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The development of microstructure of Ni3Al during rapid cooling and heating

Published online by Cambridge University Press:  31 January 2011

Luhong Wang ,
Haozhe Liu ,
Kuiying Chen  and
Zhuangqi Hu
Luhong Wang
Affiliation:
State Key Lab of RSA, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, People's Republic of China
Haozhe Liu
Affiliation:
State Key Lab of RSA, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, People's Republic of China
Kuiying Chen
Affiliation:
State Key Lab of RSA, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, People's Republic of China
Zhuangqi Hu
Affiliation:
State Key Lab of RSA, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, People's Republic of China
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Abstract

The processes of rapid solidification from liquid to solid and heating from glass to crystalline for Ni3Al are simulated using molecular dynamics method. An amorphous state can be obtained by rapid solidification as long as the cooling rate is sufficiently large, which is very difficult to get in experiment. An fcc-type crystalline is obtained by heating the amorphous with a small heating rate. Based on the pair analysis technique, the microstructures of liquid, supercooled liquid, amorphous, and crystalline states of Ni3Al have been analyzed. Furthermore, the effects of cooling rate and heating rate on microstructures of Ni3Al during rapid solidification and heating processes have been discussed.

Type
Articles
Information
Journal of Materials Research , Volume 13 , Issue 6 , June 1998 , pp. 1497 - 1501
Copyright
Copyright © Materials Research Society 1998

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