{"currentpage":1,"firstResult":0,"maxresult":10,"pagecode":5,"pageindex":{"endPagecode":5,"startPagecode":1},"records":[{"abstractinfo":"Based on rigid-plastic finite element method, a skew rolling process of <span style=\"color:red\">stepped</span> <span style=\"color:red\">part</span> is simulated. Considering nodesaving and effective remeshing, the tetrahedron solid elements are used to discrete workpiece. The workpiece material adopts rigid-plastic model, where the flow stress is function of effective strain, effective strain rate and temperature. The thermomechanical coupling is considered in the simulation. To model the spinning workpiece undergoing plastic deformation, a novel solution is presented and applied in this paper. The stress state in the workpiece and forming characteristic of skew rolling are analyzed. The forming load, including roller torque and forces in three directions are predicted. The above analyses are helpful to understanding of forming mechanisms and improving of process and die design.","authors":[{"authorName":"Gang FANG","id":"60eaa323-498f-44c9-b847-41a6c05be5d4","originalAuthorName":"Gang FANG"},{"authorName":" Pan ZENG","id":"abddd012-cc71-4d27-8d6b-0abbb747ce38","originalAuthorName":" Pan ZENG"}],"categoryName":"|","doi":"","fpage":"38","id":"e8cb6e51-9bc9-4abe-93b8-b95552fce354","issue":"Supl.","journal":{"abbrevTitle":"CLKXJSY","coverImgSrc":"journal/img/cover/JMST.jpg","id":"11","issnPpub":"1005-0302 ","publisherId":"CLKXJSY","title":"材料科学技术（英文）"},"keywords":[{"id":"f9345ce8-b6c3-4a97-8ee3-76510b720335","keyword":"FEM","originalKeyword":"FEM"},{"id":"72f5ada0-167e-424e-852e-81092256db0b","keyword":"null","originalKeyword":"null"},{"id":"394cddd6-d267-4aac-8022-ca2d57f59513","keyword":"null","originalKeyword":"null"},{"id":"4c57e92a-9c9b-4fe4-900e-33ae085ad845","keyword":"null","originalKeyword":"null"},{"id":"462fb7c5-cb43-48cb-823e-0b9b2ff453d2","keyword":"null","originalKeyword":"null"}],"language":"en","publisherId":"1005-0302_2003_Supl._5","title":"3D Rigid-Plastic Finite Element Analysis for Skew Rolling Process of the <span style=\"color:red\">Stepped</span> <span style=\"color:red\">Part</span>","volume":"19","year":"2003"},{"abstractinfo":"","authors":[{"authorName":"","id":"184e76c1-7ab8-4f60-9601-25716c9ed30d","originalAuthorName":""},{"authorName":"","id":"6417af19-3a13-4456-85af-104748a9983a","originalAuthorName":""}],"doi":"","fpage":"38","id":"2e9ec988-7d16-4082-9cd9-e38d85f151dd","issue":"z1","journal":{"abbrevTitle":"CLKXJSY","coverImgSrc":"journal/img/cover/JMST.jpg","id":"11","issnPpub":"1005-0302 ","publisherId":"CLKXJSY","title":"材料科学技术（英文）"},"keywords":[{"id":"52bf6727-a2a1-436e-bc62-c003238c69b9","keyword":"","originalKeyword":""}],"language":"zh","publisherId":"clkxjsxb-e2003z1012","title":"3D Rigid-Plastic Finite Element Analysis for Skew Rolling Process of the <span style=\"color:red\">Stepped</span> <span style=\"color:red\">Part</span>","volume":"19","year":"2003"},{"abstractinfo":"The stability of thermoelastic martensite in a Cu-14.84 wt-%Zn-7.75 wt-%Al shape mem- ory alloy with M_s=106°C after direct quenching or <span style=\"color:red\">stepped</span> quenching has been investigated by using TEM,X-ray diffroctometer and double electric bridge instrument.The martensite aged for about 3 h at room temperature after either direct quenching or <span style=\"color:red\">stepped</span> quenching (150°C,2 rain)is the M18R structure.The martensite just directly quenched is not so stable, both its certain diffraction peaks and specific electric resistivity,change with aging at room temperature;whereas it is