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    题名 作者 年代 出处 被引量
1Changes in DNA base sequences in the mutant of Arabidopsis thaliana induced by low-energy N+ implantation显示文摘Fengqi Chang Xuanming Liu Yinxin Li Gengxiang Jia Jingjing Ma Gongshe Liu Zhiqing Zhu 2003Science in China Series C: Life Sciences2003,,5:1
2The effect of matrix alloying on the tensile strength of carbon-fibre-reinforced aluminium composites 显示文摘CHEN Xiuqin HU Gengxiang 1986Materials Science and Engineering1986,84,:1
3Rotation and translation invariants of Gaussian–Hermite moments显示文摘Bo Yang Gengxiang Li Huilong Zhang Mo Dai 2011Pattern Recognition Letters2011,,9:1
4METASTABLE STATE TRANSFOR MATIONS OF Al_3Ti BASE ALLOYS DURING MECHANICAL MILLING AND SUBSEQUENT ANNEALING显示文摘Developing multi phase alloy is an effective approach for the strengthening and toughening of the L1 2 Al 3Ti alloy. A Nb modified Al 3Ti base alloy which has a L1 2 matrix and the precipitated second phase has been developed. Since the effect of second phase is strongly influenced by its size and distribution, high energy ball milling was employed to fabricate the alloy in comparison with the conventional casting process. It was found that structure evolution during mechanical milling is different for DO 22 , L1 2 and L1 2+DO 22 two phase alloys. The DO 22 Al 3Ti transformed only to a FCC structure even after long time milling. The ordering of L1 2 Al 67 Ti 25 Mn 8 decreased quickly and changed into a FCC structure after short time milling, subsequent milling led to the amorphous transition. The DO 22 phase in Al 3Ti Mn Nb alloys dissolved into the L1 2 matrix quickly in the early stage of milling and the matrix changed into a FCC supersaturated solid solution after 10 h milling, further milling led to the amorphous transition. Reordering of the metastable structures occurred during the annealing process. The consolidated materials consisting of fine equiaxed grains with dispersed particles exhibited remarkable improvement of strength and promising ductility.Qian Wang, Yunyi Fu, Jinxu Zhang, Rong Shi and Gengxiang Hu The Education Ministry of China Open Research Lab for High Temperature Materials and Testing, Shanghai Jiao Tong University, Shanghai 200030, China 1999中国有色金属学会会刊:英文版1999,9,S1:1
5Deformation and Dislocation Structure in L1_2 Titanium Trialuminide Alloys显示文摘The deformation behaviour and the nature of dislocations of the Al3Ti-base L12 alloya modified with Fe and Mn etc, were investigated. The results show that the deformation and fracture character istics are closely related to the alloy compositions. The effect of hot-working process on the room tem perature ductility is remarkable, not only resulting in an appreciable improvement of compressive properties but also showing a 0.28% plastic strain in tensile test. The SISF dissociation of a < 110>dislocations on {111} planes was found at room temperature. The determined dissociation scheme is consistent with the mechanical behaviour of these alloys in the lower temperature region.Gengxiang HU Shipu CHEN Xiaohua WU Yonghua RONG and Xiaofu CHEN(Dept. of Materials Science, Shanghai Jiao Tong University, Shanghai, 200030, China) 1994Journal of Materials Science & Technology1994,10,6:0
6Resistance of Tribolium castaneum to Phosphine and the Relationship between Complete Lethal Concentration and Exposure Time of Phosphine in Hainan Province显示文摘[Objective] The paper was to investigate the resistance of Tribolium castaneum to phosphine in Hainan Province. [Method] Using the measurement method of phosphine resistance of stored grain pests recommended by FAO,the phosphine resistance of eight strains of T. castaneum adults in Hainan Province was determined. [Result] The resistance coefficients of different strains of T. castaneum against phosphine ranged from 612 to 1 045,and all strains reached extremely high resistance level( Rf > 160). When the concentration of phosphine was 200 mL/m^3,Rf612,Rf826. 4 and Rf1045 strains had complete lethal time of 8,9 and 11 d,respectively. [Conclusion] T. castaneum in Hainan Province had very strong resistance to phosphine,and the operation scheme of low concentration and long duration should be adopted in elimination of T. castaneum.Chen Yan Zhang Hongjian Xie Gengxiang Zhao Kuo Luo Shan Wang Tao Zheng Lianhe 2017Plant Diseases and Pests2017,8,4:0
7CREEP CRACK PROPAGATION IN CONVENTIONAL CAST AND DIRECTIONALLY SOLIDIFIED SUPERALLOY RENE 80显示文摘The creep crack propagation in superalloy René80 of two different microstructures,i.e.,equiaxed grain structure by conventional casting and columnar grain by directionalsolidification,was investigated under static load at 1123 K.The creep crack growth rate,da/dt,seems to be correlated with the stress intensity factor,K.The creep crack growth ratein the directionally solidified alloy is lower than that in the conventional cast alloy,owing tothe elimination of transverse grain boundaries.The effect of microstructure on creep crackpropagation has also been discussed.SUN Jian ZHANG Yuanhu HU Gengxiang Shanghai Jiaotong University,Shanghai,China SUN Jian,lecturer,Department of Materials Science,Shanghai Jiaotong University,Shanghai 200030,China 1993Acta Metallurgica Sinica(English Letters)1993,6,5:0
8Decomposition of 1, 2, 4-trichlorobenzene by electron beams显示文摘WUMinghong JIAOZheng WANGYanli GENGXiang LIZhen LUSenlin 2005辐射研究与辐射工艺学报2005,23,2:0
