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

Journal Article · Tue Jun 01 04:00:00 EDT 1993 · Journal of Materials Research; (United States)

DOI:https://doi.org/10.1557/JMR.1993.1203· OSTI ID:6328147

Baker, I ^[1]

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1. Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire 03755-8000 (United States)

Geometrical modeling of the B2 structure indicates that the tetrahedral interstitial site is always the largest both before and after an [ital a]/2[l angle]111[r angle]translation on [l brace]110[r brace], such as occurs during the slip of a partial dislocation in some B2 compounds. The tetrahedral site within the APB which trails a gliding [ital a]/2[l angle]111[r angle] 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.

• DOE Contract Number: FG02-87ER45311
• OSTI ID: 6328147
• Journal Information: Journal of Materials Research; (United States), Journal Name: Journal of Materials Research; (United States) Vol. 8:6; ISSN JMREEE; ISSN 0884-2914
• Country of Publication: United States
• Language: English

Related Subjects

665000* -- Physics of Condensed Matter-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BCC LATTICES
CRYSTAL DEFECTS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CUBIC LATTICES
DISLOCATIONS
HARD-SPHERE MODEL
INTERSTITIALS
LINE DEFECTS
POINT DEFECTS
SLIP