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| 1 | Direct numerical simulation of shock/turbulent boundary layer interaction in a supersonic compression ramp显示文摘A direct numerical simulation of the shock/turbulent boundary layer interaction flow in a supersonic 24-degree compression ramp is conducted with the free stream Mach number 2.9.The blow-and-suction disturbance in the upstream wall boundary is used to trigger the transition.Both the mean wall pressure and the velocity profiles agree with those of the experimental data,which validates the simulation.The turbulent kinetic energy budget in the separation region is analyzed.Results show that the turbulent production term increases fast in the separation region,while the turbulent dissipation term reaches its peak in the near-wall region.The turbulent transport term contributes to the balance of the turbulent conduction and turbulent dissipation.Based on the analysis of instantaneous pressure in the downstream region of the mean shock and that in the separation bubble,the authors suggest that the low frequency oscillation of the shock is not caused by the upstream turbulent disturbance,but rather the instability of separation bubble. | LI XinLiang1,FU DeXun2,MA YanWen2 & LIANG Xian1 1 Key Laboratory of High Temperature Gas Dynamics,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China 2 The State Key Laboratory of Nonlinear Mechanics,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China | 2010 | Science China(Physics,Mechanics & Astronomy)2010，53，9： | 24 |
| 2 | Research and Application Prospect of Computer Simulation on Heat Treatment Process显示文摘In this paper, a modified temperature-phase transformation-stress/strain field coupled 3D non-linear mathematical model was used in the computer simulation on heat treatment processes of workpieces including catch jaw, anchor ring, cold roller, large-scale bearing roller, nitriding crank shaft, etc. The simulation on complicated technologies such as pre-cooled quenching, double media quenching, self-tempering, difference temperature heating, nitriding distortion was carried out. The optimum design of heat treatment technology has been realized. The successful application of computer simulation on heat treatment have also been demonstrated. | Pan Jiansheng, Li Yongjun, Cu Jianfeng, Hu Mingjuan Open Research Lab for High Temperature Materials & Testing, SJTU, Shanghai, 200030 | 2000 | Journal of Shanghai Jiaotong university(Science)2000，5，1： | 19 |
| 3 | DISLOCATION DISSOCIATIONS AND FAULTENERGIES IN Ni_3Al ALLOYS DOPED WITH PALLADIUM显示文摘Dislocation structures in polycrystalline Ni 3Al alloy doped with palladium deformed at room temperature have been investigated by transmission electron microscopy. The structure consists mainly of dislocations dissociated into a /2〈011〉 super partials bounding an anti phase boundary (APB). Dislocations dissociated into a /3〈112〉 super Shockley partials bounding a superlattice intrinsic stacking fault (SISF) are also common debris. The majority of the SISFs are truncated loops, i.e. the partials bounding the SISF are of similar Burgers vector. These faulted loops are generated from APB coupled dislocations, according to a mechanism for formation of SISFs proposed by Suzuki et al , and recently modified by Chiba et al . The APB energies for {111} and {010} slip planes are measured to be 144±20 mJ/m 2 and 102±11 mJ/m 2 respectively, and the SISF energy has been estimated to be 12 mJ/m 2 in this alloy. It is concluded that the dislocation structure in Ni 74.5 Pd 2Al 23.5 alloy deformed at room temperature is similar to that in binary Ni 3Al, and the difference in fault energies between these two alloys is small. Thus, it seems unlikely that the enhancement of ductility of Ni 74.5 Pd 2Al 23.5 results from only such a small decrease of the ordering energy of the alloy. SISF bounding dislocations also have no apparent influence on the ductilization of Ni 74.5 Pd 2Al 23.5 alloy. | J. Sun *# , C. S. Lee # and J. K. L. Lai # * Open Lab for High Temperature Materials & Tests, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200030, China # Department of Physics and Materials | 1999 | 中国有色金属学会会刊:英文版1999，9，S1： | 16 |
| 4 | Experimental demonstration of a new concept of drag reduction and thermal protection for hypersonic vehicles显示文摘A new idea of drag reduction and thermalprotection for hypersonic vehicles is proposed based on thecombination of a physical spike and lateral jets for shock-reconstruction. The spike recasts the bow shock in front ofa blunt body into a conical shock, and the lateral jets workto protect the spike tip from overheating and to push theconical shock away from the blunt body when a pitchingangle exists during flight. Experiments are conducted in ahypersonic wind tunnel at a nominal Mach number of 6. Itis demonstrated that the shock/shock interaction on the bluntbody is avoided due to injection and the peak pressure atthe reattachment point is reduced by 70% under a 4°attackangle. | Zonglin Jiang Yunfeng Liu Guilai Han Wei Zhao Key Laboratory of High Temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences, 100190 Beijing, China | 2009 | Acta Mechanica Sinica2009，25，3： | 14 |
