Contribution to digital representation of materials subjected to thermomechanical processing
Madej, L., Gawad, J., Hodgson, P. D. and Pietrzyk, M. 2007, Contribution to digital representation of materials subjected to thermomechanical processing, in MS&T '07 : Proceedings of the Materials Science and Technology Conference and Exhibition : Exploring Styructure, Processing and Applications Across Multiple Materials Systems, Curran Associates, Red Hook, N.Y., pp. 1677-1688.
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Title
Contribution to digital representation of materials subjected to thermomechanical processing
MS&T '07 : Proceedings of the Materials Science and Technology Conference and Exhibition : Exploring Styructure, Processing and Applications Across Multiple Materials Systems
Publication date
2007
Series
Exploring Structure, Processing and Applications Across Multiple Materials Systems
Start page
1677
End page
1688
Total pages
12
Publisher
Curran Associates
Place of publication
Red Hook, N.Y.
Summary
Development of software tools, which allow connection between phenomena occurring in materials in various length scales, is presented in the paper. Multiscale CAFE approach, which combines cellular automata (CA) and finite element (FE) methods, is selected for modeling. In this approach FE method describes material behavior in the macro scale, while CA method simulates micro and mezo scale phenomena. Capability of accounting for these phenomena, which are either stochastic or discontinuous or both, is the main advantage of the cellular automata. The objective of the present work is to improve qualitative and quantitative accuracy of the model. Two phenomena are considered. Micro shear band initiation and propagation is the first and recrystallization is the second. The main emphasis is put on improvement of the transition rules, which describe the state of the material at the grain level. Beyond this, the common features of both models are distinguished to develop better numerical tool, which will allow to combine CA with the FE simulations of real processes. Finally, results of the CAFE modeling of the polycrystalline microstructure deformation and recrystallization are presented.
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