Research works concerning making an alloying addition of scandium to alumin
ium alloys are carried out for nearly 30 years in Russia. As a result of th
ese studies, main regularities characterising the effect of scandium on a s
tructure and properties of aluminium alloys have been found and, based on t
his, principles of making an alloying addition of scandium to aluminium all
oys and foundations of a technology for production of wrought semiproducts
have been formulated. (C) 2000 Elsevier Science S.A. All rights reserved.