| 5 | EXPERIMENTAL INVESTIGATION AND THERMODYNAMIC CALCULATION ON PHASE PRECIPITATION OF INCONEL 740显示文摘A novel nickel-based superalloy INCONEL 740 was under development for application in ultra-supercritical superheater tubers above 750℃. The precipitation behaviors of η phase and γ’ particles of the alloy were investigated through experimental study and phase computation. Experimental results showed that η phase formed a Widmanst?tten pattern structure following long-term exposure at elevated temperatures and that the coarsening of γ’ particle follows a cube rate law:r-3 ∝ t. Thermodynamic calculation results showed that Al and Ti had an important effect on the precipitation behavior of γ’ andη phases. Two suggested novel modified alloys, wherein the Al and Ti contents were modified, were designed and melted for the experimental study. The preliminary results indicated that the modified alloys exhibited higher structural stability following long-term exposure at 750℃ till 5000h. | S.Q. Zhao* Department of Physics, Ningxia University, Yinchuan 750021, China Y. Jiang Department of Materials Science, The Northwest Second Nationalities Institute, Yinchuan 750021, China J.X. Dong and X.S. Xie High Temperature Materials Research Laboratories, University of Science and Technology Beijing, Beijing 100083, China | 2006 | Acta Metallurgica Sinica(English Letters)2006，19，6： | 11 |
| 6 | Solidification Simulation of Investment Castings of Single Crystal Hollow Turbine Blade显示文摘The three-dimensional solidification simulation of the investment castings of single crystal hollow turbine blade at the withdrawal rates of 2 mm/min, 4.5 mm/min and 7 mm/min has been performed with the finite element thermal analysis. The calculated results are in accordance with the experimental ones. The results show that with the increase of withdrawal rate the concave curvature of the liquidus isotherm is larger and larger, and the temperature gradients of the blades increase. No effects of withdrawal rate on the distribution of the temperature gradients of the starter and helical grain selector of the blades are observed at withdrawal rates of 2 mm/min, 4.5 mm/min and 7 mm/min. The relatively high temperature gradient between 500℃/cm and 1000℃/cm in the starter and helical grain selector is obtained at three withdrawal rates. | Jiarong LI, Shizhong LIU, Hailong YUAN and Zhengang ZHONGNational Key Laboratory of Advanced High Temperature Structural Materials, Beijing Institute of Aeronautical Materials, Beijing 100095, China | 2003 | Journal of Materials Science & Technology2003，19，6： | 9 |
| 7 | 再论冷聚变机理与冷聚变材料的提出显示文摘阐明我过去对冷聚变的思考与机理的提出,现在对此机理进一步进行深入的分析,从而提出了研制冷聚变材料的设想。 | Gou Qingquan Institute of Atomic and Molecular Sciences at High Temperature and High Pressure, Sichuan Union University, Chengdu 610065 | 1998 | 原子与分子物理学报1998，15，1： | 9 |
| 8 | Gasdynamic characteristics of toroidal shock and detonation wave converging显示文摘The modified CCW relation is applied to analyzing the shock, detonation wave converging and the role of chemical reactions in the process. Results indicate that the shock wave is strengthened faster than the detonation wave in the converging at the same initial Mach number. Euler equations implemented with a detailed chemical reaction model are solved to simulate toroidal shock and detonation wave converging. Gasdynamic characteristics of the converging are investigated, including wave interaction patterns, observable discrepancies and physical phenomena behind them. By comparing wave diffractions, converging processes and pressure evolutions in the focusing area, the different effects of chemical reactions on diffracting and converging processes are discussed and the analytic conclusion is demonstrated through the observation of numerical simulations. | TENG Honghui1,2 & JIANG Zonglin2 1. Key Laboratory of High Temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sci- ences, Beijing 100080, China 2. Graduate University of Chinese Academy of Sciences, Beijing 100039, China | 2005 | Science China(Physics,Mechanics & Astronomy)2005，48，6： | 7 |
