Numéro
J. Phys. Colloques
Volume 48, Numéro C3, Septembre 1987
4th International Aluminium Lithium Conference
Page(s) C3-425 - C3-431
DOI https://doi.org/10.1051/jphyscol:1987348
4th International Aluminium Lithium Conference

J. Phys. Colloques 48 (1987) C3-425-C3-431

DOI: 10.1051/jphyscol:1987348

THE EFFECT OF FTMT ON THE GRAIN BOUNDARY MICROSTRUCTURE OF ALUMINIUM-LITHIUM-COPPER-MAGNESIUM-ZIRCONIUM ALLOYS

J. WHITE et W.S. MILLER

Alcan International Ltd, Southam Road, Banbury, GB-Oxon, OX16 7SP, Great-Britain


Abstract
This study explores the effect of solution heat treatment, deformation prior to ageing and ageing temperature on the grain boundary microstructure of Al-Li alloys. Emphasis is placed on 8090 but comparison is made with other alloy systems where appropriate. It is concluded that all three variables affect grain boundary precipitation and that the latter two can be used to refine the grain boundary microstructure.