Engineering Transactions, 47, 3-4, pp. 339–349, 1999
10.24423/engtrans.636.1999

Material Model of the AlCu2SiMn Alloy Under Hot Plastic Forming

A. Gontarz
Technical University of Lublin
Poland

Z. Pater
Technical University of Lublin
Poland

The results of the torsion tests investigation of AlCu$_2$MnSi aluminium alloy are presented in this paper. The experiments were carried out at the temperature range between 350°C and 500°C and at a twist rate of 8.3 rpm, 750 rpm and 1500 rpm. Various ways of interpretation of the torsion test were shown. A comparison between the results of torsion and compression tests was done, as well. Using the results of this comparison, the Tresca hypothesis was chosen for the calculation of both the flow stress and of the equivalent strain. The flow curves and the limit strain curves were obtained for investigated conditions. Moreover, the range of hot forming temperatures of the analysed alloy was estimated. The obtained results were used for constructing the material model of AlCu$_2$SiMn alloy. This model was used for the numerical simulation of the cross-wedge rolling process [7].
Full Text: PDF
Copyright © Polish Academy of Sciences & Institute of Fundamental Technological Research (IPPT PAN).

References

T. SPITTEL, M. SPITTEL and J. SUCHANEK, Untersuchung der thermischen Verhältnisse im Wärmtorsionsversuch, Neue Hütte, 31, 6, 233–238, 1986.

T. SPITTEL, M. SPITTEL and H. TEICHERT, Umformeigenschaften von Aluminium und Aluminiumlegierungen, Aluminium, 70, 1/2, 68–76, 1994.

A.M. GAŁKIN, Plastometer tests of metals and alloys, Ed. Technical University of Częstochowa, Częstochowa 1990.

E. HADASIK, A. PLOCH, I. SCHINDLER and B. MACHULEC, Utilization of computer techniques for plastometer research, Proc. Ill Conference KomPlasTech'96, 8–10 January 1996 Koninki, 41–47.

I. SAUNDERS, J. NUTTING, Deformation of metals to high strains using combination of torsion and compression, Metal Science, 18, 571–575, 1984.

A. FORCELLESE, F. GABRIELLI, F. MICARI and O. ZURLA, Computer simulation of metal flow in the hot upsetting of a high-strength aluminium alloy, Journal of Materials Processing Technology, 39, 83–99, 1993.

W. WEROŃSKI, A. GONTARZ and Z. PATER, Forecasting of possible cross-wedge rolling of the AlCu2SiMn alloy, Conference Proceedings 2 International Conference on Industrial Tools, Maribor-Rogaska Slatina, Slovenia, 1–5, 1999.




DOI: 10.24423/engtrans.636.1999