| 9 | MICROSTRUCTURAL EVOLUTION AND MECHANISMS OF SUPERPLASTICITY IN LARGE GRAINED IRON ALUMINIDES显示文摘The superplastic behavior has been found in Fe 3Al and FeAl alloys with grain sizes of 100~600 μm. The large grained Fe 3Al and FeAl alloys exhibit all deformation characteristics of conventional fine grain size superplastic alloys. However, superplastic behavior was found in large grained iron aluminides without the usual prerequisites for the superplasticity of a fine grain size and grain boundary sliding. The metallographic examinations have shown that average grain size of large grained iron aluminides decreased during superplastic deformation. Transmission electron microscopy (TEM) observations have shown that there were a great number of subgrain boundaries which formed a network and among which the proportion of low and high angle boundaries increased with the increase of strain. The observed superplastic phenomenon is explained by continuous recovery and recrystallization. During superplastic deformation, an unstable subgrain network forms and these subboundaries absorb gliding dislocations and transform into low and high angle grain boundaries. A dislocation gliding and climb process accommodated by subboundary sliding, migration and rotation, allows the superplastic flow to proceed. | Dongliang Lin (T.L.Lin) and Yi Liu Open Laboratory of Education Ministry of China for High Temperature Materials Tests, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200030, China | 1999 | 中国有色金属学会会刊:英文版1999，9，S1： | 7 |
| 10 | Research on EM pulse protection property of plasma-microwave absorptive material-plasma sandwich structure显示文摘A plasma-microwave absorptive material (MAM)-plasma sandwich structure is presented to protect the electronic device against high power electromagnetic pulse. The model of electromagnetic wave reflected by and transmitting through the structure is established. Based on the characteristic parameters of plasma generated by discharge and usual MAM, the electromagnetic transmissive properties of the sandwich structure are investigated by the method of finite difference in time domain. The results indicate that in a rather broad frequency range, the electromagnetic attenuations by the structure are obviously better than the sum of attenuations resulted from plasma and MAM respectively. The models and results presented are instructive for electromagnetic pulse protection. | YUAN ZhongCai & SHI JiaMing State Key Laboratory of Pulse Power Laser Technology, Key Lab of Infrared and Low Temperature Plasma of Anhui Province, Hefei Electronic Engineering Institute, Hefei 230037, China | 2010 | Science China(Technological Sciences)2010，53，12： | 6 |
| 11 | Effect of Temperature on the Synthesis of SiC Coating on Carbon Fibers by the Reaction of SiO with the Deposited Pyrolytic Carbon Layer显示文摘The influence of reaction temperature on the preparation of SiC coating on carbon fibers by the reaction of silicon monoxide with the deposited pyrolytic carbon (PyC) layer has been discussed.With rising reaction temperature,the thickness of SiC layer increases and the SiC grain is coarsening.The apparent activation energy for the synthesis of SiC layer is about 103.3 kJ/mol.The oxidation resistance of carbon fiber can be improved by the SiC/PyC layers significantly.The initial oxidation temperature of the SiC/PyC coated carbon fiber is about 300℃ higher than that of the uncoated carbon fiber.The oxidation of the SiC/PyC coated carbon fiber is owing to the diffusion of oxygen through the cracks generated by the mismatch of thermal expansion. | Hejun Li,Haibo Ouyang,Lehua Qi,Yulei Zhang,Zhengjia Li and Jianfeng Wei C/C Composites Research Center,Key Laboratory of Ultrahigh Temperature Composites,Northwestern Polytechnical University,Xi an 710072,China | 2010 | Journal of Materials Science & Technology2010，26，3： | 5 |
| 12 | Influence of Ru addition on microstructure and stress-rupture property of Ni-based single crystal superalloys | Jing-yang CHEN~1,Qiang FENG~(1,2),La-mei CAO~3,Zu-qing SUN~1 1.State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing, Beijing 100083,China 2.National Center for Materials Service Safety,University of Science and Technology Beijing,Beijing 100083,China 3.National Key Laboratory of Science and Technology on Advanced High Temperature Structural Materials, Beijing Institute of Aeronautical Materials,Beijing 100095,China | 2010 | Progress in Natural Science:Materials International2010，20，1： | 5 |
| 13 | 氢原子团簇与金属氢的形成理论显示文摘系统介绍作者提出的氢原子团簇的形成理论和用该理论所取得的成果,阐明高压合成金属氢的可能性和金属键的本质。 | Gou QingquanInstitute of Atomic and Molecular Sciences at High Temperature and High pressure, Sichuan Union University, Chengdu 610065, P.R.China | 1998 | 原子与分子物理学报1998，0，S1： | 5 |
