key to optimising the mechanical properties of nano-polycrystalline layered composites. This study employs the molecular dynamics (MD) simulation to comprehensively investigate the effects of various factors, such as grain sizes, strain rates, and the interlayer thicknesses of the intermetallic compounds (IMCs), on the plastic deformation behaviour of nano-polycrystalline Al/Mg layered composites. Our findings reveal that the influence of grain size on deformation behaviour is governed by the strain rate, and an increase in grain size is inversely proportional to yield stress at low strain rates, whereas it is positively proportional to tensile stress at high strain rates. Moreover, an optimal thickness of the intermediate layer contributes to enhanced composite strength, whereas an excessive thickness leads to reduced tensile strength due to the fewer grain boundaries (GBs) available for accommodating dislocations. The reinforcing impact of the intermediate IMCs layer diminishes at excessive strain rates, as the grains struggle to accommodate substantial large strains within a limited timeframe encountered at high strain rates. The insights into grain sizes, strain rates, and interlayer thicknesses obtained from this study enable the tailored development of nanocomposites with optimal mechanical characteristics.
Keyword ：
Al/Mg layered composites Al/Mg layered composites intermetallic compounds intermetallic compounds molecular dynamics simulation molecular dynamics simulation plastic deformation mechanism plastic deformation mechanism
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Li, Zhou , Shen, Tong , Hu, Xiao et al. The Plastic Deformation Mechanism in Nano-Polycrystalline Al/Mg Layered Composites: A Molecular Dynamics Study [J]. | NANOMATERIALS , 2024 , 14 (1) . |
| MLA | Li, Zhou et al. "The Plastic Deformation Mechanism in Nano-Polycrystalline Al/Mg Layered Composites: A Molecular Dynamics Study" . | NANOMATERIALS 14 . 1 (2024) . |
| APA | Li, Zhou , Shen, Tong , Hu, Xiao , Zhang, Lu , Jia, Xianshi , Li, Jiaqing et al. The Plastic Deformation Mechanism in Nano-Polycrystalline Al/Mg Layered Composites: A Molecular Dynamics Study . | NANOMATERIALS , 2024 , 14 (1) . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Excessive electric field strength causes the droplets to contact but not coalesce, severely deteriorating the oil-water separation efficiency. The investigation of the non-coalescence of nonidentical droplets in oil under a DC electric field is conducted using high-speed photography. The effects of droplet volume ratio and interfacial tension ratio on the characteristics and critical parameters for droplet non-coalescence are systematically explored. The results show the critical electrocapillary number for the non-coalescence of nonidentical droplets and critical contact cone angle decreases as the volume sum increases or the interfacial tension ratio decreases, which is related to the competition between the resultant electric field force and the interfacial tension force. These results contribute to optimizing the operating parameters of the electric coalescer and improving the oil-water separation efficiency.
