EXPERIMENTAL　RESEARCH　ON　DIRECTIONAL　SOLIDIFICATION　OF　Al－4．5wt％Cu　ALLOY　BY　ACRT　METHOD

作     者：JIE Wanqi(State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi’an 710072,China) 

作者机构：Northwestern Polytechnical Univ Xi'an China 

出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)

年 卷 期：1996年第9卷第1期

页      面：17-22页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：accelerated crucible rotation technique(ACRT) Al-4.5wt%Cu directional solidification morphology of L/S interface cell spacing 

摘      要：Accelerated crucible rotation technique(ACRT) has been used for the directional solidification of Al-4.5wt% Cu binary *** rotating the crucible at varying rate and direction,forced liquid flows are aroused These flows include Ekman flow,Couette flow and Spiral Shear ***,Ekman flow acts directly at the L/S interface,changes diffusion and heat exchange conditions and has strong influences on the morphology of L/S *** results show that,compared with normal Bridgman specimens,the solidification region is much narrower and the cell spacing is much smaller in ACRT *** influences become much stronger when the accelerating rate is increased.