PROPERTIES OF TILT GRAIN-BOUNDARIES IN ORDERED ALLOYS

Authors
STAROSTENKOV MD DEMYANOV BF GRAKHOV EL KUSTOV SL SVERDLOVA EG
Citation
Md. Starostenkov et al., PROPERTIES OF TILT GRAIN-BOUNDARIES IN ORDERED ALLOYS, Nanostructured materials, 10(3), 1998, pp. 485-492
Citations number
7
Categorie Soggetti
Material Science
Journal title
Nanostructured materials → ACNP
ISSN journal
09659773
Volume
10
Issue
3
Year of publication
1998
Pages
485 - 492
Database
ISI
SICI code
0965-9773(1998)10:3<485:POTGIO>2.0.ZU;2-2
Abstract
Computer simulation of symmetric tilt grain boundaries (GB) Sigma=5 [1 00] (012) in ordered alloys Ni3Al and NiAl was carried out. The energy of GB ws calculated by a method construction of gamma-surface constru ction using Morse's empirical central force potentials. Results show G B having several steady states: (i) one is stable; or (i) metastable. These states differ by energy and atomic structure of GB. Transition o f GB from one state to the other is investigated and Burgers vector of GB dislocations are determined. It is shown that a direction fo GB sl ip in both alloys is [100]. (C)1998 Acta Metallurgica Inc.