{"currentpage":1,"firstResult":0,"maxresult":10,"pagecode":5,"pageindex":{"endPagecode":5,"startPagecode":1},"records":[{"abstractinfo":"The interaction between thermomechanical parameters and microstructure evolution is so intense that it must be considered during the finite element method (FEM) simulation of the hot plastic working process, for materials that are difficult to deform. Taking the microstructure evolution into account, a novel type of constitutive relationship has been put forward for the IN718 alloy. The microstructure evolution model was first established for the dominant microstructure evolution processes. Then the microstructure evolution models and the method to determine the local flow stress of the corresponding microstructure for current thermomechanical parameters and deformation history were presented. Once the local flow stresses of different structures and their volume contributions were defined, the apparent flow stress of the material could be determined as the weighted sum of the local flow stresses and volume contributions. To validate the proposed method, a thermoviscoplastics and microstructure evolution coupled analysis for a forging process of a critical IN718 disk forging was performed. The predicting results were in close agreement with the experimental data.","authors":[{"authorName":"D. Liu","id":"e76aeabe-27b0-43b8-a2e9-9204fcbed723","originalAuthorName":"D. Liu"},{"authorName":" Y.H. Yang","id":"dc351229-fb55-47af-96ee-4e24d6cd821b","originalAuthorName":" Y.H. Yang"},{"authorName":" J. Geng","id":"a98ea6db-b393-428b-b866-ec59566f8eac","originalAuthorName":" J. Geng"},{"authorName":" Z.J. Luo","id":"172f2b10-f47d-4ae9-b2e8-e20a1acadb40","originalAuthorName":" Z.J. Luo"},{"authorName":"null","id":"e756b714-d363-498e-938b-d18e06e9d27e","originalAuthorName":"null"},{"authorName":"null","id":"163863ad-9230-4a4b-a0d6-54352a172006","originalAuthorName":"null"}],"categoryName":"|","doi":"","fpage":"373","id":"a975b071-5a82-44f2-b038-de25f16656f2","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":"9550bb35-7601-4eae-a202-d21453ade4e2","keyword":"constitutive relationship","originalKeyword":"constitutive relationship"},{"id":"eccf1ce1-b9d0-4a45-b69b-0357190eef65","keyword":"null","originalKeyword":"null"},{"id":"5ce3d4c8-9272-4d58-98e7-2b977db3734a","keyword":"null","originalKeyword":"null"}],"language":"en","publisherId":"1006-7191_2007_5_1","title":"Constitutive Relationship of IN718 Alloy for Thermoviscoplastic and Microstructure Evolution Coupled Analysis","volume":"20","year":"2007"},{"abstractinfo":"The thermomechanical analysis (TMA) of Cu0.5Tl0.5Ba2Ca2-xRxCu3O10-δ, where R=Pr and La, with 0.0≤x≤0.15, was carried out in temperature range from 450 to 1145 K. The samples were prepared by single-step solid state reaction technique. The prepared samples were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The superconductivity of the prepared samples was investigated by electrical resistivity measurement. The results showed that low substitution content enhanced the (Cu0.5Tl0.5)-1223 phase formation, while the higher substitution content degraded this phase. The higher superconducting transition temperatures Tc were found to be 114 K and 109 K at x= 0.025 for Pr- and La-substitutions, respectively. The average linear thermal expansion coefficient increased as x increased, while the shrinkage temperature decreased as x increased. Those results were emphasized by porosity and Vickers microhardness calculations. Debye temperature θD was calculated from the linear thermal expansion coefficient data and correlated to Tc to estimate the electron-phonon coupling λep.","authors":[{"authorName":"A.I. Abou Aly","id":"bc78cfac-092d-47c6-9e58-1db7a1e0c08c","originalAuthorName":"A.I. Abou Aly"}],"categoryName":"|","doi":"","fpage":"169","id":"3564a2bd-3bae-4a10-84d6-f8523a54692d","issue":"2","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":"94aac363-9c4f-4806-bf55-80ed88c94635","keyword":"(Cu0.5Tl0.5)-1223","originalKeyword":"(Cu0.5Tl0.5)-1223"}],"language":"en","publisherId":"1005-0302_2012_2_7","title":"Thermomechanical Analysis of (Cu0.5Tl0.5)-1223 Substituted by Pr and La","volume":"28","year":"2012"},{"abstractinfo":"Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) has been widely adopted for the direct