Studies of Nanovoids in Quenched Aluminum Using SAXS Techniques | Quantitative Characterization and Aging Studies

Arnab Chaudhuri

ISBN 10: 3659186856 / ISBN 13: 9783659186851

Edité par LAP LAMBERT Academic Publishing, 2012

Studies of Nanovoids in Quenched Aluminum Using SAXS Techniques | Quantitative Characterization and Aging Studies | Arnab Chaudhuri | Taschenbuch | 88 S. | Englisch | 2012 | LAP LAMBERT Academic Publishing | EAN 9783659186851 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu. N° de réf. du vendeur 106376051

Synopsis :

A small angle X-ray scattering (SAXS) study of quenched-in nanovoids in 99.988 and 99.995 at.% aluminum (Al) is presented. Nanovoids are agglomerations of point defects in the metallic host. SAXS is a non-destructive, dynamic probe which is ideally suited to characterize nanoscale electron density inhomogeneities, e.g., electron density difference between void and metal matrix. Previous SAXS studies of nanovoid structures in metals were limited by the presence of multiple scattering from the metal matrix. In this study, meticulous material processing methods were applied to induce a significant nanovoid concentration in nominally pure Al while minimizing the introduction of multiple scattering artifacts through sample deformation. Absolute intensity calibration with a secondary glassy carbon standard was performed. SAXS analyses were used to estimate void size, void-metal interface structure, void number distribution and void volume fraction in quenched aluminum samples. Also, preliminary aging studies of nanovoids in Al revealed some interesting trends in the kinetic properties of the nanovoids. These information has the potential to be used to develop novel aluminum alloy alloys.

Présentation de l'éditeur: A small angle X-ray scattering (SAXS) study of quenched-in nanovoids in 99.988 and 99.995 at.% aluminum (Al) is presented. Nanovoids are agglomerations of point defects in the metallic host. SAXS is a non-destructive, dynamic probe which is ideally suited to characterize nanoscale electron density inhomogeneities, e.g., electron density difference between void and metal matrix. Previous SAXS studies of nanovoid structures in metals were limited by the presence of multiple scattering from the metal matrix. In this study, meticulous material processing methods were applied to induce a significant nanovoid concentration in nominally pure Al while minimizing the introduction of multiple scattering artifacts through sample deformation. Absolute intensity calibration with a secondary glassy carbon standard was performed. SAXS analyses were used to estimate void size, void-metal interface structure, void number distribution and void volume fraction in quenched aluminum samples. Also, preliminary aging studies of nanovoids in Al revealed some interesting trends in the kinetic properties of the nanovoids. These information has the potential to be used to develop novel aluminum alloy alloys.

Détails bibliographiques

Titre : Studies of Nanovoids in Quenched Aluminum ...
Éditeur : LAP LAMBERT Academic Publishing
Date d'édition : 2012
Reliure : Taschenbuch
Etat : Neu