stable after <span style=\"color:red\">stepped</span> quenching(150°C.2 min),and its diffraction peaks and specific electric resistivity change no more with aging at room temperature.The above mentioned results seem to be explained by the martensite reordering.","authors":[{"authorName":"LU Xiaoye Central south University of Technology","id":"09a1c968-3fc3-459a-a024-3d5e7786bae2","originalAuthorName":"LU Xiaoye Central south University of Technology"},{"authorName":"Changsha","id":"608d8cea-e5db-4130-8c6d-605af9c4c852","originalAuthorName":"Changsha"},{"authorName":"China Lecturer","id":"f5177f24-73d0-4ac8-88be-354b462b5573","originalAuthorName":"China Lecturer"},{"authorName":"Dept.of Materials Science and Engineering","id":"f8da654d-410d-407e-a6ef-b7fe03aeeeef","originalAuthorName":"Dept.of Materials Science and Engineering"},{"authorName":"Central South University of Technology","id":"096050d6-a562-4c8b-a342-91de86874e29","originalAuthorName":"Central South University of Technology"},{"authorName":"Changsha 410083","id":"3afdeb78-29f8-49e1-8122-aa11e3d0fa94","originalAuthorName":"Changsha 410083"},{"authorName":"China","id":"cd0247b1-0dab-4b9f-a474-1438e04cf39b","originalAuthorName":"China"}],"categoryName":"|","doi":"","fpage":"410","id":"09ef932c-9082-4906-ab63-6e2f5915af3b","issue":"6","journal":{"abbrevTitle":"JSXBYWB","coverImgSrc":"journal/img/cover/amse.jpg","id":"49","issnPpub":"1006-7191","publisherId":"JSXBYWB","title":"金属学报(英文版)"},"keywords":[{"id":"b137efba-0665-41c2-8df0-a92c5de3d14b","keyword":"Cu-Zn-Al alloy","originalKeyword":"Cu-Zn-Al alloy"},{"id":"07c897f5-5a7e-4c09-9be6-fae664363a0b","keyword":"null","originalKeyword":"null"},{"id":"a7f09bf3-3cd9-46da-951a-95b33806fa52","keyword":"null","originalKeyword":"null"},{"id":"e957aa23-5744-48c8-bd90-44688b6cdc33","keyword":"null","originalKeyword":"null"}],"language":"en","publisherId":"1006-7191_1990_6_8","title":"STABILITIY OF MARTENSITE IN Cu-Zn-Al SHAPE MEMORY ALLOY AFTER DIRECT OR <span style=\"color:red\">STEPPED</span> QUENCHING","volume":"3","year":"1990"},{"abstractinfo":"The tube hydroforming process for manufacturing the tubular <span style=\"color:red\">part</span> with large perimeter difference was studied by means of experiments and FE simulation. It is an asymmetrical one and the expansion ratio is 70 percent. The <span style=\"color:red\">part</span> is successfully hydroformed by applying the useful wrinkles to accumulate sufficient metal in the area with large \nexpansion ratio. The thickness distribution is analyzed, and the maximum thinning \nratio of the <span style=\"color:red\">part</span> is 21.6 percent. It is shown from the experiment and simulation \nresults that the tubular <span style=\"color:red\">part</span> with large perimeter difference, long expansion area and \nasymmetrical shape can be obtained in one step, applying the useful wrinkles. Typical failure modes were analyzed.","authors":[{"authorName":"X.S. Wang","id":"403350a8-77c7-4661-99c3-8c8025ac3c14","originalAuthorName":"X.S. Wang"},{"authorName":" S.J. Yuan","id":"b52cf53e-a83c-4fc4-a872-af5c3a03b697","originalAuthorName":" S.J. Yuan"},{"authorName":" X.R. Huang","id":"6f78bb69-1ef7-4a9e-ba34-401dc87cd8e3","originalAuthorName":" X.R. Huang"},{"authorName":"null","id":"b06fae51-eceb-4c02-9424-5250e88745e7","originalAuthorName":"null"},{"authorName":"null","id":"aa6936e8-e16b-4d81-9f71-94be28bae3fb","originalAuthorName":"null"},{"authorName":"null","id":"bd72ce06-4290-4d13-9a2d-5e0c3ad650b6","originalAuthorName":"null"},{"authorName":"null","id":"f05f7b7a-b970-40c9-8201-a6772804f69c","originalAuthorName":"null"},{"authorName":"null","id":"0a8c2a3d-a98f-4c7b-a202-e9f0c0149ecd","originalAuthorName":"null"},{"authorName":"null","id":"51841859-78d6-40ac-9ad9-219e60b73398","originalAuthorName":"null"}],"categoryName":"|","doi":"","fpage":"133","id":"96f3f2a5-6281-4d06-8274-d693530faa6e","issue":"2","journal":{"abbrevTitle":"JSXBYWB","coverImgSrc":"journal/img/cover/amse.jpg","id":"49","issnPpub":"1006-7191","publisherId":"JSXBYWB","title":"金属学报(英文版)"},"keywords":[{"id":"504415f4-844b-4e3b-ad51-f9a79d6361aa","keyword":"Hydroforming","originalKeyword":"Hydroforming"},{"id":"accf9288-f2f1-42e3-a4a0-fee5a5ddcf22","keyword":"Large","originalKeyword":"Large"},{"id":"fdbf8d2b-59c0-4d26-9f40-dac75d9e9c80","keyword":"expansion","originalKeyword":"expansion"},{"id":"df231a47-ded6-4e68-83ac-90880554d4e6","keyword":"Useful","originalKeyword":"Useful"},{"id":"9d32bf4b-2e2e-4948-a55c-4e2a63dcd92c","keyword":"wrin","originalKeyword":"wrin"}],"language":"en","publisherId":"1006-7191_2008_2_1","title":"Research on Hydroforming Tubular <span style=\"color:red\">Part</span> with Large Perimeter Diffierence","volume":"21","year":"2008"},{"abstractinfo":"This paper introduces the results of numerical simulation of the MEBIOS sintering process according to the model presented in the first <span style=\"color:red\">part</span> of the study. The main objective of the second <span style=\"color:red\">part</span> is the elucidation of key factors influencing the process efficiency, particularly the sintering completeness, velocity of the heat wave propagation and maximum temperature achievable in the pellet during the wave propagation. Numerical results reveal that the mass fraction of coal, diameter of coal particles and air inlet velocity are of prime importance in determining efficiency of the MEBIOS sintering process.","authors":[{"authorName":"Sergey V Komarov","id":"4a788a68-8b1c-43e3-a7db-1df4aad1fcf9","originalAuthorName":"Sergey V Komarov"},{"authorName":"Hiroyuki Shibata","id":"f29615ac-1cac-463d-909e-ce21b635f067","originalAuthorName":"Hiroyuki Shibata"},{"authorName":"Naohito Hayashi","id":"ae80d177-ff30-4c67-9192-744573553eaf","originalAuthorName":"Naohito Hayashi"},{"authorName":"et al","id":"62ba6a62-4dd5-48de-9a1b-cba1330d12e2","originalAuthorName":"et al"}],"categoryName":"|","doi":"","fpage":"1","id":"d33bfb76-4fff-4766-ac4a-7b92ba1eb370","issue":"11","journal":{"abbrevTitle":"GTYJXBYWB","coverImgSrc":"journal/img/cover/GTYJXBEN.jpg","id":"1","issnPpub":"1006-706X","publisherId":"GTYJXBYWB","title":"钢铁研究学报(英文版)"},"keywords":[{"id":"46538a40-055d-433d-b647-e2adabc010f5","keyword":"sintering;MEBIOS process;heat propagation mechanism;numerical simulation;process efficiency","originalKeyword":"sintering;MEBIOS process;heat propagation mechanism;numerical simulation;process efficiency"}],"language":"en","publisherId":"1006-706X_2010_11_4","title":"Numerical and Experimental Investigation on Heat Propagation Through Composite Sinter Bed With Non-Uniform Voidage: <span style=\"color:red\">Part</span> II Prediction of Process Efficiency","volume":"17","year":"2010"},{"abstractinfo":"In <span style=\"color:red\">Part</span> II of this series of articles, the transient thermal model, which was introduced in <span style=\"color:red\">Part</span> I, is used to explore the effects of welding conditions on the heat generation and temperature. FSW of the 6061-T651 aluminum alloy is modeled to demonstrate the model. The following two steps are adopted to study the influence of welding conditions on the heat generation and temperature. First, the thermal model is used to compute the heat generation and temperature