(沈陽工業(yè)大學 材料科學與工程學院， 沈陽 110023)
摘 要: 離心鑄造Al-Fe合金凝固過程中的先析出相與合金液之間具有較大的密度差，在離心力場作用下，先析出相將沿徑向由內向外遷移，致使初生相沿鑄件徑向呈梯度分布。根據(jù)離心鑄造Al-Fe合金凝固過程中固相遷移運動的特點，建立了描述這一運動過程的數(shù)學模型，并時刻固相遷移運動速度的分布情況，揭示了離心鑄造Al-Fe合金凝固過程中的固相遷移運動規(guī)律。
關鍵字: 離心鑄造； Al--Fe合金； 固相遷移
（School of Materials Science and Engineering,
Shenyang University of Technology, Shenyang 110023, P.R.China）
Abstract:During the solidification process of AlFe alloy under centrifugal casting, the primary phase migrates along the radius because of the density difference between the primary phase and the liquid alloy. Therefore the distribution of the primary phase is in gradient along the radius of the casting. A mathematical model was put forward according to the characteristics of the solid phase migration during the solidification process of Al-Fe alloy under centrifugal casting. The distribution of solid phase migration velocity at every moment in the solidification process was worked out with a numerical method through calculating the average velocity. Thus the law of solid phase migration in the solidification process of Al-Fe alloy under centrifugal casting was demonstrated.
Key words: centrifugal casting； Al-Fe alloy； migration of solid phases
