During superplastic deformation (SPD) of steel R6M by tension, up setting, and direct extrusion a more dispersed structure develops as a result of refinement and spheroidizing of the carbide phases and an increase in the uniformity of their distribution. This effect occurs to a greater extent during tension loading.

Superplastic deformation of R6M5 and 10R6M5-MP high-speed steels leads to improvement in their structure including an increase in the degree of dispersion and equiaxiality of the carbide phase and in the alloy content of the solid solution.

Superplastic deformation improves the uniformity of distribution of W, V, Mo, and Cr in the high speed steels R6M5 and 10R6M5-MP.

With different arrangements of straining high-speed steels as supplied, the effect of superplasticity manifests itself steadily.