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| 1 | Research on Superplasticity and Superplastic Extrusion of MB26 Magnesium Alloy显示文摘The superplastic flow characteristics of hot extruded MB26 Mg alloy under the conditions of tension are studied. The effects of deformation temperature and strain rate on superplasticity are analyzed. On the other hand, the superplastic extrusion of MB26 Mg alloy is also studied. | Fuxiao CHEN Juanhua SU Yunlin YANG and Hongtao in Dept. of Material and Engineering, Luoyang institute of Technology, Luoyang 417039, China | 2001 | Journal of Materials Science & Technology2001，17，1： | 5 |
| 2 | Formation and obstacle avoidance control for multiagent systems显示文摘This paper considers the problems of formation and obstacle avoidance for multiagent systems.The objective is to design a term of agents that can reach a desired formation while avoiding collision with obstacles.To reduce the amount of information interaction between agents and target,we adopt the leader-follower formation strategy.By using the receding horizon control (RHC),an optimal problem is formulated in terms of cost minimization under constraints.Information on obstacles is incorporated online as sensed in a limited sensing range.The communication requirements between agents are that the followers should obtain the previous optimal control trajectory of the leader to each update time.The stability is guaranteed by adding a terminal-state penalty to the cost function and a terminal-state region to optimal problem.Finally,simulation studies are provided to verify the effectiveness of the proposed approach. | Yan, Jing Guan, Xinping Luo, Xiaoyuan Tan, Fuxiao | 2011 | 控制理论与应用(英文版)2011，9，2： | 4 |
| 3 | Effect of hot extrusion process on microstructure and mechanical properties of hypereutectic Al-Si alloys显示文摘The hypereutectic Al-Si alloy was fabricated by hot extrusion process after solidified under electromagnetic stirring,and the microstructure and mechanical properties of the alloy were studied.The results show that the ultimate tensile strength and elongation of the alloy reached 229.5 MPa and 4.6%,respectively with the extrusion ratio of 10,and 263.2 MPa and 5.4%,respectively with extrusion ratio of 20.This indicates that the mechanical properties of the alloy are obviously improved with the increase of extrusion ratio.After hot extruded,the primary Si,eutectic Si,Mg2Si,AlNi,Al7Cu4Ni and Al-Si-Mn-Fe-Cr-Mo phases are refined to different extent,and the efficiency of refinement is obvious more and more with the increase of extrusion ratio.After T6 heat treatment,the sharp corners of these phases become passivated and roundish,and the mechanical properties are improved.The ultimate tensile strength of the extruded alloy after T6 heat treatment reaches 335.3 MPa with extrusion ratio of 10 and 353.6 MPa with extrusion ratio of 20. | Li Runxia Yu Fuxiao Zuo Liang | 2011 | China Foundry2011，8，1： | 3 |
| 4 | Microstructural evolution of direct chill cast Al-15.5Si-4Cu-1Mg-1Ni-0.5Cr alloy during solution treatment显示文摘Heat treatment has important influence on the microstructure and mechanical properties of Al-Si alloys. The most common used heat treatment method for these alloys is solution treatment followed by age-hardening. This paper investigates the microstructural evolution of a direct chill (DC) cast Al-15.5Si-4Cu-1Mg-1Ni-0.5Cr alloy after solution treated at 500, 510, 520 and 530℃, respectively for different times. The major phases observed in the as-cast alloy are α-aluminum dendrite, primary Si particle, eutectic Si, Al7Cu4Ni, Al5Cu2Mg8Si6, Al15(Cr, Fe, Ni, Cu)4Si2 and Al2Cu. The Al2Cu phase dissolves completely after being solution treated for 2 h at 500℃, while the eutectic Si, Al5Cu2Mg8Si6 and Al15(Cr, Fe, Ni, Cu)4Si2 phases are insoluble. In addition, the Al7Cu4Ni phase is substituted by the Al3CuNi phase. The α-aluminum dendrite network disappears when the solution temperature is increased to 530℃. Incipient melting of the Al2Cu-rich eutectic mixture occurrs at 520℃, and melting of the Al5Cu2Mg8Si6 and Al3CuNi phases is observed at a solution temperature of 530℃. The void formation of the structure and deterioration of the mechanical properties are found in samples solution treated at 530℃. | He Kezhun Yu Fuxiao Zhao Dazhi Zuo Liang | 2011 | China Foundry2011，8，3： | 3 |