| 14 | Thoughts on Strategic Development of China's Refractories I ndustry显示文摘For China' s refractories industry, the first two decades in the new century would be a period of structural optimization with reorganization of refractories enterprises,reconstruction of manufacturing plants and restructuring of product varieties. An important strategic measure should be to develop high quality synthetic raw materials and high performance functional products mainly based on our rich natural resources to cope with new demands of advanced high temperature technologies. | ZHONG Xiangchong(High Temperature Ceramics Institute,Zhengzhou University,Zhengzhou, Henan province, 450052, China) | 2003 | China's Refractories2003，12，2： | 5 |
| 15 | Numerical Simulation on Thermal Stress of Large-scale Bearing Roller during Heating Process of Final Heat Treatment显示文摘hi this paper, the non-linear finite element method had been applied to calculate the thermal stress evolving process of the large-scale bearing roller during heating process of final heat treatment. It was found that two stress peaks appeared during heating process and the second stress peak was higher than the first. If the preheating time was elongated, the second stress peak was reduced distinctly. Therefore, the pre-heating time should be elongated suitably to ensure safety in the practical manufacture process. | Li Yongjun, Pan Jiansheng, Zhang Weimin, Gu Jianfeng, Hu Mingjuan Open Lab of the Educational Ministry for High Temperature Material & Tests, SJTU, Shanghai, 200030 | 2000 | Journal of Shanghai Jiaotong university(Science)2000，5，1： | 4 |
| 16 | PHASE TRANSFORMATION BEHAVIOR IN THE SPUTTER DEPOSITED Ti-Pd-Ni THIN FILMS显示文摘Ti-Pd-Ni thin films were prepared by sputter deposition at room temperature. The as- deposited thin films were crystallized at 750℃ followed by various cooling conditions, and the structural change emerged in the films was characterized by means of both X-ray diffraction (XRD) and differiantial scanning calorimetry (DSC). It was found that the phase transformation temperatures of Ti50.6Pd30Ni19.4 ingot are much higher than those of its thin film. The B19’ and B19 phases coexisted, together with the Ti2 Ni and Ti2Pd type of precipitates at the room temperature. Both the B19-B2 one- stage and the B19’-B19-BY2 two-stage phase transformations took place when the films experienced thermal change across the region of phase transformation temperatures. | Q. C. Tian and J.S. Wu Key Laboratory of the Ministry of Education for High Temperature Materials and Tests, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200030, China | 2001 | Acta Metallurgica Sinica(English Letters)2001，14，5： | 2 |
| 17 | HIGH TEMPERATURE CRACK PROPAGATION AND FRACTURE OF SUPERALLOYS显示文摘1.IntroductionHighspeedrotatingdisksareconsideredasmostimportanthotcomponentsforturbochargers,expanders,compressors,landba... | X.S. Xie, Z.C. Xu and J.X. Dong High Temperature Materials Research Laboratory,University of Science and Technology Beijing,Beijing 100083, China | 1999 | Acta Metallurgica Sinica(English Letters)1999，12，1： | 2 |
| 18 | Finite Element Analysis of Die Geometry and Process Conditions Effects on Equal Channel Angular Extrusion for β-Titanium Alloy显示文摘The finite element analysis was applied to evaluate the respective influences of die geometry and process conditions on plastic strain distribution for β-titanium (Ti-13V11Cr3Al) alloy during the equal channel angular extrusion (ECAE). It was found that optimum equal channel angular extrusion die geometry is strongly material dependent. Optimal strain homogeneity in the Ti-13V11Cr3Al alloy may be achieved at r (inner radius)=5 mm, R (outer radius)=3 mm. The equivalent plastic strain increases with increasing friction coefficient. And the better homogeneity of the equivalent plastic strain distribution can be achieved when friction coefficient value is lower. The faster the ram speed is, the lower the homogeneity of the equivalent plastic strain distribution is and the influence is slight. The back-pressure does not help to improve the plastic strain homogeneity, and the increasing temperature has a slightly favourable effect on the plastic strain homogeneity between 400 and 600 ℃. | SI Jia-yong1,2, GAO Fan3, ZHANG Ji3 (1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, Hunan, China 2. College of Mechanical and Electrical Engineering, Central South University of Forestry and Technology, Changsha 410004, Hunan, China 3. High Temperature Material Research Division, Central Iron and Steel Research Institute, Beijing 100081, China) | 2012 | Journal of Iron and Steel Research(International)2012，19，10： | 1 |
| 19 | Survey on intraoperative temperature management in Europe 显示文摘 | Torossian A TEMMP (Thermoregulation in Europe Moni- toring andManaging Patient Temperature ) Study Group | 2007 | Eur J Anaesthesiol2007，24，8： | 1 |
| 20 | Part I: Test/numerical model and validation 显示文摘 | Studies of air-flow and temperature fields inside a passenger compartment for improving thermal comfort and saving energy | 2009 | Applied Thermal Engineering2009，29，： | 1 |
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