Title of article
Dislocations in materials with mixed covalent and metallic bonding
Author/Authors
Nguyen-Manh، نويسنده , , D. and Cawkwell، نويسنده , , M.J. and Grِger، نويسنده , , R. and Mrovec، نويسنده , , M. and Porizek، نويسنده , , R. and Pettifor، نويسنده , , D.G. and Vitek، نويسنده , , V.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2005
Pages
4
From page
68
To page
71
Abstract
Environment-dependent bond-order potentials have been developed for L10 TiAl, bcc Mo and fcc Ir. They comprise both the angular character of bonding and the screening effect of nearly free electrons. These potentials have been employed in atomistic studies of screw dislocations that revealed the non-planar character of their cores. It is argued that both covalent as well as metallic character of bonding govern these structures, which in turn control the mechanical behaviour.
Keywords
?-Surface energies , Core structure , Tight-binding scheme , Bond-order potentials , Screw dislocation , Non-planar spreading , Environmental dependence
Journal title
MATERIALS SCIENCE & ENGINEERING: A
Serial Year
2005
Journal title
MATERIALS SCIENCE & ENGINEERING: A
Record number
2147130
Link To Document