Affiliation:
1. Graz University of Technology
2. University of Leoben
3. University of Nis
Abstract
Process parameters in aluminium extrusion technology are key points that influence product properties. The precipitation hardening aluminium alloy 6082 is investigated according to different process conditions and the influence onto the final microstructure is simulated as well as experimentally verified. A physical microstructure model based on three dislocation types and three nucleation sites for recrystallization is implemented into the commercial Finite Element package FORGE 2008 to calculate both the microstructure evolution during the extrusion process as well as the recrystallized fraction after the process. The precipitation kinetics during homogenization was investigated using the thermodynamic calculation software MatCalc since the main nucleation mechanism for recrystallization is particle stimulated. The experimental validation was done by miniature extrusion tests and the microstructure was investigated metallographically and by EBSD measurements.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Reference11 articles.
1. X. Duan, T. Sheppard, Simulation and control of microstructure evolution during hot extrusion aluminium alloys, Materials Science and Engineering, vol. A351 (2003) pp.282-292.
2. C. Poletti, P. Sherstnev, M. Schöbel, C. Sommitsch, Substructure development of AA6082 during hot deformation, Aluminium Alloys, Their Physical and Mechanical Properties, J. Hirsch et al. (Eds. ), DGM, Wiley-VCH, vol. 1 (2008) pp.691-697.
3. X. Duan, T. Sheppard, Computation of substructural strengthening by the integration of metallurgical models into the finite element code, Computational Materials Science, vol. 27 (2003) pp.250-258.
4. T. Sheppard and X. Duan, Modelling of static recrystallisation by combining finite element methods with empirical models,. Journal of Materials Processing Technology, vol. 130-131 (2002) pp.250-253.
5. F. Krumphals, I. Flitta, S. Mitsche, T. Wlanis, A. Jahn, C. Sommitsch, Comparison of experimental and Finite Element Modelling of the extrusion of AA6082 on both tools and extrudate as a function of process parameters, Proc. 11th International Esaform Conference on Material Forming, Lyon, France (2008).
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