The improved plasticity of NiTi alloy via electropulsing in rolling

Abstract

NiTi alloys were cold-rolled and electroplastic-rolled (EP-rolled) respectively, and the effect of rolling parameters on working plasticity was studied. NiTi alloy is easy to be embrittled and cracked in cold rolling, and the number of edge cracks is increased with higher thickness reduction. Electropulsing can enhance the ductility of NiTi alloy in rolling. In rolling, the resistance of deformation can be decreased, and deformation degree at the same roll gap increases because NiTi alloy develops recrystallisation and the hardness is decreased.

GRAPHICAL ABSTRACT

Keywords:

• NiTi alloy
• Cold rolling
• Electroplastic rolling
• Recrystallisation
• Plasticity