EXPERIMENTAL-DETERMINATION OF GENERALIZED THERMOMECHANICAL DIAGRAMS FOR SHAPE-MEMORY ALLOYS IN AXISYMMETRICAL BENDING

A method is proposed for experimental determination of the generalized thermomechanical diagram for shape memory alloys with the use of flat 0-ring specimens subjected to axisymmetric bending to a specified amo unt of deformation. Peculiarities of the mathematical processing of ex perimental results in constructing a linear dependence of reactive rec overy stresses on the amount of the underrestored deformation with an absolutely rigid counteraction are considered. An analysis has been ca rried out for the thermomerhanical diagrams of TN1K alloy predefomed i n tension, compression, and plane and axisymmetric bending.