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The Effect of Temperature on the Structure of Grain Boundaries in Ni3Al with and Without Boron

Published online by Cambridge University Press:  01 January 1992

Dongliang Lin (T. L. Lin) ,
Jian Sun ,
Da Chen  and
Min Lu
Dongliang Lin (T. L. Lin)
Affiliation:
Department of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200030, P. R. China
Jian Sun
Affiliation:
Department of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200030, P. R. China
Da Chen
Affiliation:
Department of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200030, P. R. China
Min Lu
Affiliation:
Department of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200030, P. R. China
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Abstract

Monte Carlo computer simulations with embedded atom method potentials are used to study the structure and energy of symmetric tilt grain boundaries in Ni3Al at high temperatures and compared with those at absolute zero, which is conducted with static relaxation method. The effect of stoichiometry and boron addition on the structure and energy of grain boundary are also investigated. The simulation results show that there exists more compositional disorder at grain boundaries than in the bulk in non-stoichiometric Ni3Al with and without boron. At absolute zero the grain boundary consists of periodically distributed structural units which are distorted with the increasing temperature. The effect of temperature on the structure and energy of grain boundaries in Ni3Al with and without boron was discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 288: Symposium L – High-Temperature Ordered Intermetallic Alloys V , 1992 , 197
Copyright
Copyright © Materials Research Society 1995

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References

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