METHOD OF CONTROLLING PHASE HARDENING IN TITANIUM NICKELIDE-BASED ALLOYS Russian patent published in 2024 - IPC C22F1/10 G01N3/18 G01N25/02 

FIELD: measuring.

SUBSTANCE: invention relates to a method for controlling reactive stresses generated in titanium nickelide during a cycle of thermoelastic martensitic transformations under conditions of fixed martensitic deformation accumulated during direct transformation during cooling under load in the temperature range containing the range of reversible thermoelastic martensitic transformations, which determine the shape memory effect and superelasticity, and can be used to control the structural state and elastic moduli of this material. Performing a series of cycles of direct and reverse transformations in a temperature range containing an interval of thermoelastic martensitic transformations under conditions of fixed martensite deformation accumulated in a half-cycle of cooling under alloy load, reactive stresses are recorded, then the value of saturation with reactive stresses and the value of phase hardening is determined, which is equal to the difference between the maximum value of reactive stresses in the series of cycles and the yield point of the given alloy.

EFFECT: possibility of controlling phase hardening in cycles of thermoelastic martensitic transformations and measuring the value of phase hardening in alloys based on titanium nickelide at fixation of reactive stresses.

1 cl, 5 tbl, 4 dwg