Functional properties of bimetal composite of “stainless steel–TiNi alloy” produced by explosion welding

The functional properties of “TiNi–stainless steel” bimetal composite produced by explosion welding were studied. The influence of the ratio of the TiNi layer thickness to the total thickness of the sample as well as the influence of preliminary deformation on the recoverable strain and a temperature of shape memory effect were studied. It was found that the best combination of strain variation observed in repeated thermal cycles was demonstrated by the bimetal sample in which the thickness of the TiNi layer was 64% of the thickness of the sample. The preliminary deformation resulted in an increase in stress stored in the sample and led to an increase in recoverable strain.