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Shape-memory properties of equiatomic NiTi, Ni 45 Ti 50 Cu 5 , and Ni 25 Ti 50 Cu 25 ribbons made by melt spinning have been studied by temperature inducing the martensitic transformation under constant tensile loads. Recoverable strains above 4 pct can be obtained under ϳ100 MPa loads for the NiTi and Ni 45 Ti 50 Cu 5 ribbons, transforming to B19Ј martensite. The B19 martensite is formed in the Ni 25 Ti 50 Cu 25 ribbon after crystallization, and according to the lowering in transformation strain as Cu content increases, the recoverable strain is close to 2.5 pct for ϳ150 MPa load. The transformation temperatures exhibit a linear dependence on the applied stress, which can be quantitatively described by means of a Clausius-Clapeyron type equation. The NiTi and Ni 45 Ti 50 Cu 5 ribbons exhibited some degree of two-way shape-memory effect (TWSME) after thermomechanical cycling. Texture analyses performed on the different ribbons allow us to better understand the transformation strains obtained in each ribbon. The amounts of shapememory effect (SME) and nonrecoverable strain shown by the studied ribbons are of the same order as those already observed in bulk materials, which makes melt spinning an ideal substitute to complicated manufacturing processes if really thin samples are needed. However, applicable stresses in melt-spun ribbons are limited by a relatively "premature" brittle fracture caused by irregularities in ribbon thickness.