|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Formation and Evolution of Non-dendritic Microstructures of Semisolid Alloys Prepared by Shearing/Cooling Roll Process显示文摘砍 / 凉下来的转动(SCR ) 过程被采用准备 semi-solidA2017 合金。在半固体 A2017 合金的非树枝状的微观结构的形成和进化被学习。当熔融的合金减少 orroll 鞋洞高度的流的温度被减少,半固体营舍的微观结构从粗糙的树突转变成好 equiaxed 谷物,这被显示出。从入口,到转动鞋洞,鞋表面附近的泥浆在粗糙的树突的顺序的半固体的微观结构,堕落树突或 equiaxed 谷物,而是罚款的出口, equiaxed 谷物在转动表面附近。SCR 过程准备的半固体泥浆的 Microstructuralevolution 是熔融的合金起核心作用并且在转动和鞋的表面上第一长成树突。在砍下面并且激动人心由旋转转动给,树突压碎离开并且分散进 melt。在砍下面并且在有固体,树突手臂破裂和 formequiaxed 谷物的大量的部分的半固体泥浆上激动人心微观结构。 | Shuncheng WANG Furong CAO Renguo GUAN Jinglin WEN | 2006 | Journal of Materials Science & Technology2006，22，2： | 13 |
| 2 | Dynamical Solidification Behaviors and Metal Flow during Continuous Semisolid Extrusion Process of AZ31 Alloy显示文摘In this paper, a novel near-net-shape forming process, continuous semisolid extrusion process (CSEP) of AZ31 alloy was proposed, and the dynamical solidification behaviors and metal flow during the process were firstly investigated. During casting AZ31 alloy by this process, non-uniform microstructure distributions and non-equilibrium solidification region near the roll surface were found in the roll-shoe gap. Microstructural evolution from dendrite to rosette and spherical grains was observed during the casting by CSEP. Casting temperature, roll-shoe gap width and cooling ability have great effect on casting process and metal flow, so these factors should be carefully controlled, a proper casting temperature of 710-750℃ is suggested. The white α phases were strongly stretched during the processing, and the remnant liquids are correspondingly distributes along the solid phase boundaries and also show stripped lines. | Renguo Cuan Liqing Chen Jiangping Li Fuxing Wang | 2009 | Journal of Materials Science & Technology2009，25，3： | 10 |
| 3 | A high-strength,ductile Al-0.35Sc-0.2Zr alloy with good electrical conductivity strengthened by coherent nanosized-precipitates显示文摘Ductility and electrical conductivity of metallic materials are inversely correlated with their strength,resulting in a difficulty of optimizing all three simultaneously. We design an Al-Sc-Zr-based alloy using semisolid extrusion to yield a good trade-off between strength and ductility along with excellent electrical conductivity. The Al-0.35Sc-0.2Zr wire with a diameter of 3 mm exhibited the best combined properties: a tensile strength of 210 ± 2 MPa, elongation of 7.6% ± 0.5%, and an electrical conductivity of 34.9 ± 0.05 MS/m. The average particle size of nanosized Al_3(Sc, Zr) precipitates increased from 6.5 ± 0.5 nm to 25.0 ± 0.5 nm as the aging time increased from 1 h to 96 h at 380 °C, accompanied by the corresponding volume fraction variation from(6.2 ± 0.1) × 10^(-4) to(3.7 ± 0.1) × 10^(-3). As proved by transmission electron microscopy observation, the high strength originates from the effective blockage of dislocation motion by numerous nanosized Al_3(Sc, Zr) precipitates whilst both electrical conductivity and ductility remain at a high level due to the coherent precipitates possessing an extremely low electrical resistivity. | Renguo Guan Yongfeng Shen Zhanyong Zhao Xiang Wang | 2017 | Journal of Materials Science & Technology2017，33，3： | 9 |
| 4 | Non-injection gram-scale synthesis of cesium lead halide perovskite quantum dots with controllable size and composition显示文摘金属卤化物 perovskites 是为太阳的收获和轻射出应用被认为候选人好的新奇 optoelectronic 材料。在这研究,我们为综合开发一条可再现、便宜的途径 highquality 铯铅卤化物 perovskite (CsPbX 3, X = Cl, Br,并且我或 Cl/Br 和 I/Br ) 由在空中的在 octadecene 的先锋的直接加热的 nanocrystals (NC ) 。试验性的结果证明同样准备的 CsPbX 3 nanocrystals 的粒子尺寸和作文能被反应温度的一个简单变化成功地调节。同样准备的 nanocrystals 的排放山峰位置能方便地从 UV 被调节到 NIR (360-700 nm ) 区域,和同样获得的样品(绿、红的排出物) 的量收益罐头活动范围直到 87% 。结构和同样获得的 NC 的化学作文被传播电子显微镜学, X 光检查衍射,和元素的分析描绘。这建议合成线路能与一个批反应产出大量高质量的 NC,并且能为基于 perovskite 的轻射出、光电的太阳能电池的进一步的应用程序铺平道路,通常在克规模上。 | Xu Chen Lucheng Peng Keke Huang Zhan Shi Renguo Xie Wensheng Yang | 2016 | Nano Research2016，9，7： | 8 |
| 5 | Large-scale synthesis of single-source, thermally stable, and dual-emissive Mn-doped Zn-Cu-ln-S nanocrystals for bright white light-emitting diodes显示文摘 | Lucheng Peng Dongze Li Zhuolei Zhang Keke Huang Ying Zhang Zhan Shi Renguo Xie Wensheng Yang | 2015 | Nano Research2015，8，10： | 7 |
