Through process modelling of commercial aluminium sheet
The objective of this paper is to give an overview of the complete through-process modeling of aluminium sheet production. Special emphasis is given on the crystallographic texture evolution. The process is modeled from the rolling process up to the final annealing of the samples applying various models. Throughout the process, the state of the material is represented by physically meaningful state variables, like the dislocation density, the solute concentration, the particle distribution and the orientation distribution of the grains. For rolling, three models are coupled: a special Finite Element Model (FEM), a statistical model for work hardening and recovery, and a simple texture evolution model. In post-processing of rolling, the texture evolution is calculated more accurately by the deformation texture model GIA (Grain InterAction). Recrystallisation in subsequent heat treatments is simulated by a statistical analytical recrystallization texture model (StaRT), where the spectrum of recrystallization nuclei are modeled with ReNuc, which is a collection of several sub-models describing different nucleation mechanisms. The driving force for recrystallisation is the dislocation density, which is taken from the preceding rolling simulation step.The recrystallized texture, in turn, is then used for the subsequent deformation process. In this manner, a full through process simulation is accomplished. The so modeled material properties have been validated by comparison with experimental data. This comparison has confirmed the good quality of prediction by the models used.
V. Mohles L. Neumann R. Kopp G. Hirt M. Crumbach C. Sch(a)fer M. Schneider E. Jannot G.Gottstein
Institut für Metallkunde und Metallphysik, RWTH Aachen University, 52056 Aachen, Germany Institut für Bildsame Formgebung, RWTH Aachen University, 52056 Aachen, Germany;SMS DEMAG AG, Eduard Institut für Bildsame Formgebung, RWTH Aachen University, 52056 Aachen, Germany NovelisTechnology AG, Badische Bahnhofstr. 16, 8212 Neuhausen, Switzerland
国际会议
辽宁
英文
2006-10-21（万方平台首次上网日期，不代表论文的发表时间）