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Statics and Dynamics of Grain Boundaries in Ni3Al

Published online by Cambridge University Press:  26 February 2011

Diana Farkas
Diana Farkas*
Affiliation:
Department of Materials Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061
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Abstract

Various modeling techniques have been used to study the structure of grain boundaries in ordered compounds, particularly Ni3Al. The techniques include computer simulation, group theoretical analysis and the cluster variation method for high temperature effects. A multiplicity of possible grain boundary structures was analyzed for different misorientations and grain boundary plane location. 1The influence of several alloy properties like atomic size differences and deviation from stochiometry on the occurrence of these different structures is analyzed. The implications of these results for grain boundary misorientation distribution, grain boundary plane location and faceting behavior are discussed and compared to experimental findings. The possibility of orderdisorder transitions in the grain boundary region is also discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 133: Symposium H – High-Temperature Ordered Intermetallic Alloys III , 1988 , 137
Copyright
Copyright © Materials Research Society 1989

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