Keyword ：
capillary pressure difference capillary pressure difference droplet droplet electric field electric field liquid bridge liquid bridge nonidentical non-coalescence nonidentical non-coalescence
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Huang, Xin , Chen, Mindan , Huang, Yunyun et al. Non-coalescence of nonidentical droplets in oil under a DC electric field [J]. | AICHE JOURNAL , 2024 . |
| MLA | Huang, Xin et al. "Non-coalescence of nonidentical droplets in oil under a DC electric field" . | AICHE JOURNAL (2024) . |
| APA | Huang, Xin , Chen, Mindan , Huang, Yunyun , Luo, Xiaoming , Teng, Lin , Xiao, Longqiang et al. Non-coalescence of nonidentical droplets in oil under a DC electric field . | AICHE JOURNAL , 2024 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
【目的】绿氨作为氢能的优质载体，生产工艺无碳化的优势使其成为实现碳中和目标的备选能源之一，因此绿氨终端站的布局与建设对促进氢能产业链的快速发展具有重要作用，有利于推动社会能源结构的绿色转型。【方法】概述了氨的性质：氨作为高效的储能与储氢介质，具有高能量密度、易储运、终端站无碳排放、安全性高等特点，能够显著降低储氢、运氢、用氢的成本，并可提高能源安全性。分析了氨用于储氢与储能介质具有的能量密度高、安全、长时储能等优势，调研了全球多国的氨氢项目发展与贸易情况，论述了全球快速增长的绿氨产能及需求，总结了目前氨能的贸易现状与终端站建设情况；对比目前成熟的LNG接收站相关工艺技术，详细介绍了绿氨终端站的关键工艺及技术，包括终端站绿氨存储工艺系统、液氨蒸发气处理工艺系统、终端站加注及卸载工艺系统。【结果】提出绿氨终端站的安全性问题，深入剖析了终端站液氨泄漏导致的毒性、燃烧爆炸性等危害，并给出了预防及防护措施。【结论】从化肥行业到能源领域，绿氨终端站技术的研究与发展对促进绿色能源氢能的利用具有重要意义，未来绿氨终端站的数量与规模将持续增加以适应新时代的需求，同时可以考虑改造LNG接收站等大宗能源及化工品储运设施以降低成本。（图5，表3，参59）
Keyword ：
储氢载体 储氢载体 接收工艺 接收工艺 接收终端 接收终端 液氨泄漏 液氨泄漏 碳中和 碳中和 绿氢 绿氢 绿氨 绿氨 绿色能源 绿色能源
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 滕霖 , 林崴 , 尹鹏博 et al. 碳中和目标下绿氨终端站储运技术发展现状及趋势 [J]. | 油气储运 , 2024 , 43 (01) : 1-11 . |
| MLA | 滕霖 et al. "碳中和目标下绿氨终端站储运技术发展现状及趋势" . | 油气储运 43 . 01 (2024) : 1-11 . |
| APA | 滕霖 , 林崴 , 尹鹏博 , 李卫东 , 黄鑫 , 李加庆 et al. 碳中和目标下绿氨终端站储运技术发展现状及趋势 . | 油气储运 , 2024 , 43 (01) , 1-11 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
【目的】在“双碳”背景下，氨作为无碳富氢的能源载体，体积能量密度高、易液化存储，具有广阔的发展前景。然而复杂的储运环境增加了液氨储罐和管道腐蚀的风险，因此，研究复杂输送环境下液氨腐蚀问题是“氨-氢”能源基础设施制造和安全服役的关键。【方法】通过综述液氨腐蚀的研究进展，探讨了不同环境、不同材料的氨腐蚀行为和应力腐蚀开裂机制。同时，总结了相关氨腐蚀检测方法和具体防护措施，并展望了未来氨腐蚀研究的发展方向。【结果】氧气、碳氧化合物、硫化物及氯化物的混入对氨腐蚀有促进作用，而水杂质对氨腐蚀的影响具有两面性；应力能够引起液氨应力腐蚀开裂，不同材料的应力腐蚀敏感性从大到小依次为铜及其合金、高强钢、碳钢。【结论】基于国内对液氨腐蚀行为机理尚不明确、氨腐蚀防护措施有待完善等问题，提出以下建议：(1)采用实验研究、仿真模拟等方法，探究多杂质关联作用下不同材质的液氨腐蚀行为和内在腐蚀机理；(2)需结合液氨管道实际输送环境及材料失效特征，开展管线钢及焊材-液氨临界失效边界检验与腐蚀风险评价；(3)从液氨储罐及管道的设计、选材、制造、使用等多个角度，结合多种腐蚀防腐措施，形成完善的液氨储运系统腐蚀控制、防护及评价标准体系。（图5，表2，参77）
Keyword ：
应力腐蚀 应力腐蚀 液氨储运 液氨储运 环境腐蚀 环境腐蚀 腐蚀检测 腐蚀检测 防护技术 防护技术
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 李加庆 , 冯智雨 , 梁辉龙 et al. 复杂输送环境下液氨腐蚀行为及防护技术研究进展 [J]. | 油气储运 , 2024 , 43 (02) : 121-133,162 . |
| MLA | 李加庆 et al. "复杂输送环境下液氨腐蚀行为及防护技术研究进展" . | 油气储运 43 . 02 (2024) : 121-133,162 . |
| APA | 李加庆 , 冯智雨 , 梁辉龙 , 尹鹏博 , 滕霖 , 陈崇启 et al. 复杂输送环境下液氨腐蚀行为及防护技术研究进展 . | 油气储运 , 2024 , 43 (02) , 121-133,162 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