| 6 | Three-dimensional analysis of the modified sloping cooling/shearing process显示文摘A self-designed setup of modified sloping cooling/shearing process was made to prepare the semisolid Al-3wt%Mg alloy. A three-dimensional simulation model was established for the analysis of preparing the semisolid Al-3wt%Mg alloy. Through simulation and experiment, it is shown that the sloping angle of the plate greatly affects temperature and velocity distributions, and the temperature and velocity of the alloy at the exit of the sloping plate increase with the increase of the sloping angle. The alloy temperature decreases linearly from the pouring mouth to the exit. The alloy temperature at the exit increases obviously with the increase of pouring temperature. To prepare the semisolid Al-3wt%Mg alloy with good quality, the sloping angle θ=45° is reasonable, and the pouring temperature is suggested to be designed above 650-660°C but under 700°C. | Renguo Guan Luolian Zhang Chao Wang Jinglin Wen Jianzhong Cui | 2007 | Journal of University of Science and Technology Beijing2007，14，2： | 7 |
| 7 | Evolution of secondary phase particles during deformation of Al-5Ti-1B master alloy and their effect on α-Al grain refinement显示文摘Addition of Al-5Ti-1B alloy to molten aluminum alloys can refine α-Al grains effectively and thereby improve their strength and toughness. TiAl_3 and TiB_2 in Al-5Ti-1B alloy are the main secondary-phase particles for refinement, while the understanding on the effect of their sizes on α-Al grain refinement continues to be fragmented. Therefore, Al-5Ti-1B alloys with various sizes and morphologies of the secondary-phase particles were prepared by equal channel angular pressing(ECAP). Evolution of the secondary-phase particles during ECAP process and their impact on α-Al grain refinement were studied by X-ray diffraction and scanning electron microscope(SEM). Results show that during the ECAP process, micro-cracks firstly appeared inside TiAl_3 particles and then gradually expanded, which resulted in continuous refinement of TiAl_3 particles. In addition, micro-distribution uniformity of TiB_2 particles was improved due to the impingement of TiAl_3 particles to TiB_2 clusters during deformation. Excessively large sizes of TiAl_3 particles would reduce the number of effective heterogeneous nucleus and thus resulted in poor grain refinement effectiveness. Moreover, excessively small TiAl_3 particles would reduce inhibitory factors for grain growth Q and weaken grain refinement effectiveness. Therefore, an optimal size range of 18-22 μm for TiAl_3 particles was suggested. | Hong Yu Ning Wang Renguo Guan Di Tie Zheng Li Yanan An Yang Zhang | 2018 | Journal of Materials Science & Technology2018，34，12： | 6 |
| 8 | InAs/InP/ZnSe Core/Shell/Shell Quantum Dots as Near-Infrared Emitters:Bright,Narrow-Band,Non-Cadmium Containing,and Biocompatible显示文摘High quality InAs/InP/ZnSe core/shell/shell quantum dots have been grown by a one-pot approach.This engineered quantum dots with unique near-infrared(NIR)fluorescence,possessing outstanding optical properties,and the biocompatibility desired for in vivo applications.The resulting quantum dots have significantly lower intrinsic toxicity compared to NIR emissive dots containing elements such as cadmium,mercury,or lead.Also,these newly developed ultrasmall non-Cd containing and NIR-emitting quantum dots showed signifi cantly improved circulation half-life and minimal reticuloendothelial system(RES)uptake. | Renguo Xie Kai Chen Xiaoyuan Chen Xiaogang Peng | 2008 | Nano Research2008，1，6： | 4 |
| 9 | Anomalous origin of left pulmonary artery branch from the aorta with Fallot's tetralogy:one case report显示文摘我们报导经常与呼吸窘迫介绍了的一个十岁的男孩的案例后来出生。胸 X 光检查显示出一个扩大右室。Echocardiography 证明 Fallot 的四联剧和左肺的动脉的典型特征不能被设想。然而,心导管插入术透露左肺的动脉在上升主动脉有异常起源。病人经历了缺点的全部的外科的修正。九天以后,他被解除。我们在场发生的文学评论的结果, physiopathological,这稀罕疾病的临床、诊断、外科的特征。 | Cheng Wei Xiao Yingbin Zhong Qianjin Wen Renguo | 2008 | Journal of Medical Colleges of PLA(China)2008，23，1： | 4 |
| 10 | GRAIN BOUNDARY SEGREGATION AND INTERGRANULAR BRITTLENESS IN HIGH STRENGTH ALUMINIUM ALLOY显示文摘GRAINBOUNDARYSEGREGATIONANDINTERGRANULARBRITTLENESSINHIGHSTRENGTHALUMINIUMALLOY￥Song,Renguo;Zheng,Meiguang(DeparrmentofMateri... | Song, Renguo Zheng, Meiguang | 1995 | 中国有色金属学会会刊:英文版1995，5，3： | 3 |