multi-elemental analysis with high sensitivity. Especially analysis of fine ceramics by LA-ICP-MS without time-consuming sample decomposition process has been one of the most expecting application field. Small additive elements in MgO powders were analyzed by LA-ICP-MS. For precise and accurate analysis influence of carrier gas (Ar or He) was presented by the signal intensities of ICP-MS, relative standard deviation of signal intensities and ablated particle size distribution. Ablated particles were collected and analyzed by scanning electron microscopy (SEM) to investigate the particle size distribution, and the ablated sample surface was examined by camscope. In He gas atmosphere, the signal was more stable than in Ar gas atmosphere. The signal intensity was higher in Ar than in He. Examination of ablated particles and sample surface reveals that more particles were generated in Ar atmosphere and the distribution of particle size was larger.","authors":[{"authorName":"J.S. Lee","id":"46ba7844-677c-430c-aec6-e487fd2a3ff8","originalAuthorName":"J.S. Lee"}],"categoryName":"|","doi":"","fpage":"333","id":"43dbc211-1e0c-493b-955a-d4a5b2c80c6a","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":"8455f007-b68a-413d-8346-27ca0d5f6f7a","keyword":"Laser ablation","originalKeyword":"Laser ablation"}],"language":"en","publisherId":"1005-0302_2009_3_10","title":"Influence of Carrier Gas on Analysis of MgO Powders by Laser Ablation Inductively Coupled Plasma Mass Spectrometry","volume":"25","year":"2009"},{"abstractinfo":"The inertia friction welding process is a non-linear process because of the interaction between the temperature field and the material properties as well as the friction force. A thermo-mechanical coupled finite element model is established to simulate the temperature field of this process. The transient temperature distribution during the inertia friction welding process of two similar workpieces of GH4169 alloy is calculated. The region of the circular cross-section of the workpiece is divided into a number of four-nodded isoparametric elements. In this model, the temperature dependent thermal properties, time dependent heat inputs, contact condition of welding interface, and deformation of the flash were considered. At the same time, the convection and radiation heat losses at the surface of the workpieces were also considered. A temperature data acquisition system was developed. The temperature at some position near the welding interface was measured using this system. The calculated temperature agrees well with the experimental data. The deformation of the flash and the factor affecting the temperature distribution at the welding interface are also discussed.","authors":[{"authorName":"L.W. Zhang","id":"5560b49c-5c6b-470c-856c-eeac81005ca4","originalAuthorName":"L.W. Zhang"},{"authorName":" J.B. Pei","id":"54acf2a5-4856-4084-98b0-9fbe7ed11d27","originalAuthorName":" J.B. Pei"},{"authorName":" Q.Z. Zhang","id":"053b98a1-169b-40fa-827d-204c97820319","originalAuthorName":" Q.Z. Zhang"},{"authorName":" C.D. Liu","id":"2fcd134e-6b38-425c-b991-ab359e2f0604","originalAuthorName":" C.D. Liu"}],"categoryName":"|","doi":"","fpage":"301","id":"c95fff8d-f22b-41c8-8e04-fed16afa2955","issue":"4","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":"35785167-5209-4ddf-8d16-7ab9671aa405","keyword":"inertia friction welding","originalKeyword":"inertia friction welding"},{"id":"7be7b4b3-815d-4ebf-97d6-1c68089d1b59","keyword":"null","originalKeyword":"null"},{"id":"7e3f1aaa-0f3c-4645-9ebc-bb9fc5d6d9a1","keyword":"null","originalKeyword":"null"}],"language":"en","publisherId":"1006-7191_2007_4_12","title":"The Coupled FEM Analysis of the Transient Temperature Field During Inertia Friction Welding of GH4169 Alloy","volume":"20","year":"2007"},{"abstractinfo":"Two different types of experimental techniques to perform non-isothermal, uniaxial and biaxial fatigue tests were described. A new miniaturised electrothermalmechanical test rig was presented and discussed. It enables testing of small specimens under complex thermomechanical loading conditions. In order to cope with the simulation of well defined biaxial proportional and non-proportional loadings with in-phase and out-of-phase superposition of thermal loads a cruciform biaxial fatigue testing machine has been