The evaporation characteristics of a sessile droplet under a direct current electric field were numerically investigated, and a numerical model was developed based on the arbitrary Lagrange-Euler method, combining the flow, heat transfer, vapour transport, and electrostatic equations. The simulations were validated to be in good agreement with previously reported experiments. The results demonstrate that the electric field can enhance the evaporation of the sessile droplet with different evaporative cooling numbers (initial electric field intensity E0 = 280 kV & sdot;m 1; 32.9% decrease in the evaporation time for water) by the following three methods: increasing the surface area of the droplet evaporation (2.6%) through the electric-field-induced deformation, improving the heat transfer efficiency between the droplet and substrate (droplet average temperature increases by 2.3 K) through the internal vortex, and by enhancing the shearing effect on the vapour layer (450.3% increase in vapour diffusion distance dc) through the external vortex. Additionally, the evaporation of a sessile water droplet undergoing thermocapillary convection is further enhanced under the electric field (E0 = 280 kV & sdot;m 1; 20.0% decrease in the evaporation time). As the inhomogeneous temperature distribution inside the droplet was eliminated by thermocapillary convection, the evaporation efficiency was dominated by the increased surface area of the droplet evaporation and the enhanced shearing effect on the vapour layer. These results will provide a better understanding of the electro-hydrodynamic enhanced droplet evaporation.
Keyword ：
ALE ALE Droplet deformation Droplet deformation Droplet evaporation Droplet evaporation Electric field Electric field Numerical simulation Numerical simulation
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Wang, Weifeng , Huang, Xin , Wang, Liangxu et al. Study on the mechanism of sessile droplets evaporation enhanced by the electric field [J]. | CHEMICAL ENGINEERING SCIENCE , 2024 , 288 . |
| MLA | Wang, Weifeng et al. "Study on the mechanism of sessile droplets evaporation enhanced by the electric field" . | CHEMICAL ENGINEERING SCIENCE 288 (2024) . |
| APA | Wang, Weifeng , Huang, Xin , Wang, Liangxu , Teng, Lin , Luo, Xiaoming , Li, Weidong et al. Study on the mechanism of sessile droplets evaporation enhanced by the electric field . | CHEMICAL ENGINEERING SCIENCE , 2024 , 288 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
采用成品油管道顺序输送甲醇不仅可以拓展甲醇运输方式、降低运输成本，还能够提升管道运力、缓解现有成品油管道低输量难题，但目前成品油管道顺序输送甲醇工艺相关研究鲜有报道，技术的推广和应用受限。针对顺序输送过程中的混油问题，结合ALE(Arbitrary LagrangianEulerian)方法、流体控制方程以及物质传递方程，建立了甲醇和汽油顺序输送混油模型，分析了输送次序和管道流速对甲醇和汽油顺序输送过程中混油长度和混油浓度演化的影响规律。研究表明，该模型模拟的混油长度略短于VOF（流体体积）方法，在实际顺序输送过程中选择甲醇前行汽油后行的输送次序，能够有效缩短混油长度。研究结论可为成品油管道顺序输送甲醇工艺提供理论指导。
Keyword ：
ALE方法 ALE方法 数值模拟 数值模拟 混油扩散 混油扩散 甲醇输送 甲醇输送
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 黄鑫 , 施鸿翔 , 王良旭 et al. 水平管道中甲醇和汽油顺序输送过程混油规律研究 [J]. | 油气与新能源 , 2024 , 36 (04) : 57-66 . |
| MLA | 黄鑫 et al. "水平管道中甲醇和汽油顺序输送过程混油规律研究" . | 油气与新能源 36 . 04 (2024) : 57-66 . |
| APA | 黄鑫 , 施鸿翔 , 王良旭 , 李卫东 , 李加庆 , 尹鹏博 et al. 水平管道中甲醇和汽油顺序输送过程混油规律研究 . | 油气与新能源 , 2024 , 36 (04) , 57-66 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
