Thermal Contraction of AA5182 for Prediction of Ingot Distortions

Suyitno; D.G. Eskin; L. Katgerman

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Thermal Contraction of AA5182 for Prediction of Ingot Distortions

机译：Thermal Contraction of AA5182 for Prediction of Ingot Distortions

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摘要

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 non-equilibrium solidification range, close to the non-equilibrium solidus. Good agreement is found between simulation and experimental results.

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来源
《Key engineering materials》 |2006年第2期|977-982|共6页
作者
Suyitno; D.G. Eskin; L. Katgerman;
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作者单位

Laboratory of Materials Science and Engineering, Delft University of Technology Rotterdamseweg 137, 2628 AL, Delft, The Netherlands;

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原文格式 PDF
正文语种英语
中图分类工程基础科学;
关键词
contraction; AA5182; solidification; computer simulation; butt-curl; hot cracking;

Thermal Contraction of AA5182 for Prediction of Ingot Distortions

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