对流和弥散相液滴运动对偏晶合金凝固的影响.pdf

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12 1435—1440 ACTA METALLURGICA SINICA Dec. 2009 –1440
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A 0412 1961(2009)12 1435 06
EFFECTS OF CONVECTIONS AND MOTIONS OF MINOR-
ITY PHASE DROPLETS ON SOLIDIFICATION OF
MONOTECTIC ALLOYS
ZHAO Jiuzhou, LI Haili, ZHAO Lei
Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016
Correspondent: ZHAO Jiuzhou, professor, Tel: (024)23971918, E-mail: ******@imr.
Supported by National Natural Science Foundation of China (, 50771097 and 50671111)
Manuscript received 2009–04–23, in revised form 2009–08–14
ABSTRACT Many alloys show a phase diagram characterized by the appearance of a miscibility
gap in the liquid state. Some of them have great potentials to be used in industry. But when a
homogeneous, single–phase liquid is cooled into the miscibility gap, ponents are no longer
miscible and two liquid phases develop. Generally the liquid–liquid position causes the formation