由于氨的高能量密度和零碳特性,其作为氢能和可再生能源载体具有良好的未来市场.氨比氢更易储运且本质安全性强,有望成为推动能源革命、社会进步和国家发展的零碳能源发展路线之一.本文从氨能的全产业链角度出发,介绍了合成氨产业发展趋势以及各类合成氨技术的最新进展和成本经济性;列举了目前氨的主要储运方式、效率、成本和安全性特征;综述了氨的新能源燃料应用,包括氨燃料电池、氨内燃机、氨燃气轮机等技术体系发展现状和燃料成本经济性,以及氨分解制氢效率和生产成本优势.通过上述技术和经济性分析,探讨了氨能在能源系统中的重要作用,进一步梳理了氨能技术发展方向.
Keyword ：
新能源氨应用 新能源氨应用 氨储运 氨储运 氨合成 氨合成 氨氢能源 氨氢能源 经济性 经济性
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 李卫东 , 李逸龙 , 滕霖 et al. "双碳"目标下的氨能技术与经济性研究进展 [J]. | 化工进展 , 2023 , 42 (12) : 6226-6238 . |
| MLA | 李卫东 et al. ""双碳"目标下的氨能技术与经济性研究进展" . | 化工进展 42 . 12 (2023) : 6226-6238 . |
| APA | 李卫东 , 李逸龙 , 滕霖 , 尹鹏博 , 黄鑫 , 李加庆 et al. "双碳"目标下的氨能技术与经济性研究进展 . | 化工进展 , 2023 , 42 (12) , 6226-6238 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
针对氢能源管道储运过程中的氢脆问题，设计电化学充氢条件下的X80管线钢临氢行为综合测试试验，实测温度对管线钢氢脆敏感性的影响。结果表明：氢扩散系数和钢内壁氢浓度随着温度的升高而增加；315 K下X80管线钢的断后伸长率及断面收缩率最小，氢脆指数最高；试样断口形貌呈脆性断裂特征。分子动力学模拟结果进一步表明，315 K下裂纹尖端的位错和孪晶释放极少，因此诱发了脆性扩展行为。
Keyword ：
分子动力学模拟 分子动力学模拟 慢应变速率拉伸 慢应变速率拉伸 氢渗透 氢渗透 氢脆敏感性 氢脆敏感性 电化学充氢 电化学充氢
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 李加庆 , 吴子悦 , 朱礼洁 et al. 不同温度下管线钢氢脆的多尺度综合试验研究 [J]. | 实验室研究与探索 , 2023 , 42 (10) : 10-14 . |
| MLA | 李加庆 et al. "不同温度下管线钢氢脆的多尺度综合试验研究" . | 实验室研究与探索 42 . 10 (2023) : 10-14 . |
| APA | 李加庆 , 吴子悦 , 朱礼洁 , 滕霖 , 尹鹏博 , 张朱武 . 不同温度下管线钢氢脆的多尺度综合试验研究 . | 实验室研究与探索 , 2023 , 42 (10) , 10-14 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
This study explores the phenomenon of slip transmission across grain boundaries in coarse-grained copper. The associated effects on the deformation gradient are also investigated, using both experiment and simulation. An in-situ tensile test of a fully annealed copper specimen was conducted first using a scanning electron microscope (SEM). The deformation gradient and geometrically necessary dislocation (GND) maps at selected tensile strain values were obtained and characterized by electron backscatter diffraction (EBSD). In addition, a physically based strain gradient crystal plasticity finite element method model has been developed to simulate the early stage of tensile deformation behaviour of copper. In this model, slip transmission across the grain boundary is either allowed or blocked, depending on the alignment of adjacent grains. Slip transmission is allowed at grain boundaries between suitably aligned grains according to the Luster-Morris factor, residual Burgers vector is applied to consider the slip misalignment at GB region, and dislocation accumulation at grain boundaries is included following the Kocks-Mecking law. It was found that dislocation pile-up, lattice rotation and stress concentration were much higher near the impenetrable grain boundaries than at the penetrable ones. Due to the slip transmissions across grain boundaries, the stress and strain concentrations can be partially relaxed, and the slip transmission induced relaxation is associated with the number of active slip systems and shear strain on the best aligned slip systems. This study provides an effective strategy to investigate the early stage of plastic deformation, and a good agreement between experimental observations and simulation results has been achieved.