for different welding conditions, the calculated results are compared with the reported experimental temperature, and a good agreement is observed. Second, the analytical method is used to explore the approximate functions describing the effect of welding conditions on the heat generation and temperature. Based on the computed results, we discuss the relationship between the welding conditions, heat generation, temperature, and friction coefficient, and propose a relationship map between them for the first time at the end.","authors":[],"categoryName":"|","doi":"","fpage":"3229","id":"6baab61d-a3ce-46b4-8b04-3c27e7c403c7","issue":"10","journal":{"abbrevTitle":"MAMTAMAMS","id":"3c00bd0a-9b64-4f42-89c3-0e640883446c","issnPpub":"1073-5623","publisherId":"MAMTAMAMS","title":"Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science"},"keywords":[{"id":"63981ecd-3c4a-4e54-9832-3ff7ec291826","keyword":"mechanical-properties;aluminum-alloys;material flow;microstructure;parameters;heat;history;prediction;geometry;behavior","originalKeyword":"mechanical-properties;aluminum-alloys;material flow;microstructure;parameters;heat;history;prediction;geometry;behavior"}],"language":"en","publisherId":"1073-5623_2011_10_2","title":"A Transient Thermal Model for Friction Stir Weld. <span style=\"color:red\">Part</span> II: Effects of Weld Conditions","volume":"42A","year":"2011"},{"abstractinfo":"对不同铺层方式和铺设角度的复合材料层合板的热振动进行实验研究,实验结果给出了一些有益的结论,并有力证明了作者提出的非线性高阶层合理论和非线性热振动分析有限元算法(<span style=\"color:red\">Part</span> Ⅰ)[1]的正确性.","authors":[{"authorName":"杨自春","id":"9e226238-9784-4ff3-903a-178f18e4f019","originalAuthorName":"杨自春"}],"doi":"10.3321/j.issn:1000-3851.2000.02.027","fpage":"119","id":"e3341c20-06ef-4aa1-9433-b7e544fad081","issue":"2","journal":{"abbrevTitle":"FHCLXB","coverImgSrc":"journal/img/cover/FHCLXB.jpg","id":"26","issnPpub":"1000-3851","publisherId":"FHCLXB","title":"复合材料学报"},"keywords":[{"id":"300e3626-b7c9-43c6-9aca-f1cd231535a1","keyword":"复合材料层合板","originalKeyword":"复合材料层合板"},{"id":"dbd6852a-07c5-4ab2-9083-1108f112d0cc","keyword":"热振动实验","originalKeyword":"热振动实验"}],"language":"zh","publisherId":"fhclxb200002027","title":"受热复合材料层合板的非线性热振动--<span style=\"color:red\">Part</span> Ⅱ:实验研究","volume":"17","year":"2000"},{"abstractinfo":"A polymer space-holder method was used in this study to prepare porous coppers with low-to-medium porosity within the range 5-50%. This provides the possibility to control the pore size, distribution and structure. Optical microscopy and scanning electron microscopy (SEM) with energy dispersion spectrum (EDS) were utilized to characterize the porous samples. Two different sizes of copper powders, 5 and 45 mu m, were used to investigate the effect of raw materials powder size. Microstructure results have shown that there exist two different types of pore in the sintered samples: round-shaped macro-pores left over by the burnout of the space holder and irregular micro-pores or the intervals among metal powders. No matter which size powder was used, the size of the macro-pore falls into a range 200-500 mu m, but the pore structures are different in the two cases, interconnected or open pores for the 45 pm raw powders and closed pore for the 5 mu m powders. The sizes of the micro-pores among the copper powders in the two cases are also different, several microns for the 5 mu m powders and 10-20 mu m for the 45 mu m powders, though all micro-pores are interconnected for both powder sizes. From the viewpoint of pore structure, it is concluded that the 45 mu m powder is more appropriate for use to prepare the porous metal. In addition, the effect