developed. Special design features of both machines, and the specimens tested, as well as typical test results were discussed.","authors":[{"authorName":"R.Bardenheier","id":"da09429a-59f3-4975-aea9-a8bb78da426d","originalAuthorName":"R.Bardenheier"},{"authorName":" G.Rogers","id":"7ae835d1-1108-4627-9c3e-89d55bb068ae","originalAuthorName":" G.Rogers"}],"categoryName":"|","doi":"","fpage":"400","id":"fc677953-6038-4e97-84f5-3c1a2393c2f8","issue":"4","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":"4bab155e-7cf6-432b-8048-41099f82109d","keyword":"thermomechanical fatigue","originalKeyword":"thermomechanical fatigue"},{"id":"85daf3a2-7669-4b28-bd96-4db5889385f8","keyword":"null","originalKeyword":"null"},{"id":"e60b2503-1c67-4eaf-8fc5-be107babe999","keyword":"null","originalKeyword":"null"}],"language":"en","publisherId":"1006-7191_2004_4_7","title":"SIMULATION OF COMPLEX THERMOMECHANICAL FATIGUE","volume":"17","year":"2004"},{"abstractinfo":"The thermomechanical behavior of the thin, growing shell during the early stages of solidification in the continuous casting mold is very important to the ultimate quality of the final billet. A two-dimensional, transient finite element model has been developed to treat the heat flow and deformation of solidifying shell in the continuous casting billet mold as coupled phenomena. The major application of the model is to predict the extent of the gap between the mold and the shell, and focus on the influence of mold taper on the thermomechanical behavior of the steel billet to help understand the formation of off-corner cracks and breakouts in the solidifying shell. The calculations indicate that the gap is initially formed at the corner of the billet, where heat transfer is greatly reduced. Insufficient mold taper contributes to a hot spot in the off-corner region, which corresponds to the thinnest shell thickness. Meanwhile, the solidifying front along the diagonal of the billet is subjected to an excessive mechanical strain, which causes the off-corner cracks and even the breakouts.","authors":[{"authorName":"Engang WANG","id":"6f777b1d-7bdf-4fb2-9fe2-9482f7ffd6f5","originalAuthorName":"Engang WANG"},{"authorName":" Jicheng HE","id":"a7b6a2f2-d5ec-47a1-993c-4014cd0e0604","originalAuthorName":" Jicheng HE"}],"categoryName":"|","doi":"","fpage":"8","id":"17225891-16a9-471f-888a-58b1daab57ad","issue":"S1","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":[],"language":"en","publisherId":"1005-0302_2001_S1_26","title":"Finite element numerical simulation for influence of mold taper on thermomechanical behavior of steel billet in continuous casting process","volume":"17","year":"2001"},{"abstractinfo":"As shape memory alloys (SMAs) gain popularity as high energy density actuators, one characteristic that becomes particularly important is the thermomechanical transformation fatigue life, in addition to maximum transformation strain and stability of actuation cycles. In this paper, a novel test frame design and testing protocol are discussed, for investigating the thermally activated transformation fatigue characteristics of SMAs under various applied loads for both complete and partial phase transformation. A Ni(50)Ti(40)Cu(10) (at.%) SMA was chosen for this investigation and the effects of various heat treatments on the transformation temperatures and the transformation fatigue lives of actuators were studied. For selected heat treatments, the evolution of recoverable and irrecoverable strains up to failure under different applied stress levels was studied in detail. The influence of complete and partial transformation on the fatigue life is also presented. The irrecoverable strain accumulation as a function of the number of cycles to failure for different stress levels is presented by a relationship similar to the Manson-Coffin law for both partial and complete transformations.","authors":[],"categoryName":"|","doi":"","fpage":"","id":"410d4a6d-0c77-45dd-9ddb-9bbcdf465665","issue":"8","journal":{"abbrevTitle":"SM&S","id":"0a1e3544-fb13-4ad0-88c0-a2b9a46c2324","issnPpub":"0964-1726","publisherId":"SM&S","title":"Smart Materials & Structures"},"keywords":[{"id":"a62623bc-4d01-476b-90e5-e330470d0137","keyword":"cyclic deformation;part ii;niti;transformation;behavior;tini;failure;wires;life","originalKeyword":"cyclic