ON A CLASS OF THERMO-MECHANICAL PROCESSES DURING RAPID PLASTIC DEFORMATION (WITH SPECIAL REFERENCE TO METAL CUTTING).

The phenomenon of conversion of mechanical work into heating during plastic deformation and the resulting effect of heat production on the mechanical properties of the deforming material is considered. In particular, a peculiar process called ″adiabatic shear deformation″ is illustrated; this process is frequently thought to be responsible for the narrow deformation zones in many rapid metal working operations. A simplified analysis of the deformation process taking place in these narrow shear zones is presented.