| 5 | Effect of DH treatment on microstructure and mechanical properties of an LM28-0.3wt.%Nd hypereutectic aluminum silicon alloy显示文摘In this article, a novel heat treatment method, deformation heat (DH) treatment (extrusion + aging), was employed on a hypereutectic aluminum silicon alloy (LM28-0.3wt.%Nd), and its effect on microstructure and mechanical properties of this alloy was investigated. It can be concluded that the eutectic microstructure disappears after the DH treatment, in the meantime the morphology of α(Al) solid solution was transformed from fir-tree and cellular to equiaxed, Si was refined with grain sizes of about 1-10 μm and distributed dispersedly, even some of them became globular shape, which can reduce stress accumulation effectively. Mechanical properties test indicated that the DH treatment could significantly improve the room-temperature strength and have little effect on the high-temperature strength of LM28-0.3wt.%Nd alloy. The fracture mechanism is ductile fracture by fracture morphology analysis. | GAO Bo CHEN Lei YU Fuxiao SUN Shuchen TU Ganfeng | 2007 | Rare Metals2007，26，6： | 3 |
| 6 | Influence of stress on the creep behavior of Cu particle enhancement SnPb based composite solder joints显示文摘Lap joints with a 1 mm2 cross-sectional area were fabricated using Cu particle enhancement 63Sn37Pb based composite solder and 63Sn37Pb eutectic solder to examine the influence of stress on the creep behavior of the solder joints. The results indicate that the creep resistance of the composite solder joints is generally superior to that of the conventional 63Sn37Pb solder joints. At the same time, the creep rupture life of the composite solder joints is declined with increasing stress and drops faster than that of the 63Sn37Pb eutectic solder joints. | YAN Yanfu YAN Hongxing CHEN Fuxiao ZHANG Keke ZHU Jinhong | 2007 | Rare Metals2007，26，1： | 3 |
| 7 | Expression, purification and characterization of two truncated peste des petits ruminants virus matrix proteins in Escherichia coli , and production of polyclonal antibodies against this protein显示文摘 | Fuxiao Liu Xiaodong Wu Lin Li Zengshan Liu Zhiliang Wang | 2013 | Protein Expression and Purification2013，，1： | 2 |
| 8 | Hot deformation and processing maps of DC cast Al-15%Si alloy显示文摘 | Wang Chunxia Yu Fuxiao Zhao Dazhi Zhao Xiang Zuo Liang | 2013 | Materials Science & Engineering A2013，，： | 2 |
| 9 | Studies on the isolation and culture of protoplasts from Kappaphycus alvarezii显示文摘In this study, protoplasts were successfully isolated from Kappaphycus alvarezii using snail enzymes, abalone enzymes and cellulase. The optimum enzymic ratio was fixed to be 20% of abalone enzyme, 12% of cellulase and the osmotic stabilizer was 2.0 mol/L glucose. The optimum enzymic hydrolysis conditions were found to be dark enzymolysis at 30°C continuing for 4.0 h. The resultant density and yield of protoplasts achieved 32.60×104 mL-1, 65.20×104 g-1 tissue for Kappaphycus alvarezii. Finally, under the temperature of 20°C, light intensity of 1 500–2 000 lx and photoperiod of 12 h/d, two developmental pathways were investigated:(1) callus-like cell mass and regenerated plantlet occurred on protoplast;(2) young shoots and calluslike cell mass occurred in tissue blocks after enzymolysis. | ZHANG Si LIU Cui JIN Yuemei CHI Shan TANG Xianming CHEN Fuxiao FANG Xu LIU Tao | 2014 | Acta Oceanologica Sinica2014，33，10： | 2 |
| 10 | Superplasticity, flow and fracture mechanism in an Al–12.7Si–0.7Mg alloy显示文摘 | Furong Cao Zhuoliang Li Nianxian Zhang Hua Ding Fuxiao Yu Liang Zuo | 2013 | Materials Science & Engineering A2013，，： | 1 |
| 11 | Design and realization of a monolithic GaAs 3 bit phase digiti zing DAC 显示文摘 | Zhang Youtao Xia Guanqun Li Fuxiao | 2005 | Chinese Journal of Semiconductors2005，26，5： | 1 |
