| A simulation study of rapid solidification and crystal configuration of Cu_(70)Ni_(30) alloy |
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| 作者姓名： | ZHENG Caixing LIU Rangsu ZHOU Qunyi TIAN Ze’an WANG Xin & LI Qiang |
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| 作者单位： | ZHENG Caixing，LIU Rangsu，ZHOU Qunyi，TIAN Ze’an，WANG Xin & LI Qiang Department of Physics，Hunan University，Changsha 410082，China |
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| 摘 要： | 1 Introduction It is well known that the performances of metal materials are mainly determined by their special microcosmic configuration formed in the concreting processes. For under- standing the relationship between the configuration and performance, it is very impor- tant both in theory and practice to find out the form and transition feature of microcos- mic configuration by tracking the concreting processes of liquid metals. Cu-Ni alloy is a completely solid solution or a single-phase al…
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A simulation study of rapid solidification and crystal configuration of Cu70Ni30 alloy |
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| ZHENG Caixing,LIU Rangsu,ZHOU Qunyi,TIAN Ze'an,WANG Xin,LI Qiang.A simulation study of rapid solidification and crystal configuration of Cu_(70)Ni_(30) alloy[J].Science in China(Physics Astronomy),2005,48(6). |
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| Authors: | ZHENG Caixing LIU Rangsu ZHOU Qunyi TIAN Ze'an WANG Xin LI Qiang |
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| Abstract: | A molecular dynamics (MD) simulation study has been performed for the rapid solidification of Cu70Ni30 adopting the quantum Sutton-Chen many-body potentials. By analyzing the bond-types and the relation of atomic average energy versus temperature, it was demonstrated that as cooling rate being 2 × 1012 K/s, the Cu70Ni30 formed fcc crystal structures and freezing point was found. In addition, having analyzed the transformation of microstructures and the detail of crystal growth by using atomic trace and visual method, not only could the formation of binary disordered solid solution be showed, but also the solidification of liquid metals and the crystal growth processes could be further understood. |
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| Keywords: | quantum Sutton-Chen potentials molecular dynamics simulation Cu70Ni30 alloy rapid solidifica- tion |
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