| 11 | Process Parameter Optimizing and Studies on Microstructure and Properties of AZ31 Alloy Prepared by Semisolid Rolling Process显示文摘A novel continuous semisolid rolling process for producing AZ31 alloy strip was developed. The process parameters were optimized, and microstructure and properties of AZ31 alloy prepared by the process were studied. The results reveal that primary grains of the strip become coarse, and the grain structure transforms from round shape to dendrite with the increment of casting temperature gradually. Eutectic phase fraction and primary grain size increase with the increment of roll speed. The primary grain size decreases firstly and then increases with the increment of the vibration frequency correspondingly. When the casting temperature is from 650℃ to 690℃, the roll speed is 0.069 m·s-1 , and the vibration frequency is about 80 Hz, AZ31 alloy strip with a cross section size of 4 mm×160 mm was prepared by the proposed process. The ultimate tensile strength and elongation are improved 1% and 57%, respectively. | Renguo GUAN Zhanyong ZHAO Xiang WANG Chunguang DAI Chunming LIU | 2013 | Acta Metallurgica Sinica(English Letters)2013，26，3： | 2 |
| 12 | Microstructure Formation Mechanism During a Novel Semisolid Rheo-rolling Process of AZ91 Magnesium Alloy显示文摘A novel semisolid rheo-rolling process of AZ91 alloy was proposed.The microstructure formation mechanism of AZ91 magnesium alloy during the process was studied.The results reveal that the eruptive nucleation and the heterogeneous nucleation exist.During the grain growth process,the grain breakage took place and transformed into fine spherical or rosette grains on the sloping plate gradually,the other grain growth style is direct globular growth.Due to the secondary crystallization of the remnant liquids in the roll gap,the microstructure of the strip becomes finer with the increment of the casting temperature from 650℃ to 690℃.But when the casting temperature reached 710℃,a part of the liquid alloy transformed into the eutectic phases,and the primary grains ripened to form coarse dendrites.In the casting temperature range from 650℃ to 690℃,AZ91 alloy strip with fine spherical or rosette grains was prepared by the proposed process. | Zhanyong ZHAO Renguo GUAN Xiang WANG Chunming LIU | 2013 | Acta Metallurgica Sinica(English Letters)2013，26，4： | 2 |
| 13 | Corrosion Protection of AM50 Magnesium Alloy by Nafion/DMSO Organic Coatings显示文摘为 AM50 镁合金的器官的涂层由简单沉浸和热处理准备了的 Nafion/Dimethysulfoxid (DMSO ) 的腐蚀保护的有效性被调查。它 Nafion/DMSO 器官的涂层的腐蚀抵抗和形态学被电气化学的腐蚀测试和光显微镜学学习。结果证明 Nafion/DMSO 器官的涂层能有效地改进 AM50 镁合金的腐蚀抵抗。另外,腐蚀抵抗与器官的涂层的表面密度增加。 | SONG Renguo ZHENG Xiaohua BAI Shuju BLAWERT Carsten DIETZEL Wolfgang | 2008 | Journal of Wuhan University of Technology(Materials Science)2008，23，2： | 2 |
| 14 | Aging Characteristics, Stress Corrosion Behaviour and Role of Mg Segregation at Grain Boundary in 7175High-strength Al Alloy显示文摘The aging characteristics, stress corrosion behaviour and chemical composition of grain boundary in 7175 high-strength Al alloy during long term aging process have been investigated by hardness measurement, constant elongation rate testing (CERT) and energy spectroscopy analysis. The results indicate that double peaks in aged state feature the hardness and strength of 7175 Al alloy Although the intensity of double peaks is almost equal, the stress corrosion resistance in the second peak-aged state is better than that of the first peak-aged state. The effects of Mg segregation on the binding energy of grain boundary have been calculated by using free electron theory developed by the authors. The results show that Mg segregation plays a significant role in controlling stress corrosion susceptibility which is consistent with the experimental results. | Song, Renguo Geng, Ping Zeng, Meiguang Zhang, Baojin
| 1998 | Journal of Materials Science & Technology1998，14，3： | 2 |
