ABSTRACT
Rapid solidification is quite an effective way of enhancing the strength properties of metals
and it was also applied to M g alloys including those with various rare earth metals
[241-247, 378-380] . The high strength properties of the metal materials after rapid solidi-
fication are caused by peculiarities of their structure. One of them is the very fine structure
constituents such as grains of metal-base solid solution and particles of the second phases
containing alloying elements. A t the highest solidification rates it is possible to obtain
alloys in amorphous or glassy state. A s a rule, sufficiently rapid solidification is achieved
by cooling materials in thin sections. One of the widespread processes for this is cooling of
melts on a fast rotating disk which is called "spinning". Therefore, alloys with substantially
fine structure are commonly obtained in the form of thin ribbons, thin flat pieces or wires.
