Severe electroplastic deformation of TiNi alloy

Abstract

Opportunity of electropulse impact application to increase deformability of the hard deformed alloy during severe plastic deformation is examined. For the first time display of electroplastic effect (EPE) in coarse-grained TiNi alloy with shape memory effect is investigated. It is shown that EPD by cold rolling significantly increases total and single strain to failure. The formation of amorphous, nanocrystalline and UFG structures by EPD depends on the pulse current density that is critical parameter of the new method.