| 15 | In vivo urinary compatibility of Mg-Sr-Ag alloy in swine model显示文摘A biodegradable metallic ureteral stent with suitable mechanical properties and antibacterial activity remains a challenge.Here we reveal the scientific significance of a biodegradable Mg-Sr-Ag alloy with a favorable combination of balanced mechanical properties,adjustable indwelling time in urinary tract and evident antibacterial activity via in vivo experiments in a swine model.Attributed to the rheo-solidification process,equiaxial microstructure and significantly refined grains(average grain size:27.1μm)were achieved.Mg17Sr2 and Mg4Ag were found as the primary precipitates in the matrix,due to which the alloy obtained ca.111%increase in ultimate tensile strength in comparison to pure magnesium.Both the in vitro and in vivo results demonstrated the satisfactory biocompatibility of the alloy.Histological evaluation and bioindicators analysis suggested that there was no tissue damage,inflammation and lesions in the urinary system caused by the degradation process.The stent also improved the post-operative bladder functions viewed from the urodynamic results.Our findings highlight the potential of this alloy as antibacterial biodegradable urinary implant material. | Di Tie Norbert Hort Minfang Chen Renguo Guan Sviatlana Ulasevich Ekaterina V.Skorb Dapeng Zhao Yili Liu Patricia Holt-Torres Huinan Liu | 2022 | Bioactive Materials2022，7，1： | 2 |
| 16 | The comparison of Cu(II) adsorption capability of baker’s yeast, nano-titania and their composite adsorbent显示文摘The anatase nano-TiO2 powder, with crystal size between 40 and 80 nm, was prepared by the liquid phase hydrolysis of TiCl4. At the same time, the nano-TiO2 was utilized with the baker’s yeast biomass as a composite adsorbent to adsorb the Cu ions in the artificial aqueous solution. The investigation showed that the composite adsorbent had a fine adsorption efficiency. The TiO2 in the composite ad- sorbent could cooperate well with baker’s yeast to improve the adsorbing capability of Cu2+ under the following experimental conditions as well: a quantity of composite adsorbent of 5 g·L?1, pH≥4.0, an adsorption time of 40 min and an initial concentration of Cu ions of 10 mg·L?1. In addition, the results of measurements, obtained with a scanning electron microscope, an infrared spectrophotometer and a Zeta potential analyzer, revealed that the baker’s yeast and nano-TiO2 produced the composite ad- sorbent through coordination and hydrogen bonds in particular, etc. The stability of the composite adsorbent and the amount of titania loaded were largely dependent on the concentration of hydrogen ion in the solution. | ZHANG YunSong WANG RenGuo WANG XianXiang LEI SanZhong TONG DongMei | 2008 | Chinese Science Bulletin2008，53，9： | 2 |
| 17 | Mathematic model of solid fraction during rheo-casting by the cooling sloping plate process显示文摘A mathematic model of the solid fraction during rheo-casting by the cooling sloping plate process was established, and the effects of the process parameters on the solid fraction were analyzed. The calculation results show that the experimental result is approximately agreed with the calculation value. The effect of the casting temperature on the change rate of the solid fraction is not obvious. But the beginning solidification length is greatly influenced by the casting temperature. The beginning solidification length increases with the increment of the casting temperature. The effect of the sloping angle on the solid fraction becomes obvious with the increment of the sloping plate length. The solid fraction increases sharply with the decrease of the initial thickness of the melt. The melt initial thickness between 15 and 20 mm is suggested. | Renguo GUAN Zhanyong ZHAO Hongqian HUANG Qiusheng ZHANG Chunming LIU | 2012 | Acta Metallurgica Sinica(English Letters)2012，25，1： | 2 |
| 18 | Improving the intergranular corrosion resistance of Al–Mg–Si–Cu alloys without strength loss by a two-step aging treatment显示文摘 | Zhixiu Wang Hai Li Fenfen Miao Wangjie Sun Bijun Fang Renguo Song Ziqiao Zheng | 2014 | Materials Science & Engineering A2014，，： | 1 |
| 19 | Formation of high-quality I -III-VI semiconductor nanocrys- tals by tuning relative reactivity of cationic precursors 显示文摘 | Xie Renguo Rutherford Michael Peng Xiaogang | 2009 | J Am Chem Soc2009，131，： | 1 |
| 20 | A simple route for highly luminescent quaternary Cu-Zn-In-S nanocrystal emit- ters 显示文摘 | Zhang Jie Xie Renguo Yang Wensheng | 2011 | J Am Chem Soc2011，23，14： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员