| 12 | Fundamental differences between spray forming and other semisolid processes 显示文摘 | YU Fuxiao CUI Jianzhong RANGANATHAN S | 2001 | Materials Science and Engineering2001，261，： | 1 |
| 13 | Effect of neodymium on primary silicon and mechanical properties of hypereutectic Al-15%Si alloy显示文摘 | Weixi SHI Bo GAO Ganfeng TU Shiwei LI Yi HAO Fuxiao YU | 2010 | Journal of Rare Earths2010，，： | 1 |
| 14 | Effects of low frequency electromagnetic field on the as-cast microstructures and mechanical properties of superhigh strength aluminum alloy显示文摘 | Yubo Zuo Jianzhong Cui Jie Dong Fuxiao Yu | 2005 | Materials Science & Engineering A2005，，1： | 1 |
| 15 | Effect of withdrawal rate on microstructure of a hypoeutectic Al-Si alloy by low superheat DC casting显示文摘To obtain the billet with homogeneous and spheroidized primary grains is the key step in the semi-solid forming process. Among the semi-solid billet preparation methods, the process of low-superheat direct chill (DC) casting is simpler and more effective. In this study, the billets of AlSi7Mg alloy were prepared by low-superheat DC casting at various withdrawal rates. The effect of withdrawal rate on the surface quality of the billets was investigated, and the evolution mechanism of the microstructural morphology in the billets was analyzed. The results show that the periodic corrugations and a large quantity of fine shrinkage pits appear in the billet surface when the withdrawal rate is 100 mm·min-1, and the above defects in the billet surface can be eliminated completely when the withdrawal rate is above 150 mm·min-1. But when the withdrawal rate is too fast (250 mm·min-1), the primary α grains, except the ones in the billet center, have not enough time for ripening due to the high silidification rate, and will solidify as the dendrite structure. When the withdrawal rate is between 150 - 200 mm·min-1, the dendritic growth of the primary α grains is effectively inhibited, and a billet of AlSi7Mg alloy with a smooth surface and homogeneous, fine, non-dendritic grains can be obtained. | Zhao Dazhi Liu Fang Yu Fuxiao Hong Tao Zuo Liang | 2013 | China Foundry2013，10，3： | 1 |
| 16 | A Study on Gear Tooth Metal Flowing Law and Process Optimization of Spiral Bevel Gear Forging 显示文摘 | Gao Zhenshan Deng Xiaozhong Chen Fuxiao | 2013 | Advanced Materials Research2013，，753755： | 1 |
| 17 | Consensus protocol in networked multi-agent systems with non-balanced topology显示文摘 | TAN Fuxiao GUAN Xinping LIU Derong | 2007 | Control Theory & Applications2007，24，1： | 1 |
| 18 | Fundamental differences between spray forming and other semisolid processes显示文摘 | Yu Fuxiao Cui Jianzhong Ranganathan S | 2001 | Materials Science and Engineering2001，，2001： | 1 |
| 19 | Monitoring Mean and Variance Change-Points in Long-Memory Time Series显示文摘This paper proposes two ratio-type statistics to sequentially detect mean and variance change-points in the long-memory time series.The limiting distributions of monitoring statistics under the no change-point null hypothesis,alternative hypothesis as well as change-point misspecified hypothesis are proved.In particular,a sieve bootstrap approximation method is proposed to determine the critical values.Simulations indicate that the new monitoring procedures have better finite sample performance than the available off-line tests when the change-point nears to the beginning time of monitoring,and can discriminate between mean and variance change-point.Finally,the authors illustrate their procedures via two real data sets:A set of annual volume of discharge data of the Nile river,and a set of monthly temperature data of northern hemisphere.The authors find a new variance change-point in the latter data. | CHEN Zhanshou LI Fuxiao ZHU Li XING Yuhong | 2022 | Journal of Systems Science & Complexity2022，35，3： | 1 |
| 20 | Use of baculovirus expression system for generation of virus-like particles: Successes and challenges显示文摘 | Fuxiao Liu Xiaodong Wu Lin Li Zengshan Liu Zhiliang Wang | 2013 | Protein Expression and Purification2013，，2： | 1 |
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