Order-disorder Transition Behaviors of Non-stoichiometrical Ni<sub>3</sub>Al

Ni Xiaodong; Wang Xitao; Chen Guoliang

doi:10.13374/j.issn1001-053x.1997.01.008

Volume 19 Issue 1

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Ni Xiaodong, Wang Xitao, Chen Guoliang. Order-disorder Transition Behaviors of Non-stoichiometrical Ni3Al[J]. Chinese Journal of Engineering, 1997, 19(1): 43-46. doi: 10.13374/j.issn1001-053x.1997.01.008

Citation:

Ni Xiaodong, Wang Xitao, Chen Guoliang. Order-disorder Transition Behaviors of Non-stoichiometrical Ni₃Al[J]. Chinese Journal of Engineering, 1997, 19(1): 43-46. doi: 10.13374/j.issn1001-053x.1997.01.008

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Order-disorder Transition Behaviors of Non-stoichiometrical Ni₃Al

doi: 10.13374/j.issn1001-053x.1997.01.008

State Key Laboratory for Advanced Metals and Materials, UST Beijing, Beijing 100083, China

Received Date: 1996-10-22
Available Online: 2021-08-27

Abstract

Abstract

The effective atom model based on EAM potential was applied to study the relationship between the structural stability and the long range order parameter of non-stoichiometrical Ni₃Al based alloys. The calculated results indicate that the order-disorder transition temperature (T_t) increases with Al composition increasing. The order-disorder transition process is a nucleation-propagation process. The microstructure of partially order state is a mixed microstructure with full disorder and full order domains. The calculated results are consistent with the experimental results.
- order-disorder transition,
- Ni-Al alloy,
- computer simulation,
- intermetallic compound