9EFFECTS OF HIGH-ENERGY BALL MILLING ON STRUCTURE AND MECHANICAL PROPERTIES OF L1_2 INTERMETALLIC COMPOUND Al_(67)Mn_8Ti_(25)显示文摘1INTRODUCTIONTheorderedintermetaliccompoundAl3Tiisnoticeablebecauseofitslowdensity(3.4g/cm3),excelenthightemperatureoxidatio...Yunyi, Fu Qian, Wan Gengxiang, Hu 1998中国有色金属学会会刊:英文版1998,8,3:0
10Sampling via the aggregation value for data-driven manufacturing显示文摘Data-driven modelling has shown promising potential in many industrial applications,while the expensive and time-consuming labelling of experimental and simulation data restricts its further development.Preparing a more informative but smaller dataset to reduce labelling efforts has been a vital research problem.Although existing techniques can assess the value of individual data samples,how to represent the value of a sample set remains an open problem.In this research,the aggregation value is defined using a novel representation for the value of a sample set by modelling the invisible redundant information as the overlaps of neighbouring values.The sampling problem is hence converted to the maximisation of the submodular function over the aggregation value.The comprehensive analysis of several manufacturing datasets demonstrates that the proposed method can provide sample sets with superior and stable performance compared with state-of-the-art methods.The research outcome also indicates its appealing potential to reduce labelling efforts for more data-scarcity scenarios.Xu Liu Gengxiang Chen Yingguang Li Lu Chen Qinglu Meng Charyar Mehdi-Souzani 2022National Science Review2022,9,11:0
11DEVELOPING MULTIPHASE AL_3Ti ALLOYS显示文摘DEVELOPINGMULTIPHASEAL_3TiALLOYSWANGQian;WANGJian;WENGXiaojun;SUNJian;CHENShipu;HUGengxiang(ShanghaiJiaotongUniversity,Shangh?..WANG Qian WANG Jian WENG Xiaojun SUN Jian CHEN Shipu HU Gengxiang (Shanghai Jiaotong University, Shanghai 200010. China) 1995Acta Metallurgica Sinica(English Letters)1995,8,Z1:0
12Nonlinear wave in granular systems based on elastoplastic dashpot model显示文摘The dynamic dashpot models are widely used in EDEM commercial software.However,most dashpot models suffer from a serious numerical issue in calculating the granular chain because the denominator of damping force includes the initial impact velocity.Moreover,the existing dynamic dashpot models extended from the original Hertz contact law overestimated the contact stiffness in the elastoplastic contact phase.These two reasons above result in most dynamic dashpot models confronting some issues in calculating the multiple collision of the granular chain.Therefore,this investigation aims to propose a new composite dynamic dashpot model for the dynamic simulation of granular matters.First,the entire contact process is divided into three different phases:elastic,elastoplastic,and full plastic phases.The Hertz contact stiffness is still used in the elastic contact phase when the contact comes into the elastoplastic or full plastic phase.Hertz contact stiffness in the dynamic dashpot model is replaced by linearizing the contact stiffness from the Ma‐Liu(ML)model in each time step.Second,the whole contact behavior is treated as a linear mass‐spring‐damper model,and the damping factor is obtained by solving the single‐degree‐freedom underdamped vibration equation.The new dynamic dashpot model is proposed by combining the contact stiffnesses in different contact phases and corresponding damping factors,which not only removes the initial im-pact velocity from the denominator of damping force but also updates the contact stiffness based on the constitutive relation of the contact body when the contact comes into the elastoplastic or full plastic phase.Finally,a granular chain is treated as numerical examples to check the reasonability and effectiveness of the new dynamic dashpot model by comparing it to the experimental data.The simulation shows that the solitary waves obtained using the new dashpot model are more accurate than the dashpot model used in EDEM software.Gengxiang Wang Caishan Liu 2021International Journal of Mechanical System Dynamics2021,1,1:0
13INFLUENCE OF GRAIN BOUNDARY MORPHOLOGY ON CREEP AND FRACTURE BEHAVIOURS OF SUPERALLOYS IN SULFUR-CONTAINING ENVIRONMENT显示文摘Studies on the high temperature creep and fracture behaviours in air or in SO2 contaminatedenvironment for the Fe-base superalloy GH302 with flat or zigzag grain boundaries(GB)and the Ni-base superalloy Rene 80 were carried out.Although the creep rupture propertiesof the GH302 with zigzag GB was remarkably superior to that of flat GB in air,the propertiesof both droped dramatically in 10% SO2-air environment,the creep rupture properties of thedirectional solidified Rene 80 were much better than that of the conventionally cast alloy inair,and also kept the same property in SO2 contaminated environment as in air.Owing to theinteraction between creep and sulphidation,the failure mechanism relates to the formation ofmolten Ni-Ni-3S2 eutectic along GB,led to the premature failure of the alloy.ZHANG Yuanhu SUN Jian XIANG Yi HU Gengxiang Shanghai Jiaotong University,Shanghai,ChinaLI Tiefan Institute of Corrosion and Protection of Metals,Academia Sinica,Shenyang,China Yuanhu,Department of Materials Science and Engineering,Shanghai Jiaotong University,Shanghai,200030 1991Acta Metallurgica Sinica(English Letters)1991,4,2:0
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