METHOD OF COMBINED INTENSE PLASTIC DEFORMATION OF WORKPIECES

摘要

FIELD: metallurgy.SUBSTANCE: equichannel angular pressing of a cylindrical workpiece is performed. Ultra-fine structure with the grain size of 200-300 mcm is formed in the workpiece metal. Then the workpiece is cut into disks with each of them being subject to intensive plastic deformation by torsion with the help of two rotating strikers. Deformation of torsion is carried out under the room temperature and the pressure of 4-6 GPa with the number of strikers' revolutions n?2. Therewith the homogeneous nanocrystalline structure with the grain size of ?100 mcm is formed.EFFECT: improved physical and mechanical properties of the material being processed.2 cl, 1 tbl, 1 ex