Solution softening in magnesium alloys: the effect of solid solutions on the dislocation core structure and nonbasal slip.
J Phys Condens Matter
; 25(2): 022202, 2013 Jan 16.
Article
en En
| MEDLINE
| ID: mdl-23220883
ABSTRACT
There is a pressing need to improve the ductility of magnesium alloys so that they can be applied as lightweight structural materials. In this study, a mechanism for enhancing the ductility of magnesium alloys has been pursued using the atomistic method. The generalized stacking fault (GSF) energies for basal and prismatic planes in magnesium were calculated by using density functional theory, and the effect of the GSF energy on the dislocation core structures was examined using a semidiscrete variational Peierls-Nabarro model. Yttrium was found to have an anomalous influence on the solution softening owing to a reduction in the GSF energy gradient.
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Modelos Moleculares
/
Aleaciones
/
Magnesio
/
Modelos Químicos
Idioma:
En
Revista:
J Phys Condens Matter
Asunto de la revista:
BIOFISICA
Año:
2013
Tipo del documento:
Article