Thermal Contraction of AA5182 for Prediction of Ingot Distortions


Article Preview

Shape distortions and hot cracking during casting are strongly related to thermal contraction during and after solidification. The understanding of this phenomenon is crucial in designing defect-free cast products and in numerical simulation of their thermomechanical behavior. This paper presents the results of experimental and numerical simulation work on the thermal contraction during and after solidification of a commercial AA5182 alloy. In the specially developed experimental set-up, the contraction is measured simultaneously with temperature while the material solidifies and cools down in the solid state. An elasto-viscoplastic constitutive model fitted to experimental data is used in finite element simulations of the contraction process. The implementation of thermal contraction data for ingot distortion during the start-up phase of casting is also included. The results show that the contraction starts at a certain temperature in the nonequilibrium solidification range, close to the non-equilibrium solidus. Good agreement is found between simulation and experimental results.



Key Engineering Materials (Volumes 306-308)

Edited by:

Ichsan Setya Putra and Djoko Suharto






Suyitno et al., "Thermal Contraction of AA5182 for Prediction of Ingot Distortions", Key Engineering Materials, Vols. 306-308, pp. 977-982, 2006

Online since:

March 2006




[1] J. Campbell: Castings, Butterworth Heinemann, Oxford, United Kingdom, (1991).

[2] J.H. Kim, J.W. Choi, J.P. Choi, C.H. Lee, E.P. Yoon: J. Mat. Sci. Let. Vol. 19 (2000), p.1395.

[3] D.G. Eskin, J. Zuidema, Jr., L. Katgerman: Int. J. Cast Metals Res. Vol. 14 (2002), p.217.

[4] I.I. Novikov, Hot Shortness of Non-Ferrous Metals and Alloys, Nauka, Moscow, (1966).

[5] J.D. James, J.A. Spittle, S.G.R. Brown, R.W. Evans: Meas. Sci. Technol. Vol. 12 (2001), p.1.

[6] Suyitno, L. Katgerman, A. Burghardt: Proc. ASME Heat Transfer Division Vol. 5 (2002), p.147.

[7] W.M. Van Haaften. Thermophysical Properties of Al Alloys, Internal Report, Delft University of Technology, The Netherlands, (1997).

[8] W.M. van Haaften, PhD Thesis, Delft University of Technology, Delft, The Netherlands, (2002).

[9] D.G. Eskin, Suyitno, J. Mooney, L. Katgerman: Metall. Mater. Trans. A Vol. 35 (2004), p.1325.

[10] G.A. Korolkov, G.M. Kuznetsov: Soviet Cast. Tech. No. 6 (1990), p.1.

[11] ASM Handbook. Properties and Selection: Nonferrous Alloys and Special Purpose Materials, ASM International, (1997).

In order to see related information, you need to Login.