Formation and Magic Number Characteristic of Clusters during Rapid Solidification of Mg2Ca

2014 ◽  
Vol 997 ◽  
pp. 438-441 ◽  
Author(s):  
Li Li Zhou ◽  
Chong Xing ◽  
You Lin Peng
Keyword(s):  
Molecular Dynamics ◽  
Glass Transition ◽  
Molecular Dynamics Simulation ◽  
Size Distribution ◽  
Rapid Solidification ◽  
Simulation Study ◽  
Magic Number ◽  
Dynamics Simulation ◽  
Number Sequence ◽  
Icosahedral Cluster

A molecular dynamics simulation study has been performed for a system consisting of 15,000 atoms to investigate the formation and magic number characteristics of various clusters formed during the rapid solidification. Results indicate that the icosahedral cluster (12 0 12 0) plays key role in the glass transition. The size distribution of clusters in the system showing magic number characteristics, and the magic number sequence in the Mg2Ca system is 13, 19, 25, 36, 37, ....This magic number sequence is quite similar with that of the system of metal Al.

Microstructure Transition during Rapid Solidification of Liquid Metal Zn

2014 ◽  
Vol 997 ◽  
pp. 574-577
Author(s):  
You Lin Peng ◽  
Li Li Zhou ◽  
Lan Zhen Chen
Keyword(s):  
Crystal Structure ◽  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Liquid Metal ◽  
Cooling Rate ◽  
Rapid Solidification ◽  
Simulation Study ◽  
Dynamics Simulation

A molecular dynamics simulation study has been performed for a system consisting of 10,000 atoms to investigate the microstructure evolutions during the rapid solidification. Results indicate that the crystallization has not enough time to complete due to the high cooling rate; therefore, a part of crystal structure is formed, in which the hcp and fcc basic clusters and some other metallic type clusters coexist in the final solidified structure.

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