SUPRAPLASTIC DEFORMATION OF ALUMINUM-LITHITHIUM ALLOYS 1450 AND 1460, ALLOYED WITH ZIRCONIUM AND SCANDIUM

The article presents the results of research directed to the determination of mechanisms of an ultrafine-grained structure formation in aluminum-lithium alloys 1450 and 1460, which include dispersed particles of zirconium and scandium aluminides, which are effective stabilizers of the microstructure, as well as for the determination of the features of structural changes during the course supraplastic deformation.