of the binder was also investigated. It is suggested that a binder that can be easily and completely removed should be used in order to induce the residue. This paper, as <span style=\"color:red\">Part</span> II of the publication, focuses on the fabrication of the porous samples where <span style=\"color:red\">Part</span> I [Lemons JE, editor. Quantitative characterization and performance of porous implants for hard tissue application. ASTM STP 953; 1985] has been published earlier for the mechanical properties of the material. (C) 2007 Elsevier Ltd. All rights reserved.","authors":[],"categoryName":"|","doi":"","fpage":"550","id":"c68607c6-03cc-4605-aa59-ffc2413659a6","issue":"3","journal":{"abbrevTitle":"IJOMS","id":"2eb3204a-12aa-4572-bedc-b3cf55d8968d","issnPpub":"0020-7403","publisherId":"IJOMS","title":"International Journal of Mechanical Sciences"},"keywords":[{"id":"92da5fcc-762c-4934-83b3-0753189612fc","keyword":"porous metal;powder metallurgy;microstructure;mechanical strength;mechanical-properties;corrosion behavior;implant materials;titanium;foams;manufacture;metal","originalKeyword":"porous metal;powder metallurgy;microstructure;mechanical strength;mechanical-properties;corrosion behavior;implant materials;titanium;foams;manufacture;metal"}],"language":"en","publisherId":"0020-7403_2008_3_1","title":"On the compressive behavior of sintered porous coppers with low-to-medium porosities - <span style=\"color:red\">Part</span> II: Preparation and microstructure","volume":"50","year":"2008"},{"abstractinfo":"Traditionally a rotary forging process is a kind of metal forming method where a conic upper die, whose axis is deviated an angle from the axis of machine, forges a billet continuously and partially to finish the whole deformation. For the rotary forging process simulation, more researches were focused on simulating the simple stage forming process with axisymmetric <span style=\"color:red\">part</span> geometry. Whereas in this paper, the upper die is not cone-shaped, and the billet is non-axisymmetric. So the movement of the punch  is much more complicated than ever. The 3D FEM simulation models for the preforming & final forming processes are set up after carefully studying the complicated movement pattern. Deform-3D is used to simulate the material flow, and the boundary nodal resisting forces calculated by the final stage process simulation is used to analyze the final forming die strength. The CAE analysis of the die shows that the design of the final forming die is not reasonable with lower pre-stress which is easy to crack at the critical corners. An optimum die design is also provided with higher pre-stress, and verified by CAE analysis.","authors":[{"authorName":"H. Tian","id":"f0e193c4-db7c-41d3-9df8-05e1a43293cb","originalAuthorName":"H. Tian"},{"authorName":" J. Wang","id":"62b1a4c9-6260-4d1e-ba1d-8442b3f0501e","originalAuthorName":" J. Wang"},{"authorName":" W.P. Dong","id":"c6e9ad0e-cbcd-4c92-b5a1-e5efc034e7d0","originalAuthorName":" W.P. Dong"},{"authorName":" J. Chen","id":"93a4283b-08c1-4f5d-9935-81d404625184","originalAuthorName":" J. Chen"},{"authorName":" Z. Zhao ","id":"776700ac-f84a-4e5d-bbb8-b48c8b8f4297","originalAuthorName":" Z. Zhao "},{"authorName":"  G.M. Wu","id":"a5306db4-5a17-460e-9e3f-54742c6a0ecb","originalAuthorName":"  G.M. Wu"}],"categoryName":"|","doi":"","fpage":"627","id":"d741943f-d9fd-4854-933c-8435f151675a","issue":"5","journal":{"abbrevTitle":"JSXBYWB","coverImgSrc":"journal/img/cover/amse.jpg","id":"49","issnPpub":"1006-7191","publisherId":"JSXBYWB","title":"金属学报(英文版)"},"keywords":[{"id":"0419e5e8-9b0a-4c9b-a4ce-23c603de9a38","keyword":"numerical