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APPLICATIONS OF PHYSICAL SIMULATION IN THE DEVELOPMENT OF HOT WORKING PROCESSES 被引量:1
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作者 L. P. Karjalainen (Department of Mechanical Engineering, University of Oulu, Oulu, Finland) 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2000年第1期291-300,共10页
Modelling has become a more and more valuable tool in the design, control and development of steel processing. Empirical regression equations, physically based approachs, artificial neural networks and hybrid models a... Modelling has become a more and more valuable tool in the design, control and development of steel processing. Empirical regression equations, physically based approachs, artificial neural networks and hybrid models are being theied in computer modelling. In all cases, relevant data are necessary, which can be most economically obtained by physical simulation. Physical simulation with a Gleeble simulator has been used in a large number of tasks at the University of Oulu for ten years in cooperotion with the Finnish metals industry. Some examples of these will be described and discussed below, such as the optimization of the recrystallization controlled rolling process, the improvement of the hot strength model for the control of coiling tension and the optimization of continuous strip annealing schedules.Finally,brief remarks will be then on a couple of projects now under way. 展开更多
关键词 physical simulation hot working recrystallization phase transformation continuous annealing
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Modeling of recrystallization behaviour of AA6xxx aluminum alloy during extrusion process
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作者 Marco NEGOZIO Antonio SEGATORI +3 位作者 Riccardo PELACCIA Barbara REGGIANI Sara Di DONATO Lorenzo DONATI 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS 2024年第10期3170-3184,共15页
An innovative approach was introduced for the development of a AA6063 recrystallization model.This method incorporated a regression-based technique for the determination of material constants and introduced novel equa... An innovative approach was introduced for the development of a AA6063 recrystallization model.This method incorporated a regression-based technique for the determination of material constants and introduced novel equations for assessing the grain size evolution.Calibration and validation of this methodology involved a combination of experimentally acquired microstructural data from the extrusion of three different AA6063 profiles and results from the simulation using the Qform Extrusion UK finite element code.The outcomes proved the agreement between experimental findings and numerical prediction of the microstructural evolution.The trend of the grain size variation based on different process parameters was accurately simulated,both after dynamic and static recrystallization,with an error of less than 25% in almost the whole sampling computations. 展开更多
关键词 recrystallization simulation aluminum alloy extrusion finite element method microstructure prediction
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