Statistical analysis of composition fluctuations and short-range order in stoichiometric Ni-Cr-Mo alloys.
Ultramicroscopy
; 132: 227-32, 2013 Sep.
Article
em En
| MEDLINE
| ID: mdl-23588067
In the solution treated state Ni-Cr-Mo based alloys exhibit short-range order characterized by the appearance of diffuse intensity spots in electron diffraction patterns at {1 ½ 0} positions. This short-range order appears due to of the formation of chemical heterogeneities. In the present work we report on the investigation of short-range order in Ni-33 at% Cr and Ni-16.7 at% Cr-16.7 at% Mo alloys using transmission electron microscopy. Chemical heterogeneities and their sizes are analyzed by statistical methods applied to three-dimensional atom probe data obtained on the same alloys. The obtained chemical heterogeneities are correlated to regions of short-range order in Ni-33 at% Cr and Ni-16.7 at% Cr-16.7 at% Mo alloys.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Ultramicroscopy
Ano de publicação:
2013
Tipo de documento:
Article