Skip to Main content Skip to Navigation
Journal articles

Evolution of alloying elements during outgassing in an aluminium zinc magnesium alloy made by powder metallurgy

Abstract : To obtain high-quality produces from aluminium alloys powders, degassing is usually carried out before consolidation. But, in the case of Al-Zn-Mg alloys an evaporation of alloying elements may occur during outgassing. The aim of this work was to determine the influence of degassing conditions (temperature, pressure, nature of the gaseous atmosphere) on the stability of the alloy composition. These studies were performed on X7091 alloy by means of thermogravimetry and temperature-programmed desorption technique. The results show that liberation of alloying elements is closely connected with the evolution of the surface oxide layer which itself depends on various thermodynamic and kinetic parameters. The role of water vapour in the gaseous environment was particularly emphasized.
Document type :
Journal articles
Complete list of metadatas

https://hal-emse.ccsd.cnrs.fr/emse-00435891
Contributor : Andrée-Aimée Toucas <>
Submitted on : Wednesday, November 25, 2009 - 11:25:19 AM
Last modification on : Wednesday, June 24, 2020 - 4:18:18 PM

Links full text

Identifiers

Citation

Véronique Chiavazza, Christophe Pijolat, René Lalauze. Evolution of alloying elements during outgassing in an aluminium zinc magnesium alloy made by powder metallurgy. Journal of Materials Science, Springer Verlag, 1988, 23 (8), pp.2960-2964. ⟨10.1007/BF00547475⟩. ⟨emse-00435891⟩

Share

Metrics

Record views

183