抄録
The gamma fiber texture of Nickel-Titanium shape memory alloy cold-drawn wire was measured by XRD and EBSD. The latter method determined the crystallographic orientations of grains over 600, each of which axis was plotted on a standard stereographic triangle. Calculated transformation strains along the wire axis in each gain due to the formation of the Bain correspondent variant (BCV) and variant pair were compared with the superelastic strain observed in experiment. It is concluded that the texture determines the extent of strain showing shape memory effect and superelasticity of this alloy polycrystal.
