Semisolid microstructure evolution of AZ91D alloy under high shear rate

作     者：ZHU Guanglei XU Jun ZHANG Zhifeng LIU Guojun 

作者机构：National Engineering ＆ Technology Research Center for Nonferrous Metal Matrix CompositesGeneral Research Institute for Nonferrous MetalsBeijing 100088China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2011年第30卷第1期

页      面：99-103页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：supported by the National High-Tech Research and Development Program of China (No.2009AA03Z534) the National Basic Research Program of China (No. 2006CB605203) the International Cooperation in Technical Research and Development Program of China (No.2009DFB50210) 

主　　题：magnesium alloys microstructural evolution shearing grain refinement solidification 

摘      要：Experimental work was undertaken to investigate the effect of rotation speed on the solidification microstructure of AZ91D alloy using a twin-screw slurry *** numerical simulation was used to investigate the effect of rotation speed on the flow filed and temperature field of the *** was found that increasing the rotation speed could give rise to substantial grain refinement,which can be attributed to the increase of effective nucleation rate caused by the extremely uniform temperature and dispersing any potential clusters of nucleation agents in the bulk liquid under dispersive mixing.