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《Materials Review》 2011-04
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Investigation on Microstructures of Rapidly Solidified Mg-6Zn-5Ce Alloy

ZHOU Tao1,XIA Hua1,ZHOU Zhiming1,PENG Chengyun1,CHEN Kang1KU Meifang1,CHEN Zhenhua2(1 College of Materials Science and Engineering,Chongqing University of Technology,Chongqing 400054;2 College of Material Science and Engineering,Hunan University,Changsha 410082)  
The atomization-twin rolls quenching technology has been utilized to successfully prepare the rapidly solidified Mg-6Zn-5Ce alloys in the form of flakes.The microstructures,phase compositions and thermal stability of the rapidly solidified alloy have been investigated by TEM,XRD and DSC,respectively.The results indicate that the alloy is characteristic of fine microstructures and the grain size is about 5μm.Moreover,a large number of dispersed precipitates are mostly near spherical in shape.Through the EDS analysis,the precipitates are MgxZnyCez phases(atomic ratio of Zn/Ce is 2∶1) with high melting points.
【Fund】: 重庆市科委自然科学基金计划资助项目(CSTC 2010BB4307);; 重庆理工大学基金项目(2009ZD26);重庆理工大学青年基金计划资助项目(2010ZQ30)
【CateGory Index】: TG146.22
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