simulation","originalKeyword":"numerical simulation"},{"id":"d1ef35d9-a1f2-4be5-8622-10b1cf51b2e7","keyword":"null","originalKeyword":"null"},{"id":"dd9e6f81-ae79-4e7d-bc87-16ead6852e77","keyword":"null","originalKeyword":"null"}],"language":"en","publisherId":"1006-7191_2005_5_2","title":"STUDY ON THE NUMERICAL SIMULATION OF MULTI-STAGE ROTARY FORGING OF A NON-AXISYMMETRIC <span style=\"color:red\">PART</span> AND THE CAE ANALYSIS OF THE DIE STRENGTH","volume":"18","year":"2005"},{"abstractinfo":"The energy dissipation caused by the viscous force has great effects on the flow property of semi-solid metal during rheological processes such as slurry preparing, delivering and cavity filling. Experimental results in this paper indicate that the viscous friction between semi-solid metal and pipe wall, the collisions among the solid particles, and the liquid flow around particles are the three main types of energy dissipation. On the basis of the hydromechanics, the energy dissipation calculation model is built. It is demonstrated that the micro-structural parameters such as effective solid fraction, particle size and shape, and flow parameters such as the mean velocity, the fluctuant velocity of particles and the relative velocity between the fluid and solid phase, affect the energy dissipation of semi-solid metal.<span style=\"color:red\">Part</span>Ⅱ：This study investigates the rheological behavior of semi-solid metal. An analytical model of apparent viscosity was built up based on analysis of energy dissipation during rheological processes such as slurry preparing, delivering and model filling. The rheological behavior of SSM slurries was described by an analytical model in terms of micro structural parameters, which consist of effective solid fraction, particle size and shape, and flow parameters such as mean velocity, fluctuation velocity and relative velocity between liquid and solid phase. The model was verified in the experiment of A356 alloys with a coaxial double-bucket rheometer. And the maximum relative error between the theoretical value and measured value is less than 10%. The results of experiment and theoretical calculation also indicate that the micro structural parameters and flow parameters are two major factors that affect the apparent viscosity of semi-solid alloys, and fluctuation velocity and relative velocity between liquid and solid phase are the key factors to distinguish between steady and transient rheological behaviors.","authors":[{"authorName":"Wen LIU","id":"67350f39-4df9-4a3b-a800-d86454f4e6df","originalAuthorName":"Wen LIU"}],"categoryName":"|","doi":"","fpage":"342","id":"5e0b7b6a-f542-4ba5-9a2a-4dc806001687","issue":"3","journal":{"abbrevTitle":"CLKXJSY","coverImgSrc":"journal/img/cover/JMST.jpg","id":"11","issnPpub":"1005-0302 ","publisherId":"CLKXJSY","title":"材料科学技术（英文）"},"keywords":[{"id":"db8ed4f2-1ed8-4631-b0ed-e71ac99ef074","keyword":"Semi-solid metal","originalKeyword":"Semi-solid metal"},{"id":"5fb49217-926b-4b07-853d-8ea1647ed621","keyword":"能量耗散","originalKeyword":"能量耗散"},{"id":"3991cadc-a2c6-4d04-81a8-4b8fb27062c4","keyword":"流变","originalKeyword":"流变"},{"id":"7a5712ea-2e0b-47e9-9392-5f3385079740","keyword":"表观粘度","originalKeyword":"表观粘度"},{"id":"46194c88-cc32-4166-b04a-9c7c8b4a3352","keyword":"模型","originalKeyword":"模型"}],"language":"en","publisherId":"1005-0302_2007_3_19","title":"Energy Dissipation and Apparent Viscosity of Semi-solid Metal during Rheological Processes <span style=\"color:red\">Part</span> I: Energy Dissipation","volume":"23","year":"2007"}],"totalpage":32,"totalrecord":318}