deformation;part ii;niti;transformation;behavior;tini;failure;wires;life"}],"language":"en","publisherId":"0964-1726_2009_8_1","title":"Thermomechanical fatigue of shape memory alloys","volume":"18","year":"2009"},{"abstractinfo":"","authors":[{"authorName":"","id":"7e3e83c5-d208-4c52-96ed-1484dcfe6f52","originalAuthorName":""},{"authorName":"","id":"83677299-6c15-484a-8e69-4521c190d056","originalAuthorName":""},{"authorName":"","id":"0263a7a8-967a-40af-971e-029f90fdf0bc","originalAuthorName":""}],"doi":"","fpage":"42","id":"798f53e2-c4c4-4b4b-aa37-3f1cc6f39c32","issue":"4","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":"01796b44-721a-4515-931c-8ef120668376","keyword":"","originalKeyword":""}],"language":"zh","publisherId":"gtyjxb-e200804009","title":"Coupling Thermomechanical and Microstructural FE Analysis in Plate Rolling Process","volume":"15","year":"2008"},{"abstractinfo":"Using threedimensional rigidviscoplastic finite element method (FEM), a coupling multivariable numerical simulation model for steel plate rolling has been established based on the physical metallurgy microstructural evolution rule and experiential equations. The effects of reduction, deformation temperature, and rolling speed on the deformation parameters and microstructure in plate rolling were investigated using the model. After a typical rolling process of steel plate 16Mn is simulated, the strain, temperature, and microstructure distributions are presented, as well as the ferrite grain transformation during the period of cooling. By comparing the calculated ferrite grain sizes with measured ones, the model is validated.","authors":[{"authorName":"LI Xuetong","id":"e0fbcab2-5eed-4a6c-ae57-804cef426020","originalAuthorName":"LI Xuetong"},{"authorName":"WANG Minting","id":"b51a7916-7472-4915-a385-ddc83b1ca5ab","originalAuthorName":"WANG Minting"},{"authorName":"DU Fengshan","id":"ebb8353a-d827-4ab5-b884-3f7ec0b89996","originalAuthorName":"DU Fengshan"}],"categoryName":"|","doi":"","fpage":"42","id":"abdf0a0b-dd99-47d7-a646-1983e05c77fe","issue":"4","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":"669ad470-2be3-4b79-8efd-a45b24de0241","keyword":"hot rolling;plate;FEM;microstructure;coupling","originalKeyword":"hot rolling;plate;FEM;microstructure;coupling"}],"language":"en","publisherId":"1006-706X_2008_4_5","title":"Coupling Thermomechanical and Microstructural FE Analysis in Plate Rolling Process","volume":"15","year":"2008"},{"abstractinfo":"The paper studied the relationship between microstructure and shape recovery characteristics by using colored microstructure analysis under polarized light on the thermomechanical cycled CuAINi single crystals. The two-way shape memory effect in quenched thin bar resulted from the preferential formation/extinction of martensite variant due to the internal quench stress, and the variant was formed at an angle of about 45 deg. with the tension direction ([001] of the beta phase). Initial thermomechanical cycling under relatively low stress single variant stress-induced martensite was formed at an angle of 45 deg. with the tension and its morphology was a lath of parallel twins. More than one group of variants were formed after several training cycles and such variants also caused tilting of some thermally formed accommodated martensite. By overheating the trained sample containing stabilized multi-variants of stress-induced martensite, very coarse martensite structure with a strong asymmetry was produced, which caused the reverse two-way shape memory effect.","authors":[{"authorName":"Qingfu CHEN","id":"c6f38434-1692-47c3-9477-56307fa68c9b","originalAuthorName":"Qingfu CHEN"},{"authorName":" Wei CAI","id":"d32f29b5-cde3-4176-a81d-3c3936cf638f","originalAuthorName":" Wei CAI"},{"authorName":" Liancheng ZHAO","id":"dd14883c-eac6-4a1f-a63d-f47d3a291772","originalAuthorName":" Liancheng ZHAO"}],"categoryName":"|","doi":"","fpage":"485","id":"3e9ba994-d536-48e1-a9ca-08ebbe3f9603","issue":"5","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":[],"language":"en","publisherId":"1005-0302_2001_5_11","title":"Relationship between colored microstructure under polarized light and shape recovery characteristics on the thermomechanical cycled CuAlNi single crystals","volume":"17","year":"2001"}],"totalpage":279,"totalrecord":2783}