Mechanism of Gravity Effect on Solidification Microstructure of Eutectic Alloy
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2014年第5期
论文作者：Nannan Zhang Xinghong Luo Shaobo Feng Yuhu Ren
文章页码：499 - 503
摘 要：The influence of gravity on the solidification microstructure of Al-AI3Ni eutectic alloy was investigated by using a 50-m-long drop tube.It was found that at different growth rates the average inter-rod spacing was always larger under microgravity（μg）than those under normal gravity（1g）.Moreover,with increasing growth rate,the spacing difference between 1 g samples andμg samples reduced progressively.Based on the experimental results and analysis,a physical model was proposed to describe the effect of gravity on the solidification process of eutectic alloy.
Nannan Zhang，Xinghong Luo，Shaobo Feng，Yuhu Ren
Institute of Metal Research,Chinese Academy of Sciences
摘 要：The influence of gravity on the solidification microstructure of Al-AI3Ni eutectic alloy was investigated by using a 50-m-long drop tube.It was found that at different growth rates the average inter-rod spacing was always larger under microgravity（μg）than those under normal gravity（1g）.Moreover,with increasing growth rate,the spacing difference between 1 g samples andμg samples reduced progressively.Based on the experimental results and analysis,a physical model was proposed to describe the effect of gravity on the solidification process of eutectic alloy.
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