Paper Title:
Thermal Contraction of AA5182 for Prediction of Ingot Distortions
  Abstract

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.

  Info
Periodical
Key Engineering Materials (Volumes 306-308)
Edited by
Ichsan Setya Putra and Djoko Suharto
Pages
977-982
DOI
10.4028/www.scientific.net/KEM.306-308.977
Citation
Suyitno, D. G. Eskin, L. Katgerman, "Thermal Contraction of AA5182 for Prediction of Ingot Distortions", Key Engineering Materials, Vols. 306-308, pp. 977-982, 2006
Online since
March 2006
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Price
$32.00
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