are stressed in the macroelastic region. It is established that the generation of acoustic emission at stresses close
to the yield limit depends on the carbon content of the steel and the progress of carbide formation (the tempering
temperature). In addition to the carbide phase, the generation of acoustic emission calls for the presence of
mobile dislocations which are formed in the course of the
–
transformation at quenching. It is hypothesized that a certain contribution to the generation of acoustic emission in the case of tensile deformation comes from
the processes of microcracking associated with the carbide phase, which are nonexistent in the case of compres-
sive deformation.