Keyword ：
Copper polycrystals Copper polycrystals Deformation heterogeneity Deformation heterogeneity Finite element simulation Finite element simulation Grain boundary Grain boundary Slip transmission Slip transmission Strain gradient crystal plasticity Strain gradient crystal plasticity
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Wang, Rui , Lu, Cheng , Zhang, Che et al. An investigation of slip transmission during uniaxial tensile deformation of a coarse-grained copper via EBSD characterization and crystal plasticity modelling [J]. | COMPUTATIONAL MATERIALS SCIENCE , 2023 , 226 . |
| MLA | Wang, Rui et al. "An investigation of slip transmission during uniaxial tensile deformation of a coarse-grained copper via EBSD characterization and crystal plasticity modelling" . | COMPUTATIONAL MATERIALS SCIENCE 226 (2023) . |
| APA | Wang, Rui , Lu, Cheng , Zhang, Che , Godbole, Ajit , Davis, Bradley , Li, Jiaqing et al. An investigation of slip transmission during uniaxial tensile deformation of a coarse-grained copper via EBSD characterization and crystal plasticity modelling . | COMPUTATIONAL MATERIALS SCIENCE , 2023 , 226 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
The influence of temperature on hydrogen diffusion and hydrogen embrittlement of X80 steel was studied using electrochemical hydrogen charging. The hydrogen diffusion and subsurface hydrogen concentration in the steel increased with increasing the temperature. Macro slow strain rate tensile tests and microstructural analysis were performed to unveil the dependence of hydrogen-induced embrittlement susceptibility on temperature, which suggested a temperature threshold THE, max of 315 K. The demonstration of THE, max would be crucial for determining test temperatures of hydrogen-related engineering material applications.
Keyword ：
Electrochemical hydrogen charging Electrochemical hydrogen charging Embrittlement susceptibility Embrittlement susceptibility Hydrogen embrittlement Hydrogen embrittlement Hydrogen permeation Hydrogen permeation Temperature effect Temperature effect
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Li, Jiaqing , Wu, Ziyue , Zhu, Lijie et al. Investigations of temperature effects on hydrogen diffusion and hydrogen embrittlement of X80 pipeline steel under electrochemical hydrogen charging environment [J]. | CORROSION SCIENCE , 2023 , 223 . |
| MLA | Li, Jiaqing et al. "Investigations of temperature effects on hydrogen diffusion and hydrogen embrittlement of X80 pipeline steel under electrochemical hydrogen charging environment" . | CORROSION SCIENCE 223 (2023) . |
| APA | Li, Jiaqing , Wu, Ziyue , Zhu, Lijie , Zhang, Zhuwu , Teng, Lin , Zhang, Liang et al. Investigations of temperature effects on hydrogen diffusion and hydrogen embrittlement of X80 pipeline steel under electrochemical hydrogen charging environment . | CORROSION SCIENCE , 2023 , 223 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Export
| Results： |
Selected to |
| Format： |
