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Hard sphere modeling of the effect of slip on interstitial sites in the B2 structure

Published online by Cambridge University Press:  31 January 2011

I. Baker
I. Baker
Affiliation:
Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire 03755-8000
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Abstract

Geometrical modeling of the B2 structure indicates that the tetrahedral interstitial site is always the largest both before and after an a/2〈111〉 translation on {110}, such as occurs during the slip of a partial dislocation in some B2 compounds. The tetrahedral site within the APB which trails a gliding a/2〈111〉 dislocation is larger than in the unslipped lattice, suggesting that interstitial atoms will segregate there. Also, some interstitial sites in a B2 lattice are larger than those in a bcc lattice of the same lattice parameter, suggesting that interstitials may have greater solubility in B2 compounds.

Type
Rapid Communications
Information
Journal of Materials Research , Volume 8 , Issue 6 , June 1993 , pp. 1203 - 1205
Copyright
Copyright © Materials Research Society 1993

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References

1Baker, I. and Munroe, P.R., in High Temperature Aluminides and Intermetallics, edited by Whang, S.H., Liu, C.T., Pope, D.P., and Stiegler, J. O. (TMS, Warrendale, PA